Class / Patent application number | Description | Number of patent applications / Date published |
192043000 | Reversible | 48 |
20080223681 | SELECTABLE ONE-WAY CLUTCH - A controllable selectable one-way clutch is provided for use within a hybrid transmission. The clutch comprises an outer and inner race, and a first and second selector plate. A transmission motor controller synchronizes the speeds of the races to facilitate application and release of the clutch, and a transmission controller communicates a signal to the clutch for re-positioning of the plates to apply and release the clutch. The clutch has three operational modes, including freewheeling and holding torque in one direction or both directions. A method is also provided for applying a selectable one-way clutch in a vehicle having a hybrid transmission with a motor controller and a transmission controller, including synchronizing the clutch speed using the motor controller, detecting the direction of the race speed difference, communicating the race speed difference to the transmission controller, and selecting between the clutch operational modes in response to the detected speed difference. | 09-18-2008 |
20100089714 | ROTATIONAL DIRECTION SWITCHING CLUTCH UNIT - The object is to improve the control of a spring clutch, thereby simplifying the structure of a rotational direction switching clutch unit and thus reducing its cost. | 04-15-2010 |
20100101909 | Overrunning Decoupler With Locking Mechanism - An overrunning accessory decoupler with a locking mechanism provides the desired overrunning accessory decoupler functionality and also permits torque to be transferred from the accessory to which the decoupler is installed to the drive of the engine when desired. In one embodiment, the decoupler includes a locking mechanism that is controlled by centrifugal forces developed in the decoupler to lock the decoupler to permit the accessory to transfer torque to the drive to start or boost the engine. In another embodiment, the decoupler locking mechanism includes an electromagnet that can be energized to lock and/or unlock the decoupler. | 04-29-2010 |
20100108454 | SWITCHING DEVICE FOR SWITCHING DRIVING FORCE BETWEEN FORWARD AND REVERSE DIRECTIONS - The object is to provide a switching device for switching driving force between forward and reverse directions in which the same intermediate shaft can be used both when a spring clutch is used and when a roller clutch is used. | 05-06-2010 |
20100126817 | BI-DIRECTIONAL CLUTCH WITHOUT ROLLER ELEMENTS - Example aspects of the present invention broadly comprise at least two concentric rings with complementary ramped surfaces, at least one of the rings being rotatable relative to another one of the rings so that contact is made at the ramped surfaces. The complementary ramped surfaces form respective circumferences of the rings. At least one of the ramped surfaces may have a sinusoidal profile, or a profile forming at least one of a straight line, concave, or convex. In some example embodiments of the invention, a first one of the rings is a coupling member and a second one of the rings is a tubular slipper with a friction surface radially opposite of the ramped surface. The tubular slipper is arranged to radially expand or contract upon contacting the coupling member. | 05-27-2010 |
20100252385 | HAND TOOL WITH STEPLESS LOCKING MECHANISM - A ratchet mechanism contains a chamber defined by at least one gear surface, a rotating member positioned at least partially within the chamber, a gear member rotatably attached to the rotating member and positioned at least partially within the chamber, and a stop member engaging the rotating member, such that the rotating member and the stop member rotate in unison. The center of rotation of the gear member is offset from the center of rotation of the rotating member. The gear member includes a gear body having a plurality of gear teeth around an outer periphery thereof. At least a portion of the gear teeth engage the gear surface. The gear member can rotate freely in a first rotational direction, and a portion of the stop member abuts a portion of the gear member to prevent rotation of the gear member in a second, opposed rotational direction. | 10-07-2010 |
20120067686 | ACTUATOR FOR OPERATING A MULTI-DIRECTIONAL CLUTCH - An actuator for operating a multi-mode overrunning multi-directional clutch. The actuator includes an axially displaceable shaft portion, a brake portion connected to the shaft portion and having a resilient segment for displacing a brake piston to engage the clutch. A locking portion is connected to the shaft portion for displacing an actuator pin to lock the clutch. In an example embodiment, the clutch is a three-mode overrunning bi-directional clutch. In some example embodiments, the resilient segment is radially flexible. In some example embodiments, the brake portion includes a tubular section with a plurality of circumferentially-offset axial slots, and the resilient segment is circumferentially disposed between corresponding axial slots. | 03-22-2012 |
