Entries |
Document | Title | Date |
20080200290 | Bicycle freecoaster hub - The present invention refers to a bicycle hub being part of the drive mechanism | 08-21-2008 |
20080274845 | FRONT DERAILLEUR FOR A BICYCLE - A derailleur including an articulated quadrilateral mechanism, having four parallel articulation axes is provided. At a first articulation axis, between a fixed member and a first connecting rod, the fixed member includes a first forked structure embracing the first connecting rod. The first forked structure includes two opposite flanges having respective holes aligned along the first articulation axis, and the first connecting rod includes a hole aligned with the first articulation axis. A pin is inserted through the two holes of the first forked structure and the first connecting rod. The use of the fixed member creates a more favorable distribution of the stresses induced in the first connecting rod and the pin by the traction of the derailleur control cable. | 11-06-2008 |
20080300076 | BICYCLE FRONT DERAILLEUR ASSEMBLY - A manually operated bicycle front derailleur assembly includes a linkage assembly, a lever member and a connecting link. The linkage assembly is supported to a fixing member and includes an inner link pivotally coupled to the fixing member at a first pivot point, an extension arm extending from proximate the first pivot point, an outer link pivotally coupled to the fixing member at a second pivot point, and a chain guide pivotally coupled to the inner and outer links to move between an inner shift position and an outer shift position. The lever member is pivotally supported relative to the fixing member and the bicycle frame spaced apart from the first and second pivot points. The connecting link operatively connects the lever member to the extension arm such that the linkage assembly moves in response to movement of the lever member. | 12-04-2008 |
20080305902 | BICYCLE FRONT DERAILLEUR - A bicycle front derailleur includes a chain guide that is provided with a pushing element that is movable relative to the chain guide to assist in shifting a bicycle chain from a smaller front sprocket to an adjacent larger sprocket. The chain guide is part of a movable member that is movably coupled to a base member via a linkage assembly. The pushing element is rotatably coupled to the chain guide portion and activated by a chain to move relative to the inner chain guide member from a first position with the pushing element at rest to a second position in response to activation by the chain. The contact surface moves laterally outwardly into the chain receiving slot toward the outer chain guide member as the pushing element moves from the first position to the second position. | 12-11-2008 |
20090054182 | BICYCLE COMPONENT WITH POSITION SENSING - A bicycle component is basically provided with a base member, a movable portion, a magnetic element and a position sensing device. The base member is configured to be attached to a bicycle. The movable portion is movably coupled to the base member, the movable portion including a plurality of predetermined operating positions. The magnetic element is attached to one of the base member and the movable portion. The position sensing device is attached to the other one of the base member and the movable portion. The position sensing device includes a sensor element being sensitive to a presence of a magnetic field to generate an analog signal, and an analog-to-digital conversion unit configured to convert the analog signal from the sensor element into a digital signal to identify one of the predetermined operating positions of the movable portion. | 02-26-2009 |
20090054183 | BICYCLE REAR DERAILLEUR WITH A MOTION RESISTING STRUCTURE - A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member. The chain guide is coupled for rotation around a rotational axis (X), and a biasing element biases the chain guide in a selected rotational direction. A resistance applying unit applies a resistance to rotational movement of the chain guide in a direction opposite the selected rotational direction, and an adjusting unit adjusts an amount of resistance applied by the resistance applying unit. | 02-26-2009 |
20090098963 | BICYCLE REAR DERAILLEUR - A bicycle rear derailleur is provided with a base member, a movable member, a moving mechanism and an angular adjustment arrangement. The base member includes a first support portion and a first axle with the first support portion being pivotally mounted on the first axle. The movable member includes a second support portion, a chain guide and a second axle with the chain guide being pivotally mounted on the second support portion by the second axle. The moving mechanism is coupled between the first and second support portions. The angular adjustment arrangement is operatively coupled to either electrically pivot the first support portion relative to the first axle, or electrically pivot the chain guide relative to the second support portion when the moving mechanism is moved to move the second support portion of the movable member relative to the first support portion of the base member. | 04-16-2009 |
20090111624 | FRONT SPEED CHANGE DEVICE - A front speed change device comprises a base, a first linking rod, a second linking rod and a chain guide unit. The body serves to fix the body to a seat tube. The first linking rod has one end pivoted to the base and another end thereof is pivoted to the chain guide unit. The second linking rod has one end pivoted to the base and another end thereof is pivoted to the chain guide unit. The chain guide unit includes an outer guide sheet and an inner guide sheet. Two ends of the outer guide sheet are connected to the two ends of the inner guide sheet. A receiving body is formed therebetween for receiving a chain; and the outer guide sheet is formed with a first end surface, a second end surface, a third end surface and a fouth end surface. | 04-30-2009 |
20090111625 | BICYCLE GEARSHIFT - The disclosed bicycle gearshift ( | 04-30-2009 |
20090124440 | Gear changing mechanism for chain drive - A gear changing mechanism is adapted to engage an endless chain in a chain drive. The mechanism includes a rotary shaft and a gear set located around the shaft. The gear set has a plurality of generally circular gears of different diameter adapted to mesh with the chain, and the gear set has a plurality of operating positions each corresponding to partial wrapping of the chain about a different one of the gears. Each gear is formed as a plurality of separate gear segments that align circumferentially to define the gear. The gear set also comprises a plurality of separately moveable supporting structures each of which has rigidly fixed thereto one gear segment from each of the gears. Mounting means are provided that mount each of the supporting structures to the shaft for rotation together with the shaft and for axial displacement along the shaft. Controls are provided that can axially displace the supporting structures in succession between one operating position and another as each of the supporting structures and the gear segments fixed thereto enter a zone of non-contact with the chain. During gear changes, the chain remains stationary and the gears are displaced relative to the chain. | 05-14-2009 |
20090197718 | BICYCLE REAR DERAILLEUR - A bicycle derailleur is basically provided with a base member, a linkage assembly movably coupled to the base member, a movable member movably coupled to the linkage assembly and a chain guide movably coupled to the movable member. The chain guide has a pair of cage plates, a first pulley rotatably supported between the cage plates and a second pulley rotatably supported between the cage plates. At least one of the cage plates includes a non-metallic cage body and at least one metallic insert. The metallic insert has an annular base part defining a pulley axle receiving bore supporting one of the pulley axles of the pulleys and a first fastening part having a plurality of projections extending radially outward from the first annular base part with the projections at least partially embedded in the non-metallic cage body. | 08-06-2009 |
