Entries |
Document | Title | Date |
20080261738 | CHAIN TRANSMISSION SYSTEM - A chain transmission system having a drive sprocket, a driven sprocket, a chain having a front side engaging teeth on the drive sprocket and teeth on the driven sprocket, and a rotary wheel having rubber outer surface. A backside of the chain engages the rubber outer surface of the driven wheel. | 10-23-2008 |
20080293530 | OIL PUMP DRIVING MECHANISM - When an engaging pawl | 11-27-2008 |
20090042679 | ASSEMBLY OF TOOTHED WHEELS FOR A BICYCLE - An assembly of toothed wheels of a bicycle has at least two toothed wheels of different diameter and at least one support member of at least one toothed wheel of the at least two toothed wheels on a component of a bicycle, like for example a free body of a hub for a rear bicycle wheel. The at least one support member is at least partially housed in at least one cavity of at least one other toothed wheel of the at least two toothed wheels. In this way, the distance between the toothed wheels is lower than the thickness of the support member of the toothed wheels themselves. The support member can thus maintain a strong resistant section at the attachment area to the respective toothed wheel. At the same time, it is possible to mount a greater number of sprockets on a free body of standard size. | 02-12-2009 |
20090093328 | Toothed belt pulley - The invention describes a belt pulley ( | 04-09-2009 |
20090111631 | Bicycle chain rings with ramps - Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps, tapers and profiled teeth for improved shifting performance. Additional embodiments of the bicycle chain rings of the present invention may be configured with one or more additional features formed within the chain rings including a transition slide, a tapered ramp face, a ramp bridge, a ramp lead, a trailing transition slide and a wear pin. | 04-30-2009 |
20090143178 | SHOCK ABSORBING STRUCTURE IN IDLER - A shock absorbing structure in an idler in which the shock of first abutment of a roller in a roller chain in a case where the roller engages with an idler sprocket, is absorbed or reduced The structure has an idler | 06-04-2009 |
20090191996 | COGSET ASSEMBLY FOR A BICYCLE - A bicycle hub assembly comprises a shaft, a first load bearing adjacent said shaft, a hub main body surrounding said shaft, and a cogset. The cogset can define an inner surface, and the inner surface can define a seat configured to receive the first load bearing. Further, the inner surface can define an opening of variable size. The cogset can also define an inner end and an outer end, and the opening can generally increase in size from the outer end to the inner end. | 07-30-2009 |
20090191997 | ROTATING DISC - The form of a tooth profile for a rotating disc ( | 07-30-2009 |
20090286639 | SPROCKET FOR CHAIN - A sprocket for a chain drive using a roller or bushing chain has a plurality of different pitch angles, including both pitch angles larger than the standard pitch angle, and pitch angles smaller than the standard pitch angle. The number of pitch angles in the sprocket larger than the standard pitch angle is greater than the number of pitch angles in the sprocket smaller than the standard pitch angle. The sprocket teeth are integrally molded with the sprocket by sintering. | 11-19-2009 |
20100081530 | SLEEVED SPROCKET TEETH - A gear with a solid metal sleeve for its outer tooth profile is provided. The gear additionally has an inner body of sintered powder metal. | 04-01-2010 |
20100151978 | Tension-Reducing Random Sprocket - A sprocket is provided having a plurality of teeth around its circumference. Adjacent teeth are separated by roots each having a root radius defined as the distance between the center of the sprocket and a point along the root closest to the sprocket center in a radial direction. In one aspect of the invention, the sprocket comprises at least two different root radii arranged in a pattern effective to redistribute tensions imparted to a chain by the sprocket at one or more predetermined sprocket orders. | 06-17-2010 |
20100184547 | Debris ejecting sprocket and system - A debris ejecting sprocket comprising a body ( | 07-22-2010 |
