| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 474158000 | And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member | 62 |
| 20080300078 | POWER TRANSMISSION DEVICE OF CLUTCHLESS COMPRESSOR - The present invention relates to a power transmission device of the clutchless compressor, which includes: a pulley; a hub disposed in one side face of the pulley and connected to a driving shaft of a compressor; a drive-side connection member including a connection portion detachably connected to one side face of the pulley and a breaking portion connected to the connection portion and broken when a torque above a preset value is generated in the compressor; and a driven-side connection member connected to one side face of the hub and is connected to the breaking portion and including a plastic deformation portion outside the driven-side connection member so that the driven-side connection member is plastic deformed or is broken due to plastic deformation if a rotational shock is applied from the connection portion to a remaining breaking member remaining even after the breaking portion is broken. | 12-04-2008 |
| 20090270211 | COAXIAL TRANSMISSSION AND TURNING STRUCTURE - The present invention discloses a coaxial transmission and turning structure, which uses dynamic force of a hand-held electric tool having an output head to drive a working platform. In the present invention, a fixed sleeve is joined to the working platform fixedly. A bearing sleeve is rotatably accommodated inside the fixed sleeve. A torsion rod is rotatably installed inside the bearing sleeve. A fixing brace is secured on the top of the bearing sleeve and used to hold the hand-held electric tool. Thereby, one end of the torsion rod is able to engage with the output head of the hand-held electric tool. The other end of the torsion rod uses a transmission mechanism installed in the other end of the bearing sleeve to drive a driving wheel installed in the bearing sleeve to rotate. Thereby, the present invention can drive the working platform to move. | 10-29-2009 |
| 20110124454 | Power Transmission Mechanism for an Electric Bicycle - A power transmission mechanism | 05-26-2011 |
| 20130150194 | CRANKSET FOR A MOTORIZED CYCLE - A crank set for a bicycle includes a free-wheeling device having holes for attaching chain rings. The holes include two separate circular bolt hole patterns L | 06-13-2013 |
| 20150360749 | BICYCLE SPROCKET - A bicycle sprocket comprises a first member and a second member. The first member comprises a plurality of first teeth and a first body. The first body includes a plurality of first arms arranged in a circumferential direction of the bicycle sprocket. The second member comprises a plurality of second teeth and a second body. The second body includes a plurality of second arms arranged in the circumferential direction. The second member is configured to be attached to the first member so that an interior cavity is provided between the first member and the second member. The interior cavity is at least partially provided between at least one of the first arms and at least one of the second arms facing the at least one of the first arms in a state where the second member is attached to the first member. | 12-17-2015 |
| 20160059931 | BICYCLE SPROCKET AND BICYCLE SPROCKET ASSEMBLY - A bicycle sprocket having a rotational center axis comprises a sprocket body and a chain engagement structure. The sprocket body is rotatable about the rotational center axis. The chain engagement structure includes an upshifting facilitation area configured to facilitate upshifting. The chain engagement structure includes a plurality of chain-engaging teeth configured to engage with a bicycle chain. The plurality of chain-engaging teeth includes at least three upshifting facilitation teeth configured to facilitate upshifting. The at least three upshifting facilitation teeth are adjacent to each other without another tooth between the at least three upshifting facilitation teeth. The at least three upshifting facilitation teeth are provided in the upshifting facilitation area. | 03-03-2016 |
| 474160000 | Coaxial surface is belt-engaging surface on positive drive pulley of different circumference | 56 |
| 20080207369 | BICYCLE CRANKSET WITH TWO CHAINRINGS - The bicycle crankset includes a bottom bracket axle, two cranks and a chainring carrier bearing first and second different toothed chainrings. The chainring carrier has the shape of a star, of which each arm is provided with a mounting hole aligned with a mounting hole in the first and second chainrings respectively. These holes accommodate elements for fastening chainrings to the chainring carrier, and they are arranged on a first circle with a predetermined diameter. Each arm of the chainring carrier is provided with a second mounting hole arranged on a second circle with a diameter that has been reduced relative to the first circle to match the chainring carrier to two other toothed circular chainrings with a size that is respectively reduced relative to the first and second chainrings and of which the mounting holes are located on the second circle. | 08-28-2008 |