20090275429 | BICYCLE REAR DERAILLEUR - A base member is provided for a bicycle rear derailleur that basically comprises a housing portion and a fixing bolt. The housing portion is provided with a blind bore. The fixing bolt has a first portion rotatably supported by the housing portion within the blind bore and a second portion projecting from the housing portion. The second portion has a thread formed thereon and a tool engagement structure to rotate the fixing bolt relative to the housing portion. | 11-05-2009 |
20090280938 | APPARATUS FOR POSITIONING A DERAILLEUR ON A BICYCLE FRAME - An apparatus for positioning a derailleur on a bicycle frame comprises a base member for the derailleur, wherein the base member includes a first portion structured to be attached to a bicycle frame; a second portion structured to be attached to the bicycle frame, wherein the second portion is located away from the first portion; and a third portion structured to support a linkage mechanism. The first portion, the second portion and the third portion are structured so that the linkage mechanism as a unit is prevented from rotating clockwise, when viewed along the rotational axis from a laterally outer side of the derailleur, when the first portion and the second portion are attached to the bicycle frame. | 11-12-2009 |
20100004079 | BICYCLE REAR DERAILLEUR - A bicycle component (e.g., a rear derailleur) is basically provided with a base member and an axle. The axle includes a base supporting part supporting the base member for pivoting about a center axis of the axle and a base attaching part projecting outwardly of the base member for fixedly attachment to a bicycle frame. The base supporting part and the base attaching part overlap to define a coupling interface in which either a fixing element is disposed between the coupling interface of the base supporting part and the base attaching part or one of the base supporting part and the base attaching part is deformed with an interference fit. The base supporting part is formed of a first material with a first specific gravity. The base attaching part is formed of a second material with a second specific gravity that is higher than the first specific gravity. | 01-07-2010 |
20100022335 | CHAIN GUIDER OF A FRONT DERAILLEUR - A chain guider of a front derailleur includes an inner plate having an inverted L-shaped connecting structure integrally extending therefrom and an outer plate mounted on the connecting structure. The inner plate is made of metal and the outer plate is made of carbon fiber. The connecting structure includes a top plate and a side plate. The side plate is adhered to the outer plate. | 01-28-2010 |
20100075788 | SIX LINK FRONT DERAILLEUR - A front derailleur for shifting a bicycle chain between chain rings of a bicycle crank set. The front derailleur may include an attachment mechanism for securing the derailleur to a bicycle frame member. The front derailleur may further include a chain guide for enclosing a bicycle chain and contacting the chain during shifting. The front derailleur may further include a six link movement mechanism adjustably affixed to the attachment mechanism and chain guide for selectively moving the chain guide and enclosed bicycle chain during shifting. | 03-25-2010 |
20100081527 | Bicycle Derailleur - A derailleur is configured to be mounted to a bicycle frame. The derailleur includes a clamp mountable to the bicycle frame. The clamp includes a first end having a threaded portion receiving a clamp fastener for tightening of the clamp about the bicycle frame. A base member is connected to the clamp and includes a bore receiving the clamp fastener. A chain guide receives and laterally displaces a chain. First and second link members pivotably connect the base member and the chain guide. One of the link members includes an opening aligned with the bore such that the clamp fastener passes through the opening and into the bore of the base member. | 04-01-2010 |
20100093472 | BICYCLE REAR DERAILLEUR - A bicycle rear derailleur is basically provided with a base member, a movable member and a moving mechanism. The movable member pivotally supports a chain guide. The moving mechanism is coupled between the base member and the movable member so that the movable member is movable relative to the base member. The chain guide includes a first guide plate, a second guide plate, a guide pulley rotatably disposed between the first and second guide plates and a tension pulley rotatably disposed between the first and second guide plates. The first and second guide plates are releasably coupled together by a tool-less connection. | 04-15-2010 |
20100184545 | BICYCLE DERAILLEUR - A bicycle derailleur is basically provided with a base member, a movable member, a coupling member and a cable actuation ratio control mechanism. The movable member supports a chain guide. The coupling member movably couples the movable member to the base member. The cable actuation ratio control mechanism includes first and second link members. The first link member has a pivoting portion, a cable connection portion and a second link coupling portion. The pivoting portion is pivotally mounted to one of the coupling member and the base member. The cable connection portion is located on one side of the pivoting portion, while the second link coupling portion is located on the other side of the pivoting portion. The second link member is coupled to the first link member at the second link coupling portion and pivotally mounted to one of the movable member and the coupling member. | 07-22-2010 |
20100234154 | APPARATUS FOR GUIDING A CHAIN - The invention relates to the guidance of chains on bicycles. In this context, a chain stay is provided on a rear section of a bicycle, which chain stay is set up by means of a receiving device in such a manner that a chain guide can be fixed firmly on the chain stay. Furthermore, the chain guide is designed in such a manner that with regard to the guidance of the chain, it is possible to respond to a lateral position change of the chain due to a derailleur gear in such a manner that the desired guidance of the chain is achieved in any lateral position of the chain. The chain is thus held in the desired position in any operating state. | 09-16-2010 |
20110028252 | UNIVERSAL SKIP-FREE DERAILLEUR - The invention is a universal front and rear derailleur configured to work with a variable mechanical transmission of the chain and sprocket type. A hollow axle is mounted adjacent to the sprockets. At least one radial arm serving as a chain lifter is rotatably mounted on the hollow axle in the chain-free sector of the sprockets. An operator controlled mechanism forces the lifter to move axially against a spring towards the sprockets. Upon contact, the sprockets entrain the lifter under the chain. The chain is lifted from the active sprocket and deposited onto another sprocket. Completing a full circle, the lifter is pushed back by the spring in its stowing position. | 02-03-2011 |
20110160013 | Rear Derailleur for Bicycle - A rear derailleur is used in connection with a bicycle and is adapted to enable a chain to selectively engage with a plurality of sprocket wheels mounted to the bicycle. The rear derailleur includes an adjustment mechanism including fixed angular limits and a rotating member connected to the fixed angular limits and being rotatable relative to the fixed angular limits in a predetermined angular distance. A link member is constrained to a maximum or minimum angular limit defined by stops on the rotating member, and the angular position of the rotation member is adjusted by one user-input. | 06-30-2011 |