20140027233 | FREEWHEEL DEVICE WITH SWITCHABLE FREEWHEEL - A number of variations may include a freewheel device having a switchable freewheel which may include a first race, a second race, locking elements arranged between the first and second races and a locking element cage for receiving the locking elements which may be rotated relative to the first race, and comprising a switching device by means of which the locking element cage may be rotated to a first rotational position relative to the first race in which the first race is in rotationally entraining connection to the second race via the locking elements in a first direction of rotation relative to the second race, and to a second rotational position relative to the first race in which the first race is not in rotationally entraining connection to the second race in the first direction of rotation relative to the second race, the switching device being formed by a first planetary gear, a second planetary gear and a switching drive. | 01-30-2014 |
20140041982 | RATCHET TOOL - A ratchet socket or tool includes a socket member, two retaining rings engaged in the socket member, a driving member rotatably engaged in the socket member and having a gear, and a pawl engaged in the socket member and having a lever arm extended from a shaft, and one or more teeth formed on the lever arm for engaging with the gear and for determining the driving direction of the driving member by the socket member, the shaft includes two end segments extended beyond the lever arm for forming two engaging surfaces and for engaging with the retaining rings which apply a spring biasing force onto the end segments of the shaft and to force the teeth of the lever arm to engage with the gear. | 02-13-2014 |
20140069760 | POWER TOOL - A reciprocal switching structure of a ratchet wrench is provided and includes a case, a gear assembly, two gear racks, a reciprocal switching mechanism, and a transmission unit. The case has a first end and a second end, wherein the second end is adjacent to a gripping part of the ratchet wrench and is opposite to the first end. The gear assembly is pivotally disposed in the case. The two gear racks engage or disengage from the gear assembly reciprocally. The reciprocal switching mechanism is disposed in the case and includes two push rods and at least one reciprocal switching member. The transmission unit pivotally is disposed in the case, and is pivotally connected between the two gear racks for driving the two gear racks to be displaced. | 03-13-2014 |
20140182992 | RATCHET WRENCH WITH A DIRECTION SWITCHING DEVICE - A ratchet wrench includes a direction switching device. The direction switching device includes two switching members for controlling the rotational direction of a gear, a resilient unit disposed among a body and the switching members for biasing the switching members away from the gear, and a ring unit disposed rotatably on the body. The ring unit includes a convex portion and a concave portion, and is operable to allow the convex portion and the concave portion to act on the switching members, so that one of the switching members comes into contact with the gear, while the other of the switching members is removed from the gear. When no external force is applied to the ring unit, the switching members are biased by the resilient unit to remove from the gear. | 07-03-2014 |
20140291099 | SWITCHABLE BI-DIRECTIONAL WEDGE CLUTCH - A switchable clutch, including: a first outer race; a second outer race; an inner race; at least one wedge block at least partially radially located between the inner race and the first and second outer races; and a single actuator rod displaceable to position the at least one wedge block. In a first position for the actuation rod and the at least one wedge block, the first outer race and the inner race are non-rotatably connected. In a second position for the actuation rod and the at least one wedge block, the second outer race and the inner race are non-rotatably connected. In a third position for the actuation rod and the at least one wedge block, the inner race is rotatable with respect to the first and second outer races. | 10-02-2014 |