| 20090042680 | MOTION TRANSMISSION SYSTEM OF A BICYCLE - A sprocket assembly mounted to a hub has at least eleven sprockets. The hub is able to rotate about a rotation axis and has a plurality of spoke attachment seats and a fastening portion to a frame of the bicycle. On the hub a predetermined axial distance is defined between a plane, substantially perpendicular to the rotation axis, comprising the points of the spoke attachment seats closest to the freewheel body and a plane, substantially perpendicular to the rotation axis and defined in the fastening portion to the frame, comprising the attachment points to the frame closest to the freewheel body. All of the sprockets of the sprocket assembly, when associated with the freewheel body, have an overall axial width that is lower than or equal to the predetermined axial distance. The chain has a maximum thickness between 4.6 mm and 5.8 mm. | 02-12-2009 |
| 20090042681 | SET OF SPROCKETS FOR A BICYCLE REAR WHEEL AND SPROCKET ASSEMBLY COMPRISING SUCH A SET - A set of sprockets has a first sprocket with a greater diameter, at least one second sprocket with a smaller diameter and one or more spacer elements operatively arranged between, and in abutment with the sprockets. At least one of the aforementioned sprockets and spacer elements has engagement portions with a freewheel body of a hub of a bicycle rear wheel, the engagement portions defining an ideal circumference for coupling with the freewheel body. The first sprocket rests against the second sprocket, through at least one of the one or more spacer elements, at at least one first contact point arranged at a first radial distance with respect to a longitudinal rotation axis, and at least one second contact point arranged at a second radial distance from the longitudinal rotation axis. The radial distance between the first contact point and the second contact point is at least equal to ⅓ of the radial extension between the circumference and a radially outer end of the second sprocket. | 02-12-2009 |
| 20090042682 | SPROCKET MODULE FOR A BICYCLE AND SPROCKET ASSEMBLY COMPRISING SUCH A MODULE - A sprocket module for a bicycle has at least two sprockets fixedly coupled one another. At least one first sprocket of the at least two sprockets comprises engagement portion to a freewheel body of a hub for a bicycle rear wheel. A second sprocket of the module lacks the engagement portion and is supported on the freewheel body through the aforementioned at least one first sprocket. The module allows strong and low-weight sprocket assemblies to be made. | 02-12-2009 |
| 20090082147 | Multi-Speed Sprocket Assembly - A multi-speed sprocket assembly is provided for engaging a bicycle chain displaceable by a derailleur. The multi-speed sprocket assembly generally includes at least one smaller sprocket and at least one larger sprocket. The larger sprocket includes first and second transitional segments for alternatively receiving a shifting chain segment of the bicycle chain shifting from the smaller sprocket to the larger sprocket. The first transitional segment includes a first run-on ramp configured to receive an outer link plate of the shifting chain segment. The first run-on ramp has a first support point configured to bend the transferring bicycle chain at a first angle to position a first chain roller against a no-load tooth flank of the larger sprocket while a second chain roller rests against a load tooth flank of the smaller sprocket. The second transitional segment includes a second run-on ramp configured to receive the outer link plate of the shifting chain segment. The second run-on ramp has a second support point configured to bend the shifting chain segment at a second angle to position the first chain roller against the no-load tooth flank of the larger sprocket while the second chain roller rests against the load tooth flank of the smaller sprocket. | 03-26-2009 |
| 20090098966 | BICYCLE REAR SPROCKET ASSEMBLY - A bicycle rear sprocket assembly has a sprocket carrier, a first sprocket, a second sprocket and a third sprocket. The first and second sprockets are attached to opposite axial sides of the outer end portion of the attachment member of the sprocket carrier using a common fastener that extends through the first and second attachment portions and the outer end portion of the attachment member. The third sprocket is disposed on adjacent the second sprocket. The second sprocket has a free edge spaced radially inwardly from the common fastener by a distance at least as large as one-half of a maximum transverse dimension of the fastener measured in a direction perpendicular to the rotation axis. At least one space maintaining projection extends axially toward an adjacent one of the second and third sprockets. | 04-16-2009 |
| 20090118046 | Multi-speed bicycle sprocket - An improvement of a multi-speed bicycle sprocket, in which the number of teeth of a tenth sprocket of a rear sprocket assembly is increased to obtain a more laborsaving effect without significantly changing a multi-speed bicycle chain and a rear derailleur. The number of teeth of the tenth sprocket with the maximum outer diameter is increased from 27 teeth to 28 or more than 28 teeth. Preferably, the tenth sprocket has 32 teeth. Therefore, the speed ratio of the tenth sprocket of the rear sprocket assembly to a front sprocket assembly approximates to 1:1 so that a rider or a player may ride the bicycle and/or ride the bicycle uphill in a more laborsaving manner. | 05-07-2009 |
| 20090215565 | Multiple Sprocket Assembly - A multiple sprocket assembly receives a chain and transferring torque therefrom to a rear wheel hub of a bicycle. The multiple sprocket assembly includes a plurality of different-sized, multiple-toothed sprockets arranged coaxially about the rear wheel hub. Each sprocket has a tooth front face facing an adjoining smaller sprocket. A plurality of annular support elements extend between the sprockets, each annular support element including an annular disc having a disc front face facing the adjoining smaller sprocket. The tooth front face of the sprocket has an offset relative to the disc front face of the annular disc. | 08-27-2009 |