20110183795 | BICYCLE STRUCTURE - A bicycle structure is provided with a crankset and a front derailleur. The crankset includes a plurality of chain rings, with a largest chain ring of the plurality of chain rings having a plurality of teeth with teeth bottoms interposed between adjacent ones of the teeth. The front derailleur includes a chain guide having a chain guide slot partially defined by a first chain engagement surface with a protruding part that protrudes outwardly from the first chain engagement surface into the chain guide slot. The protruding part is located away from the teeth bottoms of the largest chain ring in a radial outside direction of the largest chain ring by a prescribed distance in a range from eight millimeters to sixteen millimeters. | 07-28-2011 |
20110224035 | Derailleur for Bicycle - A derailleur is cooperable with a bicycle including a plurality of cogs mounted thereto and is variable in positions in response to changing the speed of the bicycle and is in a position corresponding to one cog for one bicycle speed. The derailleur includes a first knuckle, a second knuckle, and a link member interconnecting and timing the first and second knuckles. The link member has an inner housing portion and an outer housing portion. The derailleur further includes two adjustment members for limiting it to the minimum and maximum range of motion and for connecting the inner and outer housing portion together. | 09-15-2011 |
20110224036 | Axial Fixing Device With An Integrated End Plug - An axial fixing and closure member arrangement including an insert element for producing a rotatable, but axially fixed connection between the rotary axle of the chain guide of a rear gear change mechanism for bicycles and the related lower pivot head by means of a spring element, wherein additionally the insert element also has a sealing effect by providing an integrated closure member. | 09-15-2011 |
20110230287 | CHAIN LATERAL TRAVEL LIMITER - A lateral travel limiter for the chain of a chain drive assembly as commonly seen on multi-speed bicycles. The chain lateral travel limiter attached to a bicycle frame proximate to a front derailleur and the front chain rings, and is positioned with respect to the front derailleur and the front chain rings so that during a shifting event, and in the event that the front derailleur shifts the chain laterally from a first plane defined by an outer chain ring to second plane defined by an inner chain ring and the chain travels laterally beyond the second plane defined by the inner chain ring, the chain is caught against the chain lateral travel limiter and guided in a manner that redirects the chain to the plane of rotation defined by the chain when engaged and rotating on the inner chain ring. | 09-22-2011 |
20120083371 | BICYCLE DERAILLEUR WITH ROTATION RESISTANCE - A bicycle derailleur comprises a base member, a movable member movably coupled to the base member, and a chain guide coupled to the movable member for rotation around a rotational axis. A resistance applying element applies resistance to rotational movement of the chain guide. A resistance control element moves between at least different first and second positions, wherein the resistance control element is disposed so that the resistance control element can be directly manipulated by a user without using a tool. The resistance control element is operatively coupled to the resistance applying element so that the resistance applying element applies different first and second resistances to rotational movement of the chain guide when the resistance control element is disposed in the respective first and second positions. | 04-05-2012 |
20120083372 | BICYCLE DERAILLEUR WITH ROTATION RESISTANCE - A bicycle derailleur comprises a base member, a movable member movably coupled to the base member, and a chain guide coupled to the movable member for rotation around a rotational axis. A resistance applying element applies resistance to rotational movement of the chain guide, and a resistance control element moves between at least different first and second positions. The resistance control element is operatively coupled to the resistance applying element so that the resistance applying element applies different first and second resistances to rotational movement of the chain guide when the resistance control element is disposed in the respective first and second positions. | 04-05-2012 |
20120142466 | Multiple sprocket assembly for bicycle - A multiple sprocket assembly includes a number of sprockets attached to a hub of a bicycle frame, and a rear chain transfer device having a carrier slidably attached to the bicycle frame and movable relative to an image plane formed by addendum of the teeth of the sprockets for engaging with a chain and for carrying and moving the chain onto the teeth of the sprockets, the rear chain transfer device includes a support attached to the bicycle frame, and a sliding member slidably attached to the support, and the carrier is attached to the sliding member for engaging with the chain and for carrying and moving the chain onto the teeth of the sprockets, an actuating device moves the sliding member relative to the support. | 06-07-2012 |
20120149509 | ACTUATOR DEVICE FOR A BICYCLE GEARSHIFT AND NUT FOR SUCH A DEVICE - An actuator device for a bicycle gearshift, comprising an actuation kinematic mechanism adapted to be deformed in order to move a derailleur of the gearshift; a driving member adapted to control the deformation of the aforementioned kinematic mechanism, the driving member comprising a motor and a threaded drive shaft put in rotation by the motor; a nut associated with the aforementioned kinematic mechanism and with the drive shaft. The actuator device comprises a snap mechanism that, in a first operative configuration, holds the nut in an engaged condition with the drive shaft such that the rotation of the drive shaft causes the deformation of the actuation kinematic mechanism and that, when the actuator device is subjected to a force greater than a predetermined threshold force, defines a release configuration in the nut, such that the rotation of the drive shaft does not cause the deformation of the actuation kinematic mechanism. | 06-14-2012 |
20120157250 | Bicycle Derailleur and Method - A front derailleur for use on devices such as bicycles is movable about a yaw axis while it moves laterally. The front derailleur may include a linkage in between a mount and a cage, with the linkage pivoting about two non-parallel axes. The front derailleur may include a linkage in between the mount and the cage that has links of different effective lengths. The front derailleur may include a single link and a cam. | 06-21-2012 |
20120214628 | GEAR TRANSMISSION AND DERRAILLEUR SYSTEM - A transmission system for vehicles, including bicycles, is disclosed. The system aligns a chain or other drive means to a center of each of a plurality of provided sprockets, allows for a smaller, lighter and more durable shifter/controller, and reduces various complications associated with cable slack and shifting. A derailleur is provided with linear actuated features to directly translate drive means from one position to another along a desired path. | 08-23-2012 |