20100273592 | SNAP TOGETHER SPLIT SPROCKET - Described herein is a sprocket for interfacing with a perforated material, such as a chain. The sprocket includes a hub and a material-interfacing plate. The hub is shaped to fit around an axially extending shaft, and includes a plurality of hub portions each shaped to fit around a portion of the shaft; and a retaining portion and a hub interlocking portion, each disposed on at least one of the hub portions. The material-interfacing plate has a periphery that is shaped to interface with the perforated material, and includes a plurality of plate portions each shaped to fit around a portion of the hub; and a plate interlocking portion shaped to interlock with the hub interlocking portion and disposed on at least one of the plate portions. The material-interfacing plate is in a secured position when the plate interlocking portion and the hub interlocking portion are interlocked with each other. The interlocked plate and hub interlocking portions prevent the material-interfacing plate from sliding radially off the hub and the retaining portion prevents the material-interfacing plate from sliding axially off the hub when the material-interfacing plate is in the secured position. | 10-28-2010 |
20110092326 | PULLEY FOR USE WITH TOOTHED BELT - The invention provides a toothed-belt pulley that is capable of reducing pneumatic and plosive sounds and of reducing engagement noises while stably transmitting rotational movements by suppressing widthwise wobbling of a toothed belt and while reducing a manufacturing cost of the pulley by simplifying its manufacturing process and of improving a production yield by shortening its manufacturing time. The toothed-belt pulley has a disk whose inner circumference is fittingly attached to a rotary shaft and which is provided with teeth to be engaged with the toothed belt around the outer circumference and flanges erected on the both outer sides of the toothed belt, wherein each of the teeth has a concaved recess with which the toothed belt deformably engages in the widthwise center part thereof. | 04-21-2011 |
20110312456 | Bicycle Sprocket - A bicycle sprocket comprises a sprocket body and a plurality of angularly equidistant teeth extending radially and outwardly from an outer periphery of the sprocket body. The sprocket body has a plurality of bottom edges along the outer periphery. The bottom edges extend in a generally circumferential direction of the sprocket body. Each of the bottom edges is connected between two adjacent ones of the teeth. The central points of the bottom edges include at least first and second groups of the central points. Each of the first group of the central points is spaced apart from the center of the sprocket body by a first distance. Each of the second group of the central points is spaced apart from the center of the sprocket body by a second distance that is smaller than the first distance. The difference between the first and second distances is smaller than 2 mm. | 12-22-2011 |
20110312457 | Sprockets Made of Two Materials with Half Holes on the Edge of Central Portion - The present sprocket wheel invention enhances the efficiency of the sprockets made of two materials, e.g., a lighter material at central portion of the sprocket and a hard material at peripheral portion of the sprocket comprising teeth, by drilling half holes on the outer edge of the central portion and half holes on the inner edge of the peripheral portion of the sprocket. In the preferred embodiment, half of the thickness of the sprocket is the entire hole on the peripheral portion of the sprocket with harder materials, and the other half of the thickness of the sprocket is designed to have said half holes for rivets to attach the central portion and the peripheral portion of the sprocket. | 12-22-2011 |
20120214629 | Bicycle Sprocket - A bicycle sprocket includes a sprocket body having a plurality of bottom edges along an outer periphery thereof, and a plurality of teeth. The bottom edges extends in a generally circumferential direction of the sprocket body. Each of the bottom edges is connected between two adjacent ones of the teeth. The central points of the bottom edges includes a first group of central points each spaced apart from the center of the sprocket body by a first distance, and a second group of central points each spaced apart from the center of the sprocket body by a second distance smaller than the first distance. The sprocket body further has a direction guiding groove extending inwardly from the outer periphery, permitting passage of a chain pin, and adjacent to the first group of the central points. | 08-23-2012 |
20120220401 | CAM SPROCKET AND METHOD FOR MANUFACTURING THE SAME - A cam sprocket according to the present invention includes a ring-shaped plate portion having external teeth along its outer circumference; a circular plate portion that is disposed at the radially inner region substantially parallel to the ring-shaped plate portion and at a level difference in axial direction to the ring-shaped plate portion, the circular plate portion being abuttable against one end face in axial direction of the cam shaft; and a tapered portion linking the circular plate portion to the ring-shaped portion at a radially intermediate region. The tapered portion is provided with a plurality of punched portions whose radially inner faces are provided with a partial circular arc shape so as to come into area contact with an outer circumferential surface at the one end face in axial direction of the cam shaft. | 08-30-2012 |