| 20090215566 | Multiple Sprocket Assembly - A multiple sprocket assembly receives a chain and transfers torque therefrom to a rear wheel hub of a bicycle. The multiple sprocket assembly includes a plurality of different-sized multiple-toothed sprockets arranged coaxially about the rear wheel hub. A plurality of annular support elements extend between the sprockets and have a plurality of openings disposed circumferentially on the annular support element. The openings are aligned with tooth gaps of an adjoining smaller sprocket. The sprockets and the annular support elements are configured to transmit torque from the smaller sprocket to a larger sprocket. | 08-27-2009 |
| 20090258740 | TOOTHED WHEEL AND GROUP OF TOOTHED WHEELS FOR A BICYCLE TRANSMISSION SYSTEM - A toothed wheel for a chain transmission system for a bicycle, intended to be coupled with at least one other toothed wheel in a group of crowns or of sprockets rotating as a unit has a plurality of teeth that follow one another on the radially outer periphery of the toothed wheel, alternating with grooves. Each tooth has a thickness, a width and a height and has an idle flank, passive in the exchange of torque with a bicycle chain, and a pressure flank, active in the exchange of torque with the same chain. The toothed wheel has at least one gearshifting helping tooth the height of which, measured from the bottom of an adjacent groove, decreases in the direction of the pressure flank, in any case being greater than or equal to 90% of the radius of the pin. | 10-15-2009 |
| 20100004081 | Multiple Sprocket Assembly - A multiple sprocket assembly for receiving a chain and transferring torque therefrom to a bicycle rear wheel hub rotatable about a hub axis. The chain has alternating pairs of inner and outer link plates connected by chain rollers. The multiple sprocket assembly includes a plurality of different-sized sprockets arranged coaxially about the rear wheel hub. The sprockets have a plurality of teeth and tooth roots spaced around a periphery of the sprockets for engaging the chain. The tooth roots forming a dedendum circle. The sprockets have a maximum sprocket width near the dedendum circle, substantially bridging a gap between paired inner link plates sandwiching the chain roller therebetween, substantially minimizing axial play between a guide area on the sprocket and an overhang of the inner link plates overlapping the guide area when the chain is engaged with the sprockets. | 01-07-2010 |
| 20100009794 | SPROCKET ASSEMBLY - A sprocket assembly includes a first sprocket set having multiple first bores defined therein. A second sprocket has multiple second bores defined therein. A supporter has multiple first fastening bores defined therein and multiple second fastening bores defined therein. The first sprocket and the second sprocket are respectively fixed on two opposite sides of the supporter. Each of the first protrusions is fixed on a corresponding one of the first fastening bores. Each of the second protrusions is fixed on a corresponding one of the second fastening bores. | 01-14-2010 |
| 20100075791 | Multiple Sprocket Assembly - A multiple sprocket assembly configured to be mounted to a wheel hub. The multiple sprocket assembly includes a truncated conical shell having a first opening proximate a small shell base and a second opening proximate a large shell base. The openings are coaxial with a central axis. A plurality of tooth sprockets having different numbers of chain-engaging teeth is disposed on the shell and extends radially of the central axis. A radial load transmitting profile is configured on the shell proximate one of the small and large shell bases. A torque load transmitting profile is configured on the shell proximate the large shell base. The shell, sprockets and the radial and torque load transmitting profiles embody a single piece. A load transfer element is connected to the large shell base to radially support the shell. The load transfer element has a greater number of chain-engaging teeth disposed on an outer periphery thereof and having a larger diameter than a largest sprocket on the shell. | 03-25-2010 |
| 20100081531 | Multi-Speed Sprocket Asssembly - A multi-speed sprocket assembly configured to receive a bicycle chain including a plurality of pairs of inner link plates, a plurality of pairs of outer link plates and plurality of rollers connecting the pairs of inner and outer link plates. The multi-speed sprocket assembly generally includes a smaller diameter sprocket and a larger diameter sprocket rotated about a rotation axis in a driving direction. The smaller and larger diameter sprockets include first and second pluralities of teeth spaced about their peripheries, respectively. The larger diameter sprocket has an inboard side including first and second projections axially extending therefrom. The second projection is disposed circumferentially aft, opposite the driving direction, and radially outwardly of the first projection. The first and second projections simultaneously support one outer link plate as the bicycle chain shifts from the smaller diameter sprocket to the larger diameter sprocket. | 04-01-2010 |