20120258826 | Multiple sprocket assembly for bicycle - A multiple sprocket assembly includes a number of sprockets attached to a hub of a bicycle frame, and a rear chain transfer device having a sliding member slidably attached to a guiding device, and a carrier attached to the sliding member and movable relative to the sprockets for engaging with a chain and for carrying and moving the chain onto the teeth of the sprockets, the rear chain transfer device includes a support attached to the bicycle frame, and the guiding device is secured to the support, the guiding device includes one or more tracks or channels for slidably engaging with and for guiding the sliding member to move relative to the guiding device. | 10-11-2012 |
20120258827 | MOTION RESISTING APPARATUS FOR A BICYCLE DERAILLEUR - A bicycle derailleur apparatus comprises a base member for coupling to a bicycle frame, a movable member coupled for movement relative to the base member, a chain guide coupled to the movable member for moving a chain from an origin sprocket to a destination sprocket in response to movement of the movable member, a biasing device that provides a biasing force to the chain guide for tensioning the chain, and a movement resisting device with a control element for the application of a signal that causes the movement resisting device to selectively apply and remove resistance to movement of the chain guide. The movement resisting device is operable to remove resistance to movement of the chain guide when the chain guide moves the chain from the origin sprocket to the destination sprocket. | 10-11-2012 |
20120295745 | BICYCLE FRONT DERAILLEUR - A bicycle front derailleur is basically provided with a base member and a movable member. The base member includes a bicycle mounting portion. The movable member is movably supported to the base member between a retracted position and an extended position relative to the base member. The movable member includes a first guide plate having a first inner surface and a second guide plate having a second inner surface. The first and second inner surfaces face each other to form a chain receiving slot therebetween. The second guide plate includes an adjustable guide member that is arranged at the chain receiving slot to move between at least two different positions relative to the second guide plate. | 11-22-2012 |
20120322591 | REAR DERAILLEUR AND GEAR SHIFT SYSTEM - A motorized rear derailleur is basically provided with a base member, a movable member, a pulley arrangement, a motor unit and a power limit circuit. The movable member is movably mounted to the base member between a plurality of gear positions. The pulley arrangement is supported by the movable member. The pulley arrangement includes a pulley having a dynamo that generates electrical energy in response to rotation of the pulley. The motor unit is operatively coupled between the base member and the movable member to selectively move the movable member relative to the base member between the gear positions. The motor unit is electrically coupled to the dynamo to selectively receive electrical energy generated by the dynamo. The power limit circuit is electrically coupled between the dynamo and the motor unit. | 12-20-2012 |
20130029795 | Bicycle Derailleur and Method - A front derailleur for use on devices such as bicycles includes a moveable chain guide for engaging a chain and able to cause the chain to be moved between two or more chainrings. The guide includes a first discrete alignment indicator and a second discrete alignment indicator for aligning the derailleur. | 01-31-2013 |
20130079184 | BICYCLE REAR DERAILLEUR - A bicycle rear derailleur is basically provided with a base member, a cable operated structure, a movable member and a biasing member. The movable member is movably supported to the base member by the cable operated structure to move between a plurality of shift stage positions with respect to the base member. The biasing member is interposed between the first and second link members such that the movable member is biased towards one of a top shift stage position and a low shift stage position. The cable operated structure and the biasing member configured balance an operation energy used for shifting between each of the shift stage positions. | 03-28-2013 |
20130085024 | FRONT DERAILLEUR WITH FRAME SUPPORT STRUCTURE - A bicycle front derailleur that includes a chain guide configured to engage a bicycle chain and a mounting member operatively coupled to the chain guide. The mounting member includes a frame support structure that includes a contact member that is configured to contact the frame of the bicycle, and a support member mounted to the mounting member. The contact member is supported by the support member. | 04-04-2013 |
20130085025 | FRONT DERAILLEUR WITH CONTACT MEMBER - A bicycle front derailleur that includes a main body and a chain guide operatively coupled to the main body. The chain guide includes a first plate, a second plate, and a contact member affixed to the first plate. The contact member includes a flexible portion that is adapted to flex when contacted by a chain running through the chain guide. | 04-04-2013 |
20130085026 | BICYCLE FRONT DERAILLEUR WITH A VARIABLE ACTUATION RATIO - A front derailleur comprises a base member structured to be attached to a bicycle frame member, a chain guide operatively connected to the base member, and an actuation mechanism coupled to the base member and to the chain guide for moving the chain guide relative to the base member between a first position corresponding to a location for positioning a chain on a first sprocket and a second position corresponding to a location for positioning the chain on a second sprocket. The actuation mechanism is configured so that an actuation ratio of the derailleur when the chain guide is located in the first position is greater than or equal to 1.5 times the actuation ratio when the chain guide is located in the second position. | 04-04-2013 |
20130090195 | APPARATUS FOR CONTROLLING MULTIPLE BICYCLE OPERATING CHARACTERISTICS - A bicycle operating characteristic control apparatus includes a first bicycle component and a second bicycle component, wherein the second bicycle component is changeable from a first status to a second status. The first bicycle component includes a base member for coupling to a bicycle frame, a movable member coupled for movement relative to the base member, and a chain guide coupled to the movable member for guiding a chain among a plurality of sprockets in response to movement of the movable member. A biasing device provides a biasing force to the chain guide for tensioning the chain, and a rotation resistance changing device changes a rotational resistance of the chain guide relative to the movable member. The first bicycle component and the second bicycle component are operatively coupled so that rotational resistance of the chain guide changes in conjunction with a change of status of the second bicycle component. | 04-11-2013 |
20130090196 | BICYCLE DERAILLEUR - A bicycle derailleur basically includes a base member, a movable member, a chain guide, a friction element and a motor. The base member is configured to be mounted to a bicycle. The movable member is movably coupled to the base member. The chain guide is coupled to the movable member to rotate around a rotational axis with respect to the movable member. The friction element is operatively arranged between the movable member and the chain guide to frictionally provide rotational resistance in a first rotational direction of the chain guide. The motor is operatively coupled to the movable member to move the movable member with respect to the base member. | 04-11-2013 |
20130130853 | Rear derailleur device for a bicycle shifting system - A derailleur device, particularly a rear derailleur, includes at least one locking device for locking a chain guide at least in one locking position that is different from the starting position in relation to a movable element, and it is provided therein that the locking device includes a locking element displaceable between a passive position, in which the chain guide is released in relation to the movable element, and at least one active position, in which the chain guide is held in the at least one locking position. | 05-23-2013 |