20140326565 | TWO-WAY CLUTCH - A two-way clutch includes an outer race having a cam section in an inner periphery, an inner race that is separated in an inside diameter direction with respect to the outer race, and is disposed concentrically to be relatively rotatable, a torque transmission member that is disposed between the outer race and the inner race, and transmits torque, a cage that is capable of engaging with the torque transmission member and is movable in a circumferential direction, a drag strip that is supported by the cage, and a switching mechanism that can cause the two-way clutch to take at least a state locked in two directions by causing the drag strip to slide onto the inner race. | 11-06-2014 |
20140332335 | WEDGE CLUTCH WITH A SPLIT HUB - A bi-directional wedge clutch, including: an outer race; first and second inner hubs; a wedge plate, radially located between the outer race and the inner hubs; and an axially displaceable activation hub engaged with the inner hubs and arranged to: for a free-wheel mode, rotate at least one of the inner hubs in a first rotational direction, with respect to the other of the inner hubs, such that the wedge plate is free of contact with the outer race; and for a locking mode, rotate the at least one of the inner hubs in a second rotational direction, opposite the first rotational direction, with respect to the other of the inner hubs, to non-rotatably connect the wedge plate with the outer race and the inner hubs. | 11-13-2014 |
192430100 | Pivoted pawls | 20 |
20080217131 | DUAL ONE-WAY CLUTCH ASSEMBLY - A device for transmitting torque between a first component and a second component is provided. The device includes a first race coupled to the first component and a second race coupled to the second component. The second race is disposed concentrically with the first race. A first rocker is pivotally connected to the first race and is moveable to rotationally fix the first race to the second race to transfer torque therebetween. A second rocker is pivotally connected to the first race and is disposed axially adjacent to the first rocker. The second rocker is moveable to rotationally fix the first race to the second race to transfer torque therebetween. A selector ring is disposed between the first race and the second race. The selector ring is moveable to engage the first rocker to prevent the first rocker from engaging the second race. | 09-11-2008 |
20080308376 | Ratcheting Mechanism - A ratcheting mechanism for a hand-held tool is provided. The mechanism includes a housing having a central opening and a pair of slots disposed on opposite sides of the opening. Each slot has an arcuate or circular end portion opposite the central opening which circumscribes an arc of greater than 180° in order to pivotally retain a generally circular stem of a pawl therein. Due to the presence of a pair of biasing members within the housing, each pawl is biased inwardly towards the central opening and into engagement with teeth located on the exterior of a gear rotatably disposed within the central opening. A cap rotatably connected to the housing over the pawls and the central opening is able to selectively disengage one of the pawls to allow the rotation of the gear within the central opening in a specified direction. | 12-18-2008 |
20090045024 | Overrunning Radial Coupling Assembly Having Dual Bearing Support - An overrunning radial coupling assembly having dual bearing support is provided. The assembly includes an inner member having an outer peripheral surface and an outer member having an inner peripheral surface adjacent the outer peripheral surface in radially inner and radially outer relationship. At least one of the members is mounted for rotation about an axis. One of the members includes pockets angularly spaced about the axis. Each of the pockets has a closed end and an open end located axially opposite the closed end. The assembly further includes a plurality of pawls. Each of the pawls is located in a pocket and is supported to pivot toward the peripheral surface of the other of the members. The assembly still further includes a retainer secured to one of the members. The retainer covers the open end of the pockets. The inner and outer peripheral surfaces define a first radial bearing interface adjacent the closed end of each of the pockets. The retainer has a bearing surface which together with one of the peripheral surfaces define a second radial bearing interface adjacent the open end of each of the pockets. The first and second radial bearing interfaces react and carry an internal moment load to prevent contact of the peripheral surfaces during overrunning. | 02-19-2009 |
