Matches 51 - 100 out of 236 < 1 2 3 4 5 >


Match Document Document Title
7819766 Device for coupling pulleys or gear wheels  
A coupling device (10) for a gear wheel (12), a pulley or other similar units comprising a support (18) for a gear wheel (16) or an operating portion of the pulley or unit, means for centering and...
7798928 Dual ratio belt drive system  
A dual ratio belt drive system comprising a clutch unit mounted directly to a driver rotating shaft, a one-way clutch mounted directly to the driver rotating shaft, a plurality of rotating...
7789781 Timing belt structure with corner groove  
The timing belt and a coupling structure of the same are disclosed, in which a stress focused at a corner portion decreases by forming an optimum shaped groove at a corner portion of a timing...
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...
7749117 Ovoid chainrings for optimising conventional pedaling  
Improvement in the design of variable original radius chainrings for coupling to conventional bicycle cranks in order to apply traction, which primarily consists of its being provided with a...
7686721 Bicycle chainring  
A bicycle chainring is formed from a first member and an second member. The first member includes a center rotational axis, a crank attachment portion with a plurality of chainring attachment...
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...
7635314 Chain transmission  
In a chain transmission in which a roller chain transmits power from a driving sprocket to one or more driven sprockets, the sprocket teeth are shaped so that at a location radially outward from...
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...
7569633 Molding phenolic resin material for pulley, and method of using molding resin material  
A resin molding material for making pulleys containing a novolac type phenolic resin, a glass fiber, an inorganic substrate other than the glass fiber, and an elastomer is described. The novolac...
7534182 Sprocket for chain  
In a sprocket for a chain transmission, teeth are disposed around the circumference of the sprocket at intervals. Arc-shaped tooth gap bottoms are formed between adjacent teeth, and each tooth gap...
7491143 Sprocket of a chain transmission for a bicycle  
A sprocket of a chain transmission for a bicycle is described, intended to be coupled with a further sprocket with a smaller diameter in a group of sprockets integral in rotation. The sprocket...
7462120 Warped chain ring gear used in a bicycle chain transfