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US20120244977 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...
US20110065541 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...
US20120322598 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...
US20120225745 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...
US20110092327 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...
US20120172165 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...
US20120244978 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...
US20070087880 Sprocket tooth profile for a roller or bush chain  
An improved sprocket profile for engaging a roller or bush chain smoothly and preventing radial impact with the root of the tooth during engagement. Contact between the sprocket teeth and the...
US20120196711 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...
US20150018151 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...
US20140302956 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...
US20070060428 Toothed wheel of a bicycle drivetrain  
A toothed wheel is described with a peripheral portion that comprises a side projection at one or more teeth, projecting with respect to one of the sides of the toothed wheel. The projection...
US20080312017 Inverted tooth chain sprocket with frequency modulated meshing  
An inverted tooth chain drive system includes an inverted tooth chain structured for inside flank engagement. The chain includes link rows each including leading inside flanks that project...
US20110105263 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...
US20130316863 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...
US20130274046 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...
US20050014585 Combined out-in stroke mechanical transmission for facilitating and multiplying the speed of cycles and other pedal appliances  
Combined input-output mechanical transmission to facilitate and multiply the speed of cycles and other pedaled systems. Designed to limit the amount of rotation of the pedal mechanism and the...
US20060014599 Sprocket-carrying body for the rear wheel of a bicycle  
A sprocket-carrying body for a rear wheel of a bicycle has a tubular body, suitable for externally receiving a plurality of sprockets, a plurality of ribs at an outer surface of the tubular body,...
US20080176691 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...
US20090042679 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...
US20090279984 BICYCLE DRIVE UNIT AND FASTENER THEREOF  
A bicycle drive unit includes a crank having multiple branched radially extending from one end thereof. Each branch has a through hole defined therein. A chain wheel set is laterally mounted to...
US20080004143 Bicycle sprocket assembly  
A bicycle sprocket assembly includes first, second and third sprockets. A first mounting portion of the first sprocket is directly connected to a second mounting portion of the second sprocket by...
US20060154767 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...
US20070054769 Bicycle cadence variator transmission  
A power transmission system used in connection with a vehicle power wheel of a bicycle or other vehicle which has a fixed axle and which utilizes a rotating chain sprocket engaging an endless...
US20090098966 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...
US20050014590 Sprocket for a bicycle  
A chain sprocket for a bicycle has a body and at least one cover. The body has a periphery, two side surfaces, multiple teeth formed on the periphery and the cover formed on the side surfaces of...
US20090258740 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...
US20070135250 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,...
US20120244976 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...
US20100009794 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...
US20100099530 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...
US20100137086 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...
US20090042681 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...
US20060128511 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...
US20090082147 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...
US20090042680 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...
US20050282671 Shift assist projection for bicycle sprocket  
A shift assist projection is provided on a large bicycle sprocket to assist in shifting a chain to the sprocket from an adjacent smaller sprocket. The shift assist projection extends axially from...
US20090042682 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...
US20070093329 Motion transmission system with sprocket supported by elastic anti-jerk elements  
A motion transmission system for motor vehicles, comprising a motion transmission sprocket between a shaft to which the sprocket is connected and a circulating element engaged on the periphery of...
US20100081531 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...
US20100317479 CHAINSET WITH INTERCHANGEABLE CHAINRINGS  
Bicycle chainset comprising: two cranks (4,5) each comprising, at one end, means (7) for fastening a pedal, a main axle, of axis x-x′, coupled in rotation to the two cranks (4, 5) and intended to...
US20140113757 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...
US20070173364 Sprocket  
An annular plate, which is of a first material and has a toothed external periphery, is shrink fitted onto the perimeter of a disc of a second material so that there is no play between the annular...
US20090118046 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...
US20080202284 RIGHT CRANK ARM ASSEMBLY FOR A BICYCLE AND CRANK ARM AND FRONT SPROCKET  
A right crank arm assembly for a bicycle, comprises a right crank arm and at least one front sprocket coupled with the crank arm at at least one coupling portion of the crank arm. The front...
US20090220319 Captive fasteners for bicycle chainguides  
The present invention according to certain embodiments relates to chain guides with captive fasteners. A chain guide of the current invention in certain embodiments is designed to preserve...
US20080207369 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...
US20120202633 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...
US20060040776 Fixed gear bicycle hub  
A fixed bicycle hub assembly for changing (removing and replacing) the hub (rear) gear on a fixed gear bicycle hub so that another gear can be used; comprising a chain, a molded unitary hub having...
US20080058144 Bicycle sprocket assembly  
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....
Matches 1 - 50 out of 91 1 2 >