20130137541 | GEAR TRANSMISSION AND DERRAILLEUR SYSTEM - A transmission system for vehicles, including bicycles, is disclosed. The system aligns a chain or other drive means to a center of each of a plurality of provided sprockets, allows for a smaller, lighter and more durable shifter/controller, and reduces various complications associated with cable slack and shifting. A derailleur is provided with linear actuated features to directly translate drive means from one position to another along a desired path. | 05-30-2013 |
20130225340 | UNIVERSAL SKIP-FREE DERAILLEUR - A front derailleur with controllable full rotational movement with two operator selectable radial arms—one for pole-vaulting the chain to larger sprockets, the other for sliding the chain to smaller sprockets. | 08-29-2013 |
20130252772 | DERAILLEUR - The present invention is a derailleur for moving a chain to a different sized sprocket in a drive sprocket nest comprising: a feed arm for directing onto one of multiple sprockets within the drive sprocket nest when the feed arm is rotatably mounted at a pivot end onto a frame of a vehicle; a take up roller attached to the feed arm supporting the chain so that when the take-up roller moves laterally the chain moves from one sprocket to another sprocket in the drive sprocket nets; a roller feel sprocket supporting the chain so that the chain contacts over ½ the perimeter of the sprocket contacting the chain in the drive sprocket nest; an opposite chain guide end attached to the feed arm so that the chain guide end traces a path substantially parallel to a tangent to the outer periphery of the drive sprocket nests. | 09-26-2013 |
20130267362 | Bicycle Transmission - Embodiments are directed to bicycle drive trains, as well as methods and systems for changing gear ratios within the bicycle drive trains. A bicycle drive train includes a crank assembly, where the crank assembly is configured to rotate about an axis. The crank assembly defines a plane generally transverse to the axis. The crank assembly includes at least one driving gear in the plane that is of a first gear size. The crank assembly is also configured to selectively vary the size of the driving gear in the plane, so that the driving gear changes size while remaining positioned within the plane. The crank assembly may also be configured to include hinged gear segments that, when moved about their hinge, allow gear shifts along the same linear plane. | 10-10-2013 |
20130281237 | Rear Derailleur - A rear derailleur is adapted to be secured to a side of a rear fork portion of a vehicle frame. When the front derailleur pull tight or release a transmission cable, a transmission lever is move back and forth in a threaded shaft base and a foot portion of a lever control cable also pulls a chain retaining lever to rotate, so that a position of a distal point of the rotating chain retaining lever resulting from a movement of a retracing spring is changed. Accordingly, effects such as gear shift-up, gear fixing, gear shift-down, and angle adjusting of chain retaining steering wheel are achieved. In addition, occurrence of disorder of the derailleur system and slipping off of the chain are reduced. | 10-24-2013 |
20130288834 | BICYCLE DERAILLEUR WITH ROTATION RESISTANCE AND RESISTANCE CONTROL - A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, a chain guide coupled to the movable member for rotation around a rotational axis, a resistance applying element that applies resistance to rotational movement of the chain guide, and a resistance control element. The resistance control element applies a force to the resistance applying element in a direction that is non-parallel with the rotational axis, without any manual operations, to prevent a reduction in the resistance to rotational movement of the chain guide applied by the resistance applying element. | 10-31-2013 |
20130303317 | BICYCLE DERAILLEUR WITH CHAIN GUIDE LOCKING - A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member, a linkage mechanism coupled between the base member and the movable member so that the movable member moves relative to the base member, and a chain guide coupled to the movable member for movement relative to the movable member. A position-fixing member selectively fixes a position of the movable member relative to the chain guide. | 11-14-2013 |
20130310204 | BICYCLE DERAILLEUR WITH ROTATION RESISTANCE AND TACTILE FEEDBACK - A bicycle derailleur comprises a base member, a movable member movably coupled to the base member, and a chain guide coupled to the movable member for rotation around a rotational axis. A resistance-applying element applies resistance to rotational movement of the chain guide, and a resistance control element moves between at least different first and second positions. The resistance control element is operatively coupled to the resistance-applying element so that the resistance-applying element applies different first and second resistances to rotational movement of the chain guide when the resistance control element is disposed in the respective first and second positions. A jolt element is disposed within the movable member and is operatively associated with the resistance control element to provide a tactile jolt to a user as the user moves the resistance control element from the first position to the second position. | 11-21-2013 |
20140121047 | ELECTRIC DERAILLEUR MOTOR UNIT AND MOTORIZED DERAILLEUR - An electric derailleur motor unit includes a base member, a motor, an output shaft, and a drive train. The motor is mounted to the base member. The motor has a motor shaft rotatable about a first rotational axis. The output shaft is rotatable about a second rotational axis. The drive train is operatively disposed between the motor shaft of the motor and the output shaft. The drive train includes an anti-reverse clutch. The anti-reverse clutch is configured to transmit rotation of the motor shaft of the motor in both rotational directions about the first rotational axis to the output shaft. The anti-reverse clutch is further configured to prevent the output shaft from rotating in both rotational directions about the second rotational axis while the output shaft receives an external rotational torque from outside of the electric derailleur motor unit. | 05-01-2014 |
20140155204 | FRONT DERAILLEUR - A front derailleur unit basically includes a fixed member and a movable member. The fixed member is configured to be releasably attached to a plurality of different type mounting units. The different type mounting units is detachably attached to a bicycle frame. The movable member is movably supported to the fixed member to move with respect to the fixed member. | 06-05-2014 |
20140155205 | FRONT DERAILLEUR - A front derailleur basically includes a fixed member, a main body, a movable member and a support member. The fixing member is configured to be fixed to a bicycle frame. The main body is attached to the fixing member. The movable member is movably supported to the main body with respect to the fixing member. The support member is movably attached to one of the fixing member and the main body. The support member including an operated portion selectively operated by an operating element and positioned between the fixing member and the main body. | 06-05-2014 |
20140155206 | GEAR TRANSMISSION AND DERAILLEUR SYSTEM - A transmission system for vehicles, including bicycles, is disclosed. The system aligns a chain or other drive means to a center of each of a plurality of provided sprockets, allows for a smaller, lighter and more durable shifter/controller, and reduces various complications associated with cable slack and shifting. A derailleur is provided with linear actuated features to directly translate drive means from one position to another along a desired path. | 06-05-2014 |