20090205918 | Rotary-Type Selectable One-Way Clutch - A transmission includes a selectable one-way clutch (SOWC) assembly. The SOWC assembly includes a rotatable pocket plate, a rotatable slide plate, and an annular piston having a ramped surface feature. The piston, which can be hydraulically actuated, moves axially toward the pocket plate when applied, and axially away from the pocket plate when released, to thereby select between two torque holding or operating modes of the SOWC assembly. The ramped surface feature of the piston engages an axial knob portion of the slide plate when the piston is applied to select to one operating mode, thus rotating the slide plate in one direction. A return spring moves the piston away from the pocket plate when the other operating mode is selected, and the slide plate is rotated via a spring in another direction. A guide pin maintains a relative position of the piston and the slide plate. | 08-20-2009 |
20090211863 | Controllable Overrunning Coupling Assembly - A controllable overrunning coupling assembly includes a control member mounted for controlled shifting movement between a first pair of coupling faces of first and second coupling members relative to reverse pockets formed in one of the coupling faces. The first pair of coupling faces oppose each other and are oriented to face axially along a common rotational axis. The control member is operable for controlling position of only reverse struts in the reverse pockets without controlling the position of forward rockers in forward pockets formed in a coupling face of a second pair of coupling faces of the coupling members that oppose each other and are oriented to face radially with respect to the rotational axis. | 08-27-2009 |
20090266667 | Rocker-Type Selectable One-Way Clutch With Neutral Position - A SOWC for use with a vehicle transmission is provided. The clutch includes outer and inner elements, also referred to as races, with the latter oriented concentrically within the former about an axis of rotation. A selection mechanism, which may be annular plates operatively connected with the side of the races and with one another, is selectively rotatable with respect to the inner and outer elements between different positions. Pivotable rocker elements are positioned between the races and are movable along cammed slots of the annular plates when the annular plates are rotated to establish a forward, a reverse, and a neutral operating mode corresponding with the different positions of the annular plates. In some embodiments, in the neutral operating mode, none of the rocker elements are in contact with the inner race. | 10-29-2009 |
20100122883 | SELECTABLE ONE-WAY CLUTCH WITH RADIAL INTEGRATED FORWARD/REVERSE ROCKERS - A selectable one-way clutch assembly (SOWC) includes a first race, a second race, a plurality of rockers, and a selector ring. The first race and the second race each surround the first axis. Each of the rockers selectively hold torque in a rotational direction to establish a clutch operating mode. The selector ring defines a plurality of windows and is configured to rotates about the first axis to align at least one of the windows to establish one of the plurality of different clutch operating modes. The SOWC is engaged by rotating the selector ring about the first axis to align at least one of windows in a predetermined manner. Alignment allows at least one of the rockers to engage the second race in a radial direction to hold torque in at least one rotational direction. | 05-20-2010 |
20100206679 | BIDIRECTIONAL DRIVING DEVICE - A bidirectional driving device includes a ratchet wheel, a movable handle, a fixed casing, a pawl reset spring, a handle reset spring and a central shaft. The handle reset spring is in an inner hole of the ratchet wheel, A positioning column of the handle reset spring is placed in sliding slots of the movable handle and of the fixed casing. First and second pawls are disposed between the ratchet wheel and the movable handle. Tooth sections of the first and second pawls are engaged with ratchet teeth of the ratchet wheel. Positioning columns of the first and second pawls are connected with the movable handle. Bosses of the first and second pawls are placed in sliding slots of the fixed casing, each composed of two circular arc slot sections with different radius. The pawl reset spring is connected with the bosses and with the central shaft. | 08-19-2010 |
20100230226 | OVERRUNNING ONE-WAY CLUTCH OR COUPLING ASSEMBLY - An overrunning one-way clutch or coupling assembly includes a first outer coupling member and an inner coupling member which together have a first pair of annular coupling faces therebetween and a second outer coupling member which together with the inner coupling member have a second pair of annular coupling faces therebetween. Both pairs of coupling faces are formed with sets of pockets and locking formations. Forward and reverse sets of struts are located in pockets axially spaced apart from each other. | 09-16-2010 |