| 20100099530 | Bicycle Cogset - A cogset, which is adapted to connect to a rotatable hub of a bicycle, includes first, second and third cog assemblies. Each cog assembly has at least one cog with which a chain on the bicycle selectively engages in response to bicycle speed changes. Additionally, the first and third cog assemblies have structural contacts with the connected hub of the bicycle, whereas the second cog assembly does not have any structural contact with the connected hub, but the second cog assembly is retained between the first and third cog assemblies in order to connect it to the hub and enable it rotate with the hub stably. | 04-22-2010 |
| 20100137086 | Multiple Sprocket Assembly - A multiple sprocket assembly for a bicycle includes a larger diametrical sprocket and a smaller diametrical sprocket and the larger diametrical sprocket includes at least one auxiliary guiding portion for facilitating a bicycle chain to shift from the smaller diametrical sprocket to the larger diametrical sprocket. | 06-03-2010 |
| 20100279807 | Method For The Production Of A One-Piece Metallic Multiple Wheel, Preform For The Production Thereof, And Multiple Wheel - The invention relates to a method for the production of a one-piece, metal multiple wheel ( | 11-04-2010 |
| 20110053721 | BICYCLE SPROCKET - A bicycle sprocket is provided with a sprocket body and a chain engagement structure. The chain engagement structure includes sprocket teeth defining chain rollers receiving troughs. At least two consecutive ones of the troughs include a driven-side surface and a non-driven-side surface. The driven-side surfaces each have a first chain roller contact points corresponding to a first radius of a first minimum contact circle when one of the chain rollers is positioned to fittingly contact the driven-side surface. The non-driven-side surfaces each have a second chain roller contact points disposed at a second position corresponding to a second radius of a second minimum contact circle when one of the chain rollers is positioned to fittingly contact the non-driven-side surface. The first radius is larger than the second radius. The driven-side surfaces have effective concavities that are equal to or less than the curvatures of the chain rollers. | 03-03-2011 |
| 20110065541 | SPROCKET ASSEMBLY - A sprocket assembly of the present invention includes a first sprocket and a bigger second sprocket. The first sprocket has a small-diametered tooth having a beveled edge. The beveled edge is tapered from a first face to a second face along a transmission direction. The second sprocket has a big-diametered tooth, which is clockwise adjacent to the small-diametered tooth having the beveled edge, having a thinner section. The thinner section is stepped at an outer face of the second sprocket. A chain of a bicycle selectively surrounds the first sprocket or the second sprocket, and a travel path thereof shifts quickly and easily via the beveled edge and the thinner section. | 03-17-2011 |
| 20110092327 | BICYCLE SPROCKET - A bicycle sprocket is provided with a sprocket body and a plurality of sprocket teeth. The sprocket teeth extend radially outward from a root circle of the sprocket body with the sprocket teeth being circumferentially spaced around the outer periphery of the sprocket body. The sprocket teeth include at least one shift assist tooth that assists in a shifting operation from the bicycle sprocket to a smaller sprocket. The shift assist tooth has a maximum radial height as measured from the root circle of the sprocket body. The maximum radial height of the shift assist tooth is larger than a maximum radial height of a majority of remaining ones of the sprocket teeth as measured from the root circle of the sprocket body. The shift assist tooth has a radially inclined surface sloping toward the smaller sprocket as the radially inclined surface approaches radially toward the center rotational axis A. | 04-21-2011 |
| 20110105263 | Multiple Sprocket Assembly for a Bicycle - A multiple sprocket assembly engageable with a roller chain and mountable to a driver of a rear wheel of a bicycle. The multiple sprocket assembly includes a smaller sprocket and a larger sprocket. Each of the smaller and larger sprockets has a radially outer ring with a plurality of teeth for engaging the roller chain. The radially outer ring has a plurality of radially outer pin mounts including a hole. The radially outer pin mounts are aligned with the teeth. The sprockets have a plurality of radially inner pin mounts connected to the radially outer ring forming a single piece. The radially inner pin mounts includes a hole. The radially inner pin mounts are aligned with the plurality of outer pin mounts disposed on an adjacent smaller sprocket. A plurality of pins connects the smaller sprocket and the larger sprocket to each other. The pins are mounted in the holes in the outer pin mounts on the smaller sprocket and in the holes in the inner, pin mounts of the larger sprocket. A first mounting sprocket is connected to the smaller sprocket by pins and a second mounting sprocket is connected to the larger sprocket by pins. The first and second mounting sprockets are supported on the hub axle at two positions spaced, apart in the axial direction of the hub axle. | 05-05-2011 |