20140155207 | KEY PULLEY SEGMENT FEATURES, SEGMENT STACK CONFIGURATION, AND CAM AND ROLLER DESIGN AND ACTUATION IN A SYNCHRONIZED SEGMENTALLY INTERCHANGING PULLEY TRANSMISSION SYSTEM - A key pulley segment in a synchronized, segmentally interchanging pulley transmission system is either first or last in a pulley segment set to engage an endless member. The first or last key segment teeth to engage or disengage, respectively, are shortened or completely trimmed, and the adjacent pulley segment to the key segment is elongated such that the inward portion of the tooth profile extends toward the key segment. Shortened tooth or teeth and an elongated adjacent segment together allow for many pulley segments to be designed as key segments. Completely trimmed teeth may be engineered to create a supporting surface for the endless member on the key segment. The elongated adjacent segment may have an extending portion which slidably mates with the supporting surface of the key segment, thereby receiving radial support therefrom. Multiple pulley segments from different pulley segment sets may be connected or constructed to move together in a unified stack, and may be staggered such that any one segment may be in an engaging position with the endless member when the unified stack is moved along the axis of rotation. Unified stacks may have guiding rails on both inner and outer radial surfaces, and the pulley assembly may have mating features that receive such guiding rails. Any number of the pulley segments in a unified stack may be key pulley segments. Pulley segments of a stack may be vertically separated into one or more unified stacks. Unified stacks may be moved by way of a cam or roller cam system, where each unified stack has a slidably or ratably attached roller and roller-arm. Chassis-mounted cams engage the rollers outside of the contact zone, rollers and roller-arms are moved into and out of engagement with the cams, and individual segments of a unified stack are moved into or out of engagement. Rollers may be actuated into and out of engagement by electromagnets, fixably mounted in an array. Rollers may discretely engage with multiple cams, by way of several electromagnet-arrays, and thereby complete several stack axial motions. Electromagnets in an array may be selectively energized to move selected rollers to an active position in order to effect key pulley segment engagement, stack axial movement and transition. | 06-05-2014 |
20140162817 | BICYCLE DERAILLEUR - A bicycle derailleur includes a base member, a movable member, a motor unit, a linkage and a saver mechanism. The linkage includes a first link that includes a first linking member and a second linking member. The first linking member is pivotally connected to the movable member. The second linking member is pivotally connected to the base member, and is attached to the first linking member. The saver mechanism includes an output member movably operated by the motor unit, a drive link movably mounted on the first link between a drive transmitting position that connects a drive force of the motor to the first link and a non-drive transmitting position that disconnect the drive force of the motor from the first link, and a biasing element biasing the drive link into engagement with the output member to maintain the drive link in the drive transmitting position. | 06-12-2014 |
20140162818 | BICYCLE REAR DERAILLEUR - A bicycle rear derailleur includes a base member, a movable member, a linkage and a motor unit. The base member is configured to be mounted to a bicycle. The movable member is movably coupled to the base member. The linkage includes an outer link pivotally connected to the base member about a first pivot axis and pivotally connected to the movable member about a second pivot axis, and an inner link pivotally connected the base member and the movable member. The motor unit includes an output shaft having a rotational axis being parallel to one of the first pivot axis and the second pivot axis. The output shaft of the motor unit drives the outer link to move the movable member with respect to the base member. The inner link moves in response to movement of the outer link. | 06-12-2014 |
20140179470 | DEVICE FOR A BICYCLE PROVIDED WITH CHAIN WHEELS AND SPROCKETS | 06-26-2014 |
20140213397 | REAR DERAILLEUR - A rear derailleur is basically provided with a base member, a movable member, a chain guide, a friction element, a one-way clutch and an electric actuator. The base member is configured to be mounted to a bicycle. The movable member is movably coupled to the base member. The chain guide is coupled to the movable member to rotate around a rotational axis with respect to the movable member. The friction element is operatively arranged between the movable member and the chain guide to frictionally provide rotational resistance in a first rotational direction of the chain guide. The one-way clutch is operatively disposed between movable member and the chain guide to engage the friction element as the chain guide rotates in the first rotational direction. The electric actuator is operatively coupled to the one-way clutch to control the one-way clutch between a clutch-on mode and a clutch-off mode. | 07-31-2014 |
20140235383 | ELECTRIC BICYCLE TRANSMISSION - The invention includes a multi-speed transmission for an electric motor propelled bicycle with multiple gear combinations for driving the bicycle that constitute the full gear range of the transmission. A portion of the full gear range is operated to shift automatically and a portion is shifted manually. Additionally, the control of the electric motor and control of the shifting operations may be integrated to allow the output power of the motor to be decreased during a shifting operation. | 08-21-2014 |
20140243126 | BICYCLE FRONT DERAILLEUR - A bicycle front derailleur includes abase member configured to be attached to a bicycle frame, a chain guide configured to engage a chain, a connecting structure that connects the chain guide to the base member such that the chain guide can move relative to the base member, and an attachment structure detachably attaching the chain guide to the connecting structure and/or the connecting structure to the base member. | 08-28-2014 |
20140243127 | MOTORISED BICYCLE GEARSHIFT WITH ACTUATION IN TRANSLATION OF THE DRIVE SHAFT - A motorised bicycle gearshift that has a deformable articulated kinematic mechanism, fixed to a bicycle frame and capable of taking up different operating configurations; a chain guide, carried by the deformable articulated kinematic mechanism, capable of taking up different positions with respect to the bicycle frame according to the different operating configurations of the deformable articulated kinematic mechanism; a motor member, comprising a motor casing and a master drive shaft that projects directly from the motor casing, the motor member being mounted on the deformable articulated kinematic mechanism so as to deform it, thus making it take up the different operating configurations. The master drive shaft is immobile in rotation and mobile in translation in the axial direction, with respect to the motor casing. This gearshift provides greater precision in use, because the possible presence of dirt on the master drive shaft does not hamper the movements thereof. | 08-28-2014 |