20120309571 | CLUTCH SHAFT, ACTUATOR, CAMSHAFT ADJUSTMENT TRANSMISSION AND CAMSHAFT CONTROLLER - A clutch shaft for a camshaft controller having at each of two ends ( | 12-06-2012 |
20130059689 | CUSHIONING STRUCTURE FOR A SPROCKET - To reduce operating noise and further improve durability in a cushioning structure for a sprocket used in a roller chain or bush chain. MEANS OF RESOLUTION Annular first and second cushion rings | 03-07-2013 |
20130116074 | Sprocket wheel for bicycle - A sprocket wheel includes a number of supporting devices extended radially and inwardly from an outer peripheral rim, the supporting devices each include two protrusions extended radially and inwardly from the rim and offset from a center portion of the rim, and each of the protrusions include a number of levers for forming a number of spaces between the levers and include an inner end portion having an orifice formed therein, the inner end portions of the protrusions of each of the supporting devices are contact with each other, and the protrusions of the supporting devices are arranged in a stagger way relative to each other for suitably increasing the strength of the sprocket wheel and for dissipating the force to be applied to the sprocket wheel. | 05-09-2013 |
20130143703 | TOOTHED BELT WHEEL - The present invention relates to a toothed belt wheel ( | 06-06-2013 |
20130184109 | SPROCKET MOUNTING CARRIER FOR A BICYCLE - A sprocket mounting carrier has a cylindrical body which on the outside is provided with grooves extending in axial direction. The sprocket mounting carrier has such a shape that both sprockets of a first type and sprockets of a second type can be slid onto it. These sprockets each have a central hole whose bounding wall has cams. The bottoms and side walls of the grooves of the sprocket mounting carrier, in the event of sprockets being present on the sprocket mounting carrier, engage with the cams of the sprockets, so that the sprockets are secured to the sprocket mounting carrier both in radial direction and in tangential direction. | 07-18-2013 |
20130184110 | Chainring - A solitary chainring of a bicycle front crankset for engaging a bicycle drive chain, including a plurality of teeth formed about a periphery of the chainring. One or more clearance chamfer surfaces are formed on the chainring body, each of the chamfer surfaces substantially centered between adjacent pairs of the plurality of teeth. | 07-18-2013 |
20130345005 | Anti-Detachment Chainwheel having Forced Recessed Face at Chain Tooth Root Portion - The present invention provides a novel anti-detachment chainwheel having forced recessed face at chain tooth root portion, in which a chain roller ( | 12-26-2013 |
20140135160 | TOOTHED WHEEL - The invention relates to a method for producing a toothed wheel ( | 05-15-2014 |
20140243133 | Cantilevered Boom Sprocket - A trencher boom sprocket having a hub body rotatable at an engagement point by the shaft, a plurality of teeth supported on the hub body, an excluder ring supported within the hub body on the first side, at least one O-ring provided between the hub body and the excluder ring and applying a spring-load to the excluder ring, a cap supported within the hub at the second side to substantially seal the second side of the hub, a bearing disposed between the shaft and the hub between the engagement point and the second side, and a spacer disposed between the bearing and the cap. | 08-28-2014 |
20140274517 | TRANSMISSION ASSEMBLY FEATURING ONE-WAY NEEDLE BEARINGS FOR ENGINE- AND HUMAN-POWERED VEHICLES - A transmission assembly for a human- and/or motor-powered vehicle, including a hollow transfer shaft, first and second inner one-way needle bearings, the first inner one-way needle bearing disposed within a first hollow end of the transfer shaft, and the second inner one-way needle bearing disposed within a second hollow end of the transfer shaft; and a first and a second outer one-way needle bearings, each having an inner diameter and an outer diameter, the first outer one-way needle bearing disposed about the outer diameter of the transfer shaft near the first hollow end of the transfer shaft, and the second outer one-way needle bearing disposed about the outer diameter of the transfer shaft near the second end of the transfer shaft, such that the inner diameter of each of the first and second outer one-way needle bearings contacts the outer diameter of the transfer shaft. | 09-18-2014 |