20100243394 | DRIVE MECHANISM - A drive mechanism includes a housing, a stationary shaft, at least one acceleration gear assembly, a rotation plate, and at least two centrifugal blades. The acceleration gear assembly having a plurality of acceleration gears is disposed inside the housing and pivots on the stationary shaft, and skewed teeth of the housing engage with the acceleration gears to force the acceleration gears to rotate as the housing rotates. The rotation plate is disposed inside the housing and pivots on the stationary shaft, and is actuated by the acceleration gear assembly and has a first end surface, a second end surface, and a first annular surface connected with the first and the second end surfaces. The centrifugal blades are disposed on the second end surface, and one side of the centrifugal blades has a unidirectional rotatable element engaging with the skewed teeth when the rotation direction of the housing reverses. | 09-30-2010 |
20120152682 | ONE-WAY RATCHET UNIT FOR A BICYCLE WHEEL - A one-way ratchet unit for a bicycle wheel has first and second meshing parts and an elastic member. The meshing parts are respectively configured on the bicycle wheel and the sprocket driving seat, their first and second one-way ratchets both comprise ratchet tips, ratchet roots and oblique guiding facets. The ratchet tips of the first or second one-way ratchet are configured with at least one wedge on partial positions, and the positions on the ratchet tips of the first or second one-way ratchet not forming the wedges form convex resisting edges. The ratchet roots of the second or first one-way ratchet are configured with wedge avoiding parts on partial positions, so that when the first and second one-way ratchets mesh each other and the resisting edges of the ratchet tips resist against the ratchet roots, said ratchet tips can be aligned and go into the wedge avoiding parts. | 06-21-2012 |
20130140124 | RATCHET LOAD BINDER WITH REMOVABLE LEVER - A ratchet assembly for a load binder includes a pawl bearing assembly biased between a surface of the pawl and a biased movable element whose movement is actuated by the insertion or withdrawal of the lever. In one position of the movable element, the bearing assembly is urged against the pawl to lock it. In the other position of the movable element, the bearing assembly is allowed to reduce its pressure on the pawl. | 06-06-2013 |
20130248313 | PIN AND PAWL STYLE BI-DIRECTIONAL OVERRUNNING CLUTCH - An overrunning clutch is provided having inner and outer members disposed about a rotational axis with the outer member radially outward of the inner member. The clutch further includes a plurality of pins projecting from one of a radially inner surface of the outer member and a radially outer surface of the inner member. The clutch further includes one or more pawls coupled to one of the inner and outer members. Each of the pawls is movable between an engagement position wherein the pawl is engaged with one of the pins to transmit torque between the inner and outer members and a disengagement position wherein the pawl is disengaged from the pin to permit relative rotation of the inner and outer members. In one embodiment, different pawls assume their respective engagement position depending on the rotational direction of the one member. | 09-26-2013 |
20140027234 | AUTO-REBOUND SWITCHING APPARATUS AND THE SWITCHING METHOD THEREOF - An auto-rebound switching apparatus has: a body provided with a water-separating apparatus, an upper cover rotatably arranged on the rear side of the body, a passive disc rotatably arranged between the rear side of the body and the upper cover, a clutch mechanism comprising a bi-directional ratchet gear and a bi-directional pawl matching the ratchet gear, the ratchet gear being rotatably arranged on the rear side of the body and transmissively connected to the water-separating apparatus, thus allowing the ratchet gear, when rotating, to drive the water-separating apparatus into motion to allow switching, the bi-directional pawl, the upper cover, and the passive disc being interconnected, allowing the upper cover to rotate relative to the passive disc thus driving the bi-directional pawl to move between a forward rotation position, a reverse rotation position, and a detached position, and a rebound apparatus. | 01-30-2014 |