20140243128 | BICYCLE DERAILLEUR GEAR, PARTICULARLY A FRONT DERAILLEUR GEAR, WITH IMPROVED RELIABILITY - The present invention relates to a bicycle derailleur gear, particularly a front derailleur gear, with improved reliability that comprises a kinematic mechanism in the form of a four-bar linkage with a base body and a mobile body connected together through a pair of connecting rods hinged to the base body and to the mobile body at four pin elements, the mobile body carrying a chain guide, the four-bar linkage-kinematic mechanism being associated with derailleur gear actuation means suitable for deforming the four-bar linkage-kinematic mechanism so as to determine a displacement of the mobile body with respect to the base body and consequently a displacement of the chain guide, the derailleur gear actuation means being of the motorized type and comprising a motor casing and an outlet shaft that projects directly from said motor casing and characterised in that the actuation means command a translation in the axial direction of the outlet shaft with respect to the motor casing and are mounted between distinct components of the four-bar linkage-kinematic mechanism through interposition of at least one tilting interface about a fifth pin element substantially parallel to the pin elements. | 08-28-2014 |
20140274507 | SINGLE PIVOT FRONT DERAILLEUR - Embodiments of a front derailleur gear shifting system including various unique chain guides attached to and operating from a single pivot point. This derailleur system provides a simple, yet, elegant and robust improvement in shifting technique over conventional, lateral motion front derailleurs. Embodiments of open and closed annulus chain guides having specially shaped lifting and pulling surfaces for acting upon a bicycle chain during shifting are also disclosed. Additionally, as an optional enhancement, a dual-sided chain catcher that prevents unintended over-shifts in either direction is disclosed. | 09-18-2014 |
20140287856 | ELECTRIC FRONT DERAILLEUR - An electric front derailleur is provided with a base member, a movable member, a driving unit and a controller. The base member includes a bicycle mounting portion. The movable member moves with respect to the base member. The controller selectively operates the driving unit with one of a first mode which moves the movable member between a first end position and a second end position, and a second mode which moves the movable member between a third end position and a fourth end position. The controller operates the driving unit to selectively position the movable member at first, second and third stop positions while in the first mode. At least one of the third and fourth end positions differs from the first and second end positions. A first distance between the first and second stop positions differs from a second distance between the second and third stop positions. | 09-25-2014 |
20140296009 | REAR DERAILLEUR - A rear derailleur includes a base member, a movable member, a linkage and an electric motor unit. The base member includes a bicycle mounting portion for attaching to a bicycle. The movable member includes a chain guide having a first pulley that rotates around a first pulley axis in a center pulley plane that bisects the first pulley. The linkage movably supports the movable member relative to the base member. The electric motor unit is stationary with respect to at least a part of the base member and operatively coupled to the linkage to move the movable member relative to the base member between an outermost lateral position and an innermost lateral position. The electric motor unit is at least partially disposed inward of the center pulley plane while the movable member is disposed in the outermost lateral position. | 10-02-2014 |
20140315671 | DEVICE FOR MOUNTING A FRONT DERAILLEUR ON A BICYCLE FRAME AND METHOD FOR MOUNTING SUCH A FRONT DERAILLEUR - The present invention relates to a device for mounting a front derailleur on a bicycle frame. The device of the invention comprises engagement means for engaging with at least one toothed crown of a crankset and with the derailleur, the engagement means being configured to obtain a desired relative position between the aforementioned at least one toothed crown and the derailleur. The present invention also relates to a method for mounting the front derailleur on the bicycle frame, such a method providing for the use of the aforementioned device. | 10-23-2014 |
20140323254 | BICYCLE DERAILLEUR - A bicycle derailleur includes a fixing member, a selected chain guide unit and a motor unit. The fixing member is configured to be fixed to a bicycle frame. The selected chain guide unit has a chain guide for guiding a bicycle chain and a support mechanism moveably supporting the chain guide relative to the fixing member. The selected chain guide unit is one of a plurality of different configurations of chain guide units. The motor unit is configured to be selectively attached to the selected chain guide unit to move the chain guide. The motor unit is configured to be mounted to each of the plurality of configurations of chain guide units. | 10-30-2014 |
20140349793 | FRONT DERAILLEUR - A front derailleur is basically provided with abuse member, a chain guide, a link mechanism and a cable guiding structure. The base member is fixedly coupled to a bicycle. The chain guide is configured to guide a chain. The link mechanism movably couples the chain guide to the base member between a retracted position and an extended position in response to movement of an operation cable. The link mechanism includes a cable attachment portion that is configured to be attached to the operation cable. The cable guiding structure guides the operation cable from the cable attachment portion. The cable guiding structure is disposed on at least one of the base member and the link mechanism. The cable guiding structure has a cable exit that is arranged such that the operation cable exits forwardly from the cable guiding structure towards the front of the bicycle. | 11-27-2014 |
20150018145 | FRONT DERAILLEUR - A front derailleur is provided for mounting to a bicycle having a crank axis. The front derailleur is provided with a base member, a chain guide and a link mechanism. The base member is mounted on the bicycle for positioning in a predetermined adjustment direction. The chain guide guides the chain. The link mechanism movably couples the chain guide to the base member. The link mechanism includes a first link member pivotally arranged in relation to the base member about a first link axis and pivotally arranged in relation to the chain guide about a second link axis. The first link axis and the second link axis are arranged non-parallel and non-orthogonal to the predetermined adjustment direction when viewed from the axial direction of the crank axis in a state where the base member is mounted to the bicycle. | 01-15-2015 |
20150018146 | FRONT DERAILLEUR - A front derailleur is attachable to a bicycle with a frame in which a fixing bore is provided. The front derailleur basically includes a base member, a chain guide and a link mechanism. The base member has an attaching bore for attaching the base member to a fixing bore of a frame by a fastening member. The chain guide configured to guide a chain. The link mechanism movably couples the chain guide to the base member. The base member is disposed with respect to the chain guide such that at least a part of the attaching bore is disposed in front of the chain guide and above the chain guide while the front derailleur is in a state in which the base member is attached to the frame. | 01-15-2015 |