| 20110287882 | POWER TRANSMISSION DEVICE - A power transmission device is used to distribute torque from a power source to an external device and an auxiliary device. The power transmission device is comprised of a first bearing and a second bearing both secured to a stationary member, a first sprocket rotatably supported by the first bearing, a second sprocket capable of being drivingly coupled with the auxiliary device, a chain coupling the first sprocket with the second sprocket, a rotary shaft rotatably supported by the second bearing, which is drivingly coupled with the power source and drivingly engageable with the external device to transmit a first part of the torque to the external device, and a joint drivingly linking the rotary shaft with the first sprocket to transmit a second part of the torque to the first sprocket. | 11-24-2011 |
| 20120172165 | Bicycle Power Train Cogs - A debris venting cog particularly useful for belt driven bicycle power train systems. The cog includes an outer circumferential surface that is shaped to drivingly interact with a flexible drive member such as a belt. The cog includes a number of cavities that are each shaped to interact with a tooth of the belt. A vent fluidly connects at least one cavity to atmosphere and is shaped to direct debris that can accumulate in the cavity or the belt in a radially inward and lateral direction so as to maintain a desired driving interaction between the belt and the cog. | 07-05-2012 |
| 20120196711 | BICYCLE SPROCKET ASSEMBLY - A bicycle sprocket assembly is provided with at least a first sprocket and a first axial spacer. The first sprocket includes a first sprocket mounting portion, a plurality of first sprocket arms extending radially from the first sprocket mounting portion and a first chain engaging portion disposed on radial outer ends of the first sprocket arms. The first chain engaging portion includes a plurality of first teeth. The first axial spacer is disposed on a first sprocket side surface of the first sprocket. The first axial spacer has a first spacer mounting portion and a plurality of first spacer arms extending radially from the first spacer mounting portion. The first spacer arms are partially visible from an axial view of a second sprocket side surface that faces in an opposite direction from the first sprocket side surface. | 08-02-2012 |
| 20120202633 | 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. | 08-09-2012 |
| 20120208662 | MULTI-GEAR CASSETTE AND DAMPING DEVICE - The invention relates to a damping device on a multi-gear cassette for a rear wheel of a bicycle, wherein percussive forces produced by the chain members running from the slack span of the chain onto the sprocket are damped. This is achieved by damping the chain in the region of the chain run-in on the sprocket where no loads are borne. In one embodiment, a damping ring is provided for the purpose of supporting the chain link plates, and the tooth contour of the tooth flank which does not transmit load force is set back, and the tooth root space according to the invention is recessed toward the hub center. As such, when the chain is fed in to the sprocket, the chain link plate contacts the damping ring rather than the chain roller impacting the tooth flank or the tooth base. | 08-16-2012 |
| 20120220402 | 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. | 08-30-2012 |
| 20120225745 | BICYCLE SPROCKET ASSEMBLY - A bicycle sprocket assembly is provided with at least a first sprocket, a second sprocket and a first axial spacer. The first sprocket includes an outermost peripheral portion defining a plurality of first teeth, and an innermost peripheral portion defining an opening that is free of any freewheel engaging splines. The first sprocket is larger than any other sprocket of the bicycle sprocket assembly. The second sprocket includes an outermost peripheral portion defining a plurality of second teeth, and an innermost peripheral portion defining an opening having a plurality of freewheel engaging splines. The first axial spacer is fixed to the first and second sprockets such that the first axial spacer is disposed between the first and second sprockets without any intervening sprockets disposed between the first and second sprockets. The first axial spacer includes an innermost peripheral portion defining an opening having a plurality of freewheel engaging splines. | 09-06-2012 |
| 20120244976 | Sprocket Assembly that is Worked Easily and Quickly - A sprocket assembly for a bicycle includes a sprocket body formed by a plurality of sprocket rings, and a collar mounted in the sprocket body. The sprocket body has a first side provided with a fitting portion and a second side provided with a mounting tube. The collar is received in the fitting portion of the sprocket body. The sprocket rings have different inner diameters so that the sprocket rings are arranged to have a stepped inner periphery, and have different outer diameters so that the sprocket rings are arranged to have a stepped outer periphery. Thus, the collar is separated from the sprocket body and is made independently so that the collar can be worked easily and quickly to fit shafts of different specifications and sizes and to fit the sprocket body of different specifications and sizes. | 09-27-2012 |
| 20120244977 | Bicycle cogset - A cogset, which is adapted to connect to a rotatable hub in a bicycle, comprises a cog assembly and a connective set installed to the cog assembly. The cog assembly includes at least one first cog, a second cog connected to the first cog, and a third cog connected to the first cog. Each of the first and second cogs are not directly connected to the rotatable hub. | 09-27-2012 |