20140202820 | SELECTABLE ONE-WAY TORQUE TRANSMITTING DEVICE USING CONTROL RAIL - A torque transmitting device for use in an automotive transmission is provided. The device includes a first annular race and a second annular race disposed concentrically around the first annular race. First and second locking elements are pivotally connected to one of the first and second annular races. The first locking element is moveable to rotationally fix the first annular race to the second annular race in a first rotational direction to transfer torque therebetween. The second locking element is moveable to rotationally fix the first annular race to the second annular race in a second rotational direction to transfer torque therebetween, where the second rotational direction is opposite the first rotational direction. A control rail is disposed adjacent to the first and second annular races. The control rail has indentations formed therein and is moveable to allow the torque transmitting device to be selectively engaged. | 07-24-2014 |
20140291100 | ELECTROMAGNETIC ACTUATOR FOR A BI-DIRECTIONAL CLUTCH - A bi-directional clutch is provided having inner and outer members disposed about a rotational axis. One or more pawls are coupled to one of the members and configured for rotation about separate rotational axes. One end of each pawl moves between first and second engagement positions with corresponding engagement surfaces formed in the other member and a position of disengagement with the other member permitting relative rotation of the inner and outer members. A pair of magnets are disposed at the opposite end of each pawl with each magnet in the pair defining a pole adjacent the end of the pawl and the poles having opposite polarity. An electromagnetic actuator selectively generates electromagnetic fields of different polarities to urge the pawls away from the position of disengagement to one of the engagement positions to cause rotation of the other member in either rotational direction. | 10-02-2014 |
20150060222 | Actuator for Multi-Mode Clutch Module - A transmission clutch module including inner and outer races, a plurality of race engaging pawls and an actuator ring incorporates an actuator having a rotatable spool header adapted to rotate an attached actuator lever between at least two angular positions. The actuator lever moves the actuator ring to selectively block the pawls so inner and outer races may freewheel relative to one another in at least one operating mode. The actuator may be electric or hydraulic powered, and may be spring-biased to a default position in event of power failure. An elongated axially moveable plunger is secured to and supported within a piston at a first end, and has a radially extending pin at its second end. A fixed spool sleeve to which the spool header is supported includes a helical slot through which the pin extends. As the plunger moves reciprocally, the pin undergoes both translational and rotational movement. | 03-05-2015 |
20150377306 | ELECTRIC ACTUATOR MODULE FOR SELECTABLE CLUTCH - A clutch module which includes a first rotating member including at least one strut actuation module and a second engaged member including cam surfaces thereon for engagement by said strut actuation module. The strut actuation module includes a frame with a strut pivotally movable with respect to the frame. The strut includes an engagement end and a base end including a first side and a second side thereof. A pin or post portion extends from the frame and has an insulated bobbin with an energizable coil surrounding the bobbin. A U-shaped member including a pair of actuation legs is attached to the pin member and forms a magnetic gap between the base end of the strut and peripheral ends of the legs, such that when the coil is energized the peripheral ends of the legs are polarized in a first polarity and the frame and the strut are polarized with an opposite polarity thereby biasing the strut toward the peripheral ends and pivoting the actuation end into engagement with a cam surface of the engagement member. | 12-31-2015 |
20160069400 | Variable Two-Way Over-Running Clutch - A clutch assembly is provided that includes a first shaft, a second shaft, a housing, a two-way over-running clutch, and a friction clutch assembly. The two-way over-running clutch includes an inner race and an outer race. At least one torque transmitting member is disposed between the inner race and the outer race that selectively transfers torque from the inner race to the outer race. The inner race defines at least one cam that receives the torque transmitting member. An inner race actuator selectively controls lock-up of the two-way over-running clutch by moving the inner race relative to the first shaft and the outer race between a concentric position and at least one eccentric position. | 03-10-2016 |