20140274518 | CENTRIFUGAL CLUTCH DRIVE SYSTEM - An apparatus for use with a centrifugal clutch having a drum with a threaded opening. The apparatus includes an output hub having first and second ends, where the first end has threads for engaging the threaded opening of the drum. The hub has a longitudinal axis. The apparatus also includes a sprocket associated with the second end of the hub where the sprocket has a sprocket plane generally perpendicular to the longitudinal axis of the hub. The apparatus includes a ball bearing assembly disposed in an interior surface of the hub where the ball bearing has a bearing plane substantially aligned with the sprocket plane. The apparatus also includes at least one retaining member disposed on one side of the ball bearing assembly to secure the ball bearing assembly along the interior surface of the hub. | 09-18-2014 |
20140274519 | REAR-WHEEL DRIVE - A rear-wheel drive for a bicycle or a trailer bike comprises an output sprocket of a chain drive, a rear-wheel shaft, and a driving mechanism being supported outside to the bicycle frame. The rear-wheel shaft is supported only on one side of the driving in a supporting manner relative to the bicycle frame. The driving mechanism on the side facing the bicycle frame is not, as commonly known, supported relative to the rear wheel shaft but relative to the bicycle frame. That creates the required space for arranging a freewheel clutch, that fulfills the strength requirements for transmitting the occurring torques even when using sprockets with only a few teeth. Thus, short distances between the rear wheel and the bottom bracket and single-arm suspensions in the bicycle frame can be implemented together with the implementation of suitable developments of the chain drive for small running wheels. | 09-18-2014 |
20140309066 | CHAINWHEEL FOR MULTI-SIZE CRANK MODULES - A chainwheel has a chainwheel body, a first combining hole set and a second combining hole set. The chainwheel body has a center point. The first combining hole set has multiple first combining holes that are formed through the chainwheel body. The first distances between the first combining holes and the center point are equal. The second combining hole set has multiple second combining holes that are formed through the chainwheel body. The second distances between the second combining holes and the center point are equal. The second distance is longer than the first distance. Therefore, the chainwheel can be combined with crank modules of different sizes by the first combining holes and the second combining holes. | 10-16-2014 |
20140342864 | CHAIN DRUM LOCKING MECHANISM FOR MANUAL ROLLING DOOR OPERATOR - A stationary base plate, a chain drum locking mechanism and a reducer mechanism are provided for a manual rolling door operator, in which the reducer mechanism has an output shaft and the chain drum locking mechanism has a chain drum, a wedge wheel, a drive shaft, a plurality of moving rollers, and fixed rods. If the chain drum is rotated in any direction by a force pulling a chain run around the chain drum, the fixed rods push against the moving rollers to release a wedging action from the wedge wheel which simultaneously renders the drive shaft to be rotated. However, if the force stop to pull the chain, the wedge wheel locks the moving roller by the wedging action due to the weight of a curtain of slats so as to stop the rotation of the drive shaft. | 11-20-2014 |
20140371014 | Bicycle Chain Rings with Ramps - Disclosed are bicycle chain rings for bicycles having specially shaped ramps with lifting surfaces for improved up-shifting performance. Additional embodiments of the bicycle chain rings of the present invention may be configured with one or more additional features formed within the chain rings including a transition slide, a tapered ramp face, a ramp bridge, a ramp lead, a trailing transition slide and a wear pin. | 12-18-2014 |
20150018150 | LAMINATED SPROCKET ASSEMBLY - A laminated sprocket assembly is provided formed of a plurality of layers that are connected together. Each of the layers is a stamped sheet metal layer having a plurality of spaced apart teeth located around a periphery thereof. The teeth in the plurality of connected layers are aligned. At least one of voids, channels, openings, or recesses are located in or between at least some of the layers for receiving and holding lubricating oil. This reduces noise and wear. | 01-15-2015 |
20150094179 | BICYCLE SPROCKET - A bicycle sprocket comprises a sprocket member. The sprocket member includes an annular base portion, sprocket teeth, and a closed tooth opening. The sprocket teeth are configured to protrude radially outwardly from the annular base portion. The sprocket teeth are arranged in a circumferential direction of the annular base portion. Each of the sprocket teeth has a tooth bottom defining a root circle of the sprocket teeth. The closed tooth opening is at least partly positioned radially outwardly from the root circle. | 04-02-2015 |