| 20120244978 | Bicycle Cogset with Support Element - A cogset, which is adapted to connect to a rotatable hub in a bicycle, comprises a first cog, a second cog connected to the first cog, and a support element installed to the second cog. A limiting side of the support element is abutted against a side of the second cog. The support element is mounted by the first cog. Each of the first and second cogs is not directly connected to the rotatable hub. | 09-27-2012 |
| 20120302384 | Multi-Gear Cassette for a Bicycle - The invention relates to a multi-sprocket cassette mountable to a bicycle rear wheel for engaging a drive chain. The cassette includes a conical body formed as a single piece having a center axis that includes a plurality of sprocket portions, each of the plurality of sprocket portions including a plurality of teeth formed thereabout for engaging the drive chain and a plurality of connecting portions supporting each of the plurality of sprocket portions. One or more of the plurality of connecting portions includes a first wall thickness and one or more of the plurality of connecting portions includes a second wall thickness. The second wall thickness is less than the first wall thickness. A plurality of openings is formed through each of the plurality of connecting portions having the first wall thickness. | 11-29-2012 |
| 20120309572 | Multiple Sprocket Assembly for a Bicycle Gearing as Well as Rear Axle Arrangement with a Multiple Sprocket Assembly of this Type - The invention relates to a multiple sprocket assembly with a plurality of sprockets with different numbers of teeth for assembly on a rear axle of a bicycle, comprising a base body, on which at least a part of the plurality of sprockets is provided, as well as a support ring that is connected to or can be connected to the base body in a torque-transmitting manner. It is further provided thereby that the base body and the support ring are configured on their radially inner region respectively with a radial inner bearing section for rotatable bearing on a rear axle of the bicycle and that the support ring has at least one torque transmission section configured separately from the bearing section for transmitting a torque from the multiple sprocket assembly to a hub body. | 12-06-2012 |
| 20120322598 | Ratchet Structure of a freewheel and a hub - A structure of a freewheel and a hub contains a hub including a first ratchet having a pair of first teeth, a central shaft, a screw section, and a freewheel set; the hub including a first chainwheel disc assembly, a second chainwheel disc assembly, a plurality of chainwheel disks, and a screw; each chainwheel disc including a through hole, a first groove, and a second groove, a first single sprocket; the first chainwheel disc assembly includes an aperture, a recessed rim, a recess, a pair of notches, and a first double sprocket; wherein the second chainwheel disc assembly includes an opening, a second single sprocket, a raised fringe, a second ratchet and a pair of tooth, both of which are arranged on a front side of the raised fringe. | 12-20-2012 |
| 20130017914 | Driver for Mounting a Multiple Sprocket Arrangement to a Bicycle Rear Axle ArrangementAANM Braedt; HenrikAACI GebrunnAACO DEAAGP Braedt; Henrik Gebrunn DE - A driver for mounting a multiple sprocket arrangement to a bicycle rear axle arrangement. The multiple sprocket arrangement includes a sprocket assembly having a plurality of sprockets with different numbers of teeth and an adapter. The rear axle arrangement includes a hub. The driver includes an input torque transmitting profile for transmitting torque from between the sprocket assembly and the driver. A positioning section positions the sprocket assembly in the radial direction. External thread threadably receives the adapter and is disposed between the input torque transmitting profile and the positioning section. An output torque transmitting arrangement transmits torque between the driver and the hub. | 01-17-2013 |
| 20130225343 | Drive hub - A drive hub for two-wheeled vehicles with a hub body and with a fixed axle and with a sprocket carrier on which a plurality of sprockets is provided. The sprocket carrier is rotatably supported on the axle by way of at least one bearing. The sprocket carrier includes a circumferentially closed sleeve device on which at least one sprocket is disposed radially outwardly and on which two axially spaced bearings are provided radially inwardly for rotatably supporting the sprocket carrier on the axle via the bearings. | 08-29-2013 |
| 20130274046 | SPIRAL BICYCLE SPROCKET - A spiral bicycle sprocket includes a first sprocket portion to rotate about a center axis and having a first number of teeth, a second sprocket portion to rotate about the center axis and having a second number of teeth, and a third sprocket portion positioned between the first and second sprocket portions and having a third number of teeth, wherein the third number of teeth form a conical and spiral thread that joins the first sprocket portion and the second sprocket portion. | 10-17-2013 |
| 20130316863 | LOW-NOISE SPROCKET - A bicycle chainwheel assembly includes at least one smaller chainwheel and at least one larger chainwheel, the chainwheels engageable by a chain. The larger chainwheel includes a first tooth and a second tooth disposed adjacent the first tooth opposite a drive rotation direction. The first tooth and the second tooth have a configuration that improves the shifting of a chain from a smaller chainwheel to the larger chainwheel. The first tooth has a lateral recess and the second tooth has a deflection chamfer. The second tooth may also have a recess. The first and second teeth have a configuration that prevents the first and second teeth from capturing the chain. An inner link plate of the chain includes a chamfer disposed on an outer side surface in a central region of the plate. | 11-28-2013 |
