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9011282 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...
8968130 Bicycle cogset with support element  
A cogset, which is adapted to connect to a rotatable hub in a bicycle, includes a first cog, a second cog connected to the first cog, and a support element installed to the second cog. A limiting...
8956254 Bicycle sprocket assembly  
A bicycle sprocket assembly has a first sprocket with a plurality of first radially protruding portions, a second sprocket with a plurality of second radially protruding portions and a sprocket...
8911314 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...
8911313 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 (2) for a traction mechanism comprising at least two adjacently disposed single wheels (3, 4), each...
8905878 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...
8834309 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...
8820852 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...
8821329 Bicycle chain rings with ramps  
Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps with lifting surfaces for improved up-shifting performance. Additional embodiments of...
8821330 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...
8764594 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...
8696503 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...
8663044 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...
8617015 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...
8573093 Right crank arm assembly for a bicycle and crank arm thereof  
A right crank arm assembly for a bicycle, comprises a right crank arm, a first annular element directly coupled with said crank arm at least one first coupling portion of said first annular...
8550944 Multi-speed sprocket assembly  
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...
8517874 Low-noise chainwheel  
A bicycle chainwheel assembly that 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...
8506436 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...
8430775 Multiple tension reducing sprockets in a chain and sprocket system  
In chain and sprocket systems with at least two resonance modes, two or more tension reducing sprockets are oriented to cancel each other at a first resonance mode and have no effect to increase...
8235850 Multiple sprocket assembly  
A multiple sprocket assembly for a bicycle includes a larger diametrical sprocket and a smaller diametrical sprocket. The larger diametrical sprocket includes at least one auxiliary guiding...
8226511 Bicycle sprocket tooth with a shift assist radius greater than a reference tooth radius  
A bicycle sprocket comprises a sprocket body having a first side surface and a second side surface, a plurality of sprocket teeth extending radially outwardly from a root portion of the sprocket...
8197371 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...
8177670 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...
8118699 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...
8100795 Riveted sprocket assembly  
A riveted sprocket assembly that includes a sprocket carrier having a plurality of carrier arms and a plurality of sprockets attached to the carrier arms by rivets. First and second rivet heads of...
8096908 Bicycle sprocket with a laterally projecting gear change tooth  
A sprocket comprises a sprocket body and a plurality of sprocket teeth extending radially outwardly from a root portion of the sprocket body. The sprocket body has a first side surface and a...
8092329 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...
8066601 Timing chain drive system  
In a timing chain driving system in which the speed of a driving sprocket fluctuates cyclically, the tooth pitch of a driven sprocket from which a tension span of the chain travels toward the...
8066603 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...
8066602 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...
8062158 Timing chain drive unit  
In a timing chain drive unit the tooth pitch of a driven sprocket from which a tension span of the chain travels toward a driving sprocket varies cyclically around the circumference of the driven...
8057338 Bicycle sprocket apparatus with reinforcement between sprockets  
A bicycle sprocket apparatus comprises a sprocket support, a first sprocket coupled to the sprocket support at a plurality of circumferentially spaced first sprocket mounting locations, a second...
7967709 Bicycle sprocket  
A bicycle sprocket is provided with a metallic sprocket ring part and a non-metallic inner ring part. The metallic sprocket ring part has a crank facing surface, an opposing surface, an inner...
7959529 Bicycle multi-gear cassette  
A bicycle multi-gear cassette mountable to a wheel hub that generally includes a truncated conical shell and a plurality of toothed sprockets having different numbers of teeth. The shell includes...
7942771 Bicycle sprocket apparatus with a shift inhibiting structure  
A bicycle sprocket apparatus comprises a larger diameter sprocket and a smaller diameter sprocket, wherein the larger diameter sprocket has on its outer periphery a plurality of sprocket teeth,...
7931553 Bicycle sprocket apparatus with a chain support structure  
A bicycle sprocket apparatus comprises a sprocket mounting member, a first sprocket, and a second sprocket. The sprocket mounting member includes a hub mounting portion and a sprocket mounting...
7918315 Differential transmission with cleaning feature  
A limited slip differential transmission of the closed type in which a pressurized lubricant is fed to the rotating gears and a series of limited slip clutch plates. The clutch plates are engaged...
7883437 Sprocket  
A sprocket for transferring a force between a chain and a drive element that includes a plurality of teeth and a plurality of openings proximate the teeth. Each tooth has a load-bearing flank and...
7871347 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...
7854673 Bicycle sprocket assembly having a reinforcement member coupled between sprockets  
A bicycle sprocket assembly includes a first sprocket, a second sprocket and at least one reinforcement member. The first sprocket includes a first main body and a first chain engagement portion....
7846048 Multi-speed sprocket assembly  
A multi-speed sprocket assembly is suggested, including at least a larger sprocket and at least a smaller sprocket. The smaller sprocket has a trailing tooth which is last to engage the chain...
7846047 Bicycle sprocket having a thickened spline  
A sprocket comprises a sprocket body; a plurality of teeth extending radially outwardly from the sprocket body and dimensioned to engage a bicycle chain; and a spline extending radially inwardly...
7824287 Bicycle sprocket  
A bicycle sprocket is provided that has a sprocket ring part, a synthetic resin fastening part and at least one attachment part. The synthetic resin fastening part is non-movably coupled to the...
7753815 Bicycle chain wheel assembly  
A bicycle chain wheel assembly is provided with a chain wheel and a chain wheel cover. The chain wheel has a central mounting portion and an outer gear with a plurality of outer gear teeth. The...
7744498 Structure of transmission for bicycle  
To achieve downsizing and weight reduction of a derailleur shaft and the mounting structure thereof and to improve the rigidity of the derailleur shaft without increasing the thickness thereof...
7654925 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...
7591746 System and method of getting for a bicycle and other-pedal-driven vehicles mechanical energy output exceeded muscular energy input due to the gravitational lever.  
A transmission that is rotatable and connectable to the gravity mass increases the speed of rotation.
7585240 Bicycle sprocket assembly  
A bicycle sprocket assembly has two or more sprockets in which a chain is shifted between adjacent pairs of the sprockets. Each sprocket includes a chain engaging portion with a plurality of teeth...
7544139 Multifunctional pedaling motion bicycle  
An improved multifunctional pedaling motion bicycle, particularly to a transmission mechanism of bicycle includes a clutch member that is manually controlled to move between and selectively engage...
7503864 Bicycle sprocket  
A bicycle sprocket basically has a metallic sprocket ring part and a synthetic resin fastening part that is configured to ensure that weight can be reduced and that loss of fastening force...
Matches 1 - 50 out of 221 1 2 3 4 5 >