20150133248 | V-PULLEY - A V-pulley includes a pulley body having a through hole provided at the center. Wheels are connected on the pulley body. An outer wheel is provided at each of two ends of the pulley body. Coaxial annular gears and annular inner wheels are alternately arranged between the two outer wheels. The diameter of a gear is less than that of an inner wheel. The outer wheels, the gears, and the inner wheels are fixedly connected through a connecting structure. The outer circumferential surfaces of the gears have meshing teeth disposed at an interval in a convex-concave manner. Two adjacent wheels and a gear between them form a V-belt groove. The opposite end surfaces of the two adjacent wheels form friction transmission belt groove side surfaces. The gear between the two adjacent wheels forms a mesh transmission gear. The belt groove side surfaces are inclined smooth surfaces. | 05-14-2015 |
20150291255 | BICYCLE SPROCKET - A bicycle sprocket comprises sprocket teeth. The sprocket teeth include a first tooth and a second tooth. The first tooth has a chain-engaging axial width which is larger than a first distance defined between opposed inner link plates of a bicycle chain and which is smaller than a second distance defined between opposed outer link plates of the bicycle chain. The second tooth has a chain-engaging axial width which is larger than the first distance and which is smaller than the second distance. The first tooth and the second tooth are spaced apart from each other in a circumferential direction of the bicycle sprocket to define a space which is free of a tooth configured to engage with the bicycle chain. | 10-15-2015 |
20150337943 | BICYCLE SPROCKET - A bicycle sprocket comprises sprocket teeth. The sprocket teeth include at least one first tooth and at least one second tooth. The at least one first tooth has a first radial-tooth height. The at least one first tooth has a first chain-engaging axial width which is smaller than a first distance defined between opposed outer link plates of a bicycle chain and which is larger than a second distance defined between opposed inner link plates of the bicycle chain. The at least one second tooth is adjacent to the first tooth and is disposed on a downstream side in a rotational driving direction of the bicycle sprocket. The at least one second tooth is configured to engage with inner link plates of the bicycle chain. The at least one second tooth has a second radial-tooth height. The first radial-tooth height is greater than the second radial-tooth height. | 11-26-2015 |
20150362057 | Clad Chainring - A bicycle chainring, including a generally annular body formed of at least an inner material, the inner material including a first side and a second side opposite the first side and a plurality of teeth disposed about a periphery of the body. At least some of the plurality of teeth are formed of both the inner material and an outer material, the outer material disposed on one or both of the first and second sides, the outer material having a greater wear resistance relative to the inner material and a thickness greater than 0.1 millimeter. | 12-17-2015 |
20160053882 | BICYCLE SPROCKET - A bicycle sprocket has a rotational center axis. The bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, and at least one chain-supporting portion. The plurality of sprocket teeth are circumferentially arranged on an outer periphery of the sprocket body. The at least one chain-supporting portion is configured to contact one of inner link plates of a bicycle chain without engaging with the bicycle chain at inner link spaces each defined between a pair of inner link plates that face each other in an axial direction parallel to the rotational center axis. The at least one chain-supporting portion is offset from the sprocket teeth in the axial direction. | 02-25-2016 |
20160069445 | DEMOUNTABLE COUPLING SYSTEM AND APPARATUS - Example embodiments are related to a wheel coupling system for a vehicle. The wheel coupling system according to example embodiments may include a torque transmission element having a rotatable member to generate a torque force and a torque receiver for releasably engaging the torque transmission element. The wheel coupling system may further include a wheel coupled to the torque receiver such that removal of the wheel disengages the torque receiver from the torque transmission element to allow the torque transmission element to remain intact. | 03-10-2016 |
20160152415 | CHAIN DRIVE FOR LINK CHAINS OF MINING CONVEYORS OR MINING EXTRACTION MACHINES | 06-02-2016 |