20150031483 | BICYCLE DERAILLEUR - A bicycle derailleur is basically provided with a main body, a chain cage, a first pulley, a second pulley and a chain contact member. The main body is configured to be mounted to a bicycle. The chain cage is pivotally coupled to the main body movement between at least a first orientation and a second orientation. The first pulley is rotatably coupled to one of the chain cage and the main body. The second pulley is rotatably mounted to the chain cage to move therewith relative to the main body. The chain contact member is coupled to the main body. The chain contact member includes a non-rotatable chain contact portion that projects into a chain path between the first and second pulleys while the chain cage is in the first orientation, and that is located outside of the chain path between the first and second pulleys while the chain cage is in the second orientation. | 01-29-2015 |
20150094177 | DERAILLEUR - A derailleur comprises a base member, a movable member, a link member, and a biasing mechanism. The movable member is configured to be movable with respect to the base member between a retracted position and an extended position. The link member is configured to movably couple the movable member to the base member. The biasing mechanism is configured to bias the link member such that the movable member is disposed at one of the retracted position and the extended position. The biasing mechanism comprises a biasing member and an intermediate member. The biasing member has a first end portion. The intermediate member is separately provided from the movable member and the link member so as to transmit biasing force of the biasing member from the first end portion to one of the movable member and the link member through the intermediate member. | 04-02-2015 |
20150094178 | DERAILLEUR - A derailleur comprises a base member, a chain guide, a link member, and a shaft member. The base member is configured to be attached to a bicycle frame. The chain guide comprises a first member and a second member. The first member includes a first connecting portion. The second member includes a second connecting portion to overlap the first connecting portion. The link member is configured to movably couple the chain guide to the base member. The shaft member is configured to couple the first connecting portion to the second connecting portion and configured to rotatably couple the chain guide to the link member. | 04-02-2015 |
20150099599 | DEVICE FOR STOPPING THE LATERAL DISPLACEMENT OF A BICYCLE CHAIN - The present invention relates to a device for stopping lateral displacement of a bicycle chain. The device comprises a mounting element configured to be mounted on a bicycle frame. The mounting element comprises a first portion configured to be coupled, at a first coupling axis, with a front derailleur of a bicycle, and a second portion configured to be coupled, at a second coupling axis distinct from said first coupling axis, with a stop element that stops the lateral displacement of said chain. | 04-09-2015 |
20150148159 | DEVICE FOR MOUNTING A DERAILLEUR OF A REAR GEARSHIFT ON A BICYCLE FRAME - A device for mounting a derailleur of a rear gearshift on a bicycle frame is provided. The device includes a pin suitable for being fixed in a corresponding seat of said bicycle frame, an annular seat formed on said pin, a support body of said derailleur, a through hole formed in said support body and crossed by said pin, an abutment element associated with said pin in said annular seat, wherein said abutment element provides a support in the axial direction on said pin. Said abutment element comprises a first and a second component, which are shaped like an annular sector and that can be connected together through respective shaped attachment portions. | 05-28-2015 |
20160046352 | Bicycle Rear Derailleur with a Damper Assembly - A bicycle rear derailleur includes a base member mountable to a bicycle frame. A movable member is movably coupled to the base member. A chain guide assembly is rotatably connected to the movable member for rotation about a rotation axis. A biasing element is configured to bias the chain guide assembly for rotation in a first rotational direction with respect to the movable member. A damper assembly is operatively disposed between the chain guide assembly and the movable member to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction opposite to the first rotational direction. The damper assembly includes a one-way roller clutch assembly disposed coaxially about the rotational axis and a friction unit extending circumferentially over a circumferential angle coaxially about the rotational axis. | 02-18-2016 |
20160068225 | BICYCLE FRONT DERAILLEUR - A front derailleur is provided with a base member, a linkage assembly, a chain guide, an input link, a connecting link and an outer casing receiving part. The linkage assembly includes a first link coupled to the base member at a first pivot axis, a second link coupled to the base member at a second pivot axis, and an extension link coupled to the first link and the base member. The chain guide is coupled to the first and second links. The input link, is supported relative to the base member about a third pivot axis, and connects to an operation cable. The connecting link is connected to the input link about a fourth pivot axis and to the extension link about a fifth pivot axis. The outer casing receiving part is disposed on the base member and receives an outer casing through which the operation cable passes. | 03-10-2016 |
20160075401 | BICYCLE DERAILLEUR - A bicycle derailleur includes abuse member, a movable member and a linkage assembly. The base member is mounted to a bicycle frame. The movable member moves between a retracted position and an extended position at which the movable member is farther from the base member than the retracted position. The linkage assembly operatively couples the base member and the movable member. The linkage assembly includes a first link, a second link, an extension link and a sliding link. The first and second links are pivotally coupled between the base member and the movable member. The extension link extends from one of the first and second links toward the other of the first and second links. The sliding link includes a sliding portion slidably coupled to the extension link to slide along the extension link and a pivoting portion pivotally coupled to the other of the first and second links. | 03-17-2016 |
20160083046 | FRONT DERAILLEUR - A front derailleur is basically provided with a base member, a chain guide, a link mechanism and a cable guiding structure. The base member is fixedly coupled to a bicycle. The chain guide is configured to guide a chain. The link mechanism movably couples the chain guide to the base member between a retracted position and an extended position in response to movement of an operation cable. The link mechanism includes a cable attachment portion that is configured to be attached to the operation cable. The cable guiding structure guides the operation cable from the cable attachment portion. The cable guiding structure is disposed on at least one of the base member and the link mechanism. The cable guiding structure has a cable exit that is arranged such that the operation cable exits forwardly from the cable guiding structure towards the front of the bicycle. | 03-24-2016 |
20160121967 | BICYCLE DERAILLEUR - A bicycle derailleur comprises a base member, a chain guide, a first link, and a wire guide. The base member is configured to be coupled to a bicycle frame. The chain guide is configured to guide a bicycle chain. The first link is configured to couple the chain guide to the base member so that the chain guide is movable relative to the base member between a retracted position and an extended position. The wire guide includes only one wire guiding portion configured to guide an inner wire of a control cable which is in at least one of a top pull arrangement and a bottom pull arrangement. The wire guide is a separate member from the first link and configured to be attached to the first link. | 05-05-2016 |
20160167739 | BICYCLE DERAILLEUR | 06-16-2016 |
20190144071 | ELECTROMECHANICAL DERAILLEUR | 05-16-2019 |