| 20140113757 | Bicycle Chain Rings - Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps, tapers and profiled teeth for improved shifting performance. The embodiments of bicycle chain rings of the present invention may be configured for large chain rings on double cranksets and large and middle chain rings on triple cranksets. The embodiments of bicycle chain rings of the present invention may also be retrofitted to existing bicycle cranksets by replacing original chain rings. The embodiments of bicycle chain rings of the present invention may further be configured for any standard crankset mounting bolt configuration and for any suitable number of teeth. | 04-24-2014 |
| 20140179474 | Sprocket Assembly - The invention relates to a sprocket assembly for mounting on a driver of a rear wheel hub of a bicycle. By means of a threaded element, a sprocket cluster and a separately embodied ring element are axially clamped together, and a rotation-coupling device is provided between the sprocket cluster and the ring element. Knurled teeth features on the threaded element and ring element prevent the loosening of the threaded element. Through the separate embodiment of the ring element and sprocket cluster, the respective most suitable manufacturing methods can be used for the two parts and, in the event that the sprocket cluster is manufactured by means of machining methods, the knurled features on the ring element can also be produced in a cost-effective and precise manner through shaping methods. | 06-26-2014 |
| 20140302956 | SPROCKET MODULE FOR A BICYCLE AND SPROCKET ASSEMBLY COMPRISING SUCH A MODULE - A sprocket module for a bicycle has at least two sprockets fixedly coupled one another. At least one first sprocket of the at least two sprockets comprises engagement portion to a freewheel body of a hub for a bicycle rear wheel. A second sprocket of the module lacks the engagement portion and is supported on the freewheel body through the aforementioned at least one first sprocket. The module allows strong and low-weight sprocket assemblies to be made. | 10-09-2014 |
| 20150018151 | SPROCKET MODULE FOR A BICYCLE AND SPROCKET ASSEMBLY COMPRISING SUCH A MODULE - A sprocket module for a bicycle has at least two sprockets fixedly coupled one another. At least one first sprocket of the at least two sprockets comprises engagement portion to a freewheel body of a hub for a bicycle rear wheel. A second sprocket of the module lacks the engagement portion and is supported on the freewheel body through the aforementioned at least one first sprocket. The module allows strong and low-weight sprocket assemblies to be made. | 01-15-2015 |
| 20150080160 | BICYCLE SPROCKET FOR USE WITH A MULTI-GEAR REAR CASSETTE - A rear bicycle sprocket for use with a multi-gear rear cassette is provided. The sprocket includes a chain engaging portion and a mounting portion having generally annular shape about a central axis and a plurality of support arms, integrally formed with the chain engaging portion and with the mounting portion. The sprocket further includes a plurality of space maintaining protrusions, each space maintaining protrusion extending axially forwardly from an axially forward surface of a corresponding support arm and integrally formed therewith. A multi-gear rear cassette having a plurality of sprockets coaxially mounted together wherein the plurality of sprockets includes the rear bicycle sprocket mounted axially rearmost and a bicycle including the multi-gear rear cassette are further provided. | 03-19-2015 |
| 20150133249 | BICYCLE DRIVE CHAINWHEEL ASSEMBLY - A bicycle drive chainwheel assembly mounted on a ratchet seat annularly provided with a flange peripherally at one end is disclosed, which includes a sleeve, at least one first chainwheel, at least one second chainwheel, at least one first washer, and a stopper. The sleeve has a first end being provided with a retaining wall stopped by the flange at one end of the ratchet seat, and a second end being provided with a first engagement portion and a second engagement portion having different outer diameters; the first chainwheel and the second chainwheel are respectively sleeved on the first engagement portion and the second engagement portion, a first washer is disposed between the first chainwheel and the second chainwheel, and a stopper is disposed on the other end of the ratchet seat. | 05-14-2015 |
| 20160059930 | BICYCLE SPROCKET AND BICYCLE SPROCKET ASSEMBLY - A bicycle sprocket has a rotational center axis. The bicycle sprocket comprises a sprocket body and a chain engagement structure. The sprocket body has an axial width defined in an axial direction parallel to the rotational center axis. The chain engagement structure is arranged on a radially outer periphery of the sprocket body. The chain engagement structure includes at least one shifting facilitation area and a plurality of chain-engaging teeth. The at least one shifting facilitation area is configured to facilitate changing gears. The plurality of chain-engaging teeth include at least two neighboring chain-engaging teeth each including a chain-engaging portion configured to engage with a bicycle chain. The chain-engaging portion has an axial chain-engaging width defined in the axial direction. The axial chain-engaging width is larger than the axial width of the sprocket body. | 03-03-2016 |