20160160942 | SELECTABLE ONE-WAY CLUTCH - An SOWC configured to prevent an unintentional engagement is provided. A pawl comprises a strut that is pushed up toward a notch through an aperture of a selector plate, a stopper plate protruding laterally from a rear end side of the strut, and a first inclined face formed on the stopper plate to incline downwardly from the rear end side toward the leading end side of the strut. A side plate is formed along each long side of the aperture to protrude toward the pocket plate, and the second inclined face is formed on the side plate to be brought into contact to the first inclined face. | 06-09-2016 |
192430200 | Slidable pawls | 3 |
20090145714 | Load-Torque Lock - The invention relates to a load-torque lock ( | 06-11-2009 |
20090194381 | METHOD AND APPARATUS FOR CONTROLLING A SELECTABLE ONE-WAY CLUTCH IN AN ELECTRO-MECHANICAL TRANSMISSION - A selectable one-way clutch includes a strut plate co-annular to a slide plate and a notch plate. The selectable one-way clutch is configured to transfer torque between a strut plate and a notch plate in a first direction when a displacement actuator moves a pin and a slide plate to a first position. The selectable one-way clutch is configured to disengage the strut plate from the notch plate when the displacement actuator moves the pin and the slide plate to the second position. | 08-06-2009 |
20130180817 | Driving End of Tool - A driving end of a tool includes a body including a chamber and a bore. The chamber includes first and second pawls disposed therein. A first engaging member is rotatably disposed in the chamber and defines a first engaging section with a plurality of teeth. A second engaging member is rotatably disposed in the chamber and defines first and second engaging areas. The first engaging section is engaged with the first engaging area. The first and second engaging areas are selectively engaged with the first and second pawls. A switch includes an activating member inserted through the bore and received in the second engaging member and operably rotatable to first and second positions selectively. | 07-18-2013 |
192044000 | Ball or roller | 11 |
20080210508 | Axle disconnect assembly with directional roller clutch - An axle disconnect assembly comprises a shaft extending axially along a central axis, a universal joint including an outer drive member having a substantially annular axial flange extending axially outwardly from the outer drive member coaxially with the central axis so as to form an annular space between the axial flange and the shaft, and a directional roller clutch disposed in the annular space. The directional roller clutch is provided for selectively drivingly coupling the shaft to the outer drive member of the universal joint. The directional roller clutch includes a plurality of rolling elements provided between the outer and inner race members. The rolling elements of the directional roller clutch radially support the outer drive member of the universal joint for rotation about to the shaft. | 09-04-2008 |
20100072017 | RELEASEABLE ONE-WAY CLUTCH | 03-25-2010 |
20100126818 | BI-DIRECTIONAL COUPLING WITH AXIAL DISENGAGEMENT - Example aspects of the present invention comprise two concentric rings, the rings movable relative to each other and defining a clearance between them for receiving at least one ball. The first ring is a coupling member, the second ring is a tubular slipper with a friction surface on the far side of the clearance, and the ball contacts the coupling member to the tubular slipper. At least one ring has a first recess with side walls for receiving the least one ball, and the friction surface is configured to displace in a radial direction when the at least one ball is axially aligned with the first recess and forced to run up the side walls by rotating the rings relative to one another. In an example embodiment of the invention, the first recess is a calotte. | 05-27-2010 |
20110259697 | Switchable free-wheel device for a transmission, particularly for a crank-cvt of a motor vehicle - A switchable free-wheel device for a transmission for a crank-driven CVT of a motor vehicle. The device includes at least one free-wheel unit with a drivable outer ring, an inner ring in the form of an output shaft, and clamping bodies disposed between the rings and rotatable about their longitudinal axes. In the axial direction, each of the clamping bodies includes first and second grooves that are axially spaced from each other and offset relative to each other in the peripheral direction of the clamping body. Annular worm springs surrounding the clamping bodies are displaceable in the axial direction of the body by a switching mechanism, such that the springs engage either in the first groove or in the second groove. The clamping body rotates about its longitudinal axis such that the force applied by the worm spring runs on a side of the longitudinal axis. | 10-27-2011 |
20120043174 | OVERRUNNING BI-DIRECTIONAL CLUTCH AS GEAR SYNCHRONIZER AND COUPLER - The over-running bi-directional clutch is used to synchronize gears in a transmission to allow for locking and unlocking the gears in an efficient manner. | 02-23-2012 |
20130008755 | Clutch Capable of Force Transmission in a Selected One of Two Directions - A clutch includes a drive body disposed in a hollow base and having a plurality of force-bearing surfaces each cooperating with the hollow base to define an accommodating space therebetween. A clutching component is received in the accommodating space, and abuts against the hollow base and the force-bearing surface at first and second contact points, respectively. An angle between two lines, passing respectively through the first and second contact points and intersecting at a center of the clutching component, is greater than 160° and smaller than 180°. A ratio of a maximum distance between the inner annular surface and the force-bearing surface to a cross-sectional dimension of the clutching component is greater than 1 and smaller than 1.1. | 01-10-2013 |
20130112520 | Bi-Directional Overrunning Clutch Having Split Roll Cage - A bi-directional overrunning clutch includes a housing and a pair of hubs substantially coaxially aligned within the housing. A pair of roll cages position a plurality of rollers between each hub and an inner cam surface of the housing. The rollers are positioned to wedge between the hub and the inner cam surface when one of the hub and the housing is rotated with respect to the other. End caps are attached to the housing adjacent to the hubs. A friction disk mechanism includes a friction plate rotating in combination with each the roll cage and a spring compressed between the end cap and the roll cage for biasing the friction member into frictional contact with the hub. An intermittent coupler is located between each roll cage and configured to engage the roll cages so as to permit indexing of one roll cage relative to the other. | 05-09-2013 |
20130206530 | ANTI BACK-DRIVE COUPLINGS - An anti back-drive coupling ( | 08-15-2013 |
20130220759 | Electromagnetically-Actuated Direction-Sensing Roller Clutch - A roller clutch includes an outer race, an inner race, a first engagement member situated between the outer race and the inner race, a second engagement member situated between the outer race and the inner race, and an electromagnetic mover to be energized or de-energized. The first engagement member is configured to engage the outer race and the inner race to transmit torque between the outer race and the inner race in response to the electromagnetic mover being energized and the inner race applying negative torque to the second engagement member while the outer race applies positive torque to the second engagement member. The second engagement member is configured to engage the outer race and the inner race to transmit torque between the outer race and the inner race in response to the inner race applying positive torque to the second engagement member while the outer race applies negative torque to the second engagement member. | 08-29-2013 |
20140131157 | RATCHET PULLEY - A ratchet pulley includes a housing, a hub, an annular pulley and a selection device. The housing has two openings for a rope to go into and go out of the housing. The hub is received in the housing and reciprocally movable between an upper position and a lower position. The annular pulley is received in the housing and rotatable on the circumference of the hub. The rope is wound over the annular pulley. The selection device is disposed in the internal space of the hub and has a rotatable rod exposed to outer side for selecting whether the rotational direction of the annular pulley is limited or not limited or is limited when the rope is pulled and the annular pulley is loaded. | 05-15-2014 |
20140345999 | ROTATION TRANSMISSION DEVICE - A rotation transmission device is configured such that when an electromagnet of an electromagnetic clutch is energized, a control retainer of a two-way clutch is moved in the axial direction, so that the control retainer and a rotary retainer rotate relative to each other in the direction in which the circumferential widths of pockets decrease, thereby disengaging pairs of rollers from an outer ring and an inner ring. A spring holder is provided which is fixed to an input shaft and kept in abutment with an axial end surface of the inner ring to prevent relative rotation between the control retainer and the rotary retainer in the direction in which the circumferential widths of the pockets decrease, from the neutral position of the rollers. The spring holder is prevented from axial movement to prevent untimely engagement of the two-way clutch. The inner ring is integral with the input shaft. | 11-27-2014 |