| 20160059932 | BICYCLE MULTI-GEAR CASSETTE - A bicycle multi-gear cassette mountable to a wheel hub driver mechanism that includes truncated conical shell having a first opening proximate a small shell base and a second opening proximate a large shell base. The openings are coaxial with an axis of the shell. A plurality of toothed sprockets having different numbers of teeth are disposed on the shell and extend radially of the central axis. A torque load transmitting profile is configured on the shell proximate one of the small and large shell bases. A radial load transmitting profile is configured on the shell proximate one of the small and large shell bases. The shell, sprockets, and the load transmitting profiles embody a single piece. | 03-03-2016 |
| 20160083045 | CHAIN WHEEL ASSEMBLY AND CHAIN WHEEL DEVICE USING IT - The present invention provides a chain wheel assembly and chain wheel device using it, wherein the chain wheel device includes a driver, a switching sleeve, plural chain wheels with different diameter sizes, plural connectors, and a fastener. Therein, the driver is connected to a wheel hub of a back wheel of a bicycle for transmitting a torque. One end of the switching sleeve is screwed to the driver. The chain wheels, axially stacked from the largest one to the smallest one, are disposed in a direction from the driver toward the switching sleeve, with sprockets disposed on the periphery of each chain wheel, respectively, for optionally engaging chain. The ring-shaped connectors are coupled between each two of the chain wheels, respectively. The fastener is screwed to the other end of the switching sleeve for axially fixing the switching sleeve. | 03-24-2016 |
| 20160101825 | MULTI-SPROCKET ARRANGEMENT FOR A BICYCLE - A multi-sprocket arrangement for a rear wheel hub of a bicycle may have improved gearshift characteristics, reduced vibrations during skewed running, and improved wear characteristics. The multi-sprocket arrangement includes a multiplicity of sprockets of different diameters, wherein at least one of the sprockets has a multiplicity of teeth. Also on the circumference of said sprocket, as viewed in a circumferential direction, at least one sequence of teeth is provided in which, with regard to their material thickness, a thin tooth is followed by a thick tooth which is followed in turn by another thin tooth. The sprocket has an impression and/or a passage recess which form at least one gearshift path and permit a shift between two adjacent sprockets. | 04-14-2016 |
| 20160114859 | BICYCLE COGSET - A bicycle cogset comprises a sprocket base, a first sprocket, and a second sprocket. A periphery of the sprocket base is provided with a plurality of connecting arms, and each of the connecting arms is provided with at least one first and one second connection hole respectively. The first sprocket has a first outer portion and a first inner portion, the first outer portion provided with a plurality of first teeth, the first inner portion provided with a plurality of first insertion members, and the first insertion members disposed in the first connection holes. The second sprocket has a second outer portion and a second inner portion, the second outer portion provided with a plurality of second teeth, the second inner portion provided with a plurality of second insertion members, and the second insertion members disposed in the second connection holes. | 04-28-2016 |
| 20160144929 | BICYCLE SPROCKET FOR USE WITH A MULTI-GEAR REAR CASSETTE - A rear bicycle sprocket for use with a multi-gear rear cassette is provided. The sprocket includes a chain engaging portion and a mounting portion having generally annular shape about a central axis and a plurality of support arms, integrally formed with the chain engaging portion and with the mounting portion. The sprocket further includes a plurality of space maintaining protrusions, each space maintaining protrusion extending axially forwardly from an axially forward surface of a corresponding support arm and integrally formed therewith. A multi-gear rear cassette having a plurality of sprockets coaxially mounted together wherein the plurality of sprockets includes the rear bicycle sprocket mounted axially rearmost and a bicycle including the multi-gear rear cassette are further provided. | 05-26-2016 |
| 20160167737 | MULTIPLE BICYCLE SPROCKET ASSEMBLY | 06-16-2016 |
| 20160176477 | Sprocket assembly for a bicycle | 06-23-2016 |
| 20160200395 | DRIVER FOR MOUNTING A MULTIPLE SPROCKET ARRANGEMENT TO A BICYCLE | 07-14-2016 |
| 20180022415 | BICYCLE SPROCKET SUPPORTING MEMBER AND BICYCLE SPROCKET ASSEMBLY | 01-25-2018 |
| 20180022416 | BICYCLE SPROCKET ASSEMBLY | 01-25-2018 |
| 20220135180 | TOOTHED WHEEL ASSEMBLY FOR A CASSETTE - The invention relates to a toothed wheel assembly for a cassette having a first toothed wheel and a second toothed wheel that are concentric. The second tooth wheel has a greater number of teeth than the first toothed wheel; a radially inner cylindrical portion to engage a sprocket support body; a plurality of spokes comprising respective first constraining portions to the first toothed wheel and second constraining portions to the radially inner cylindrical portion; and a plurality of connection bodies that connect the first. The second toothed wheel has an axially-extending portion with at least one pair of spokes having connection bodies that include axially-extending portions in the circumferential direction and at least partially contained in the minimum circumferential extension a respective spoke. | 05-05-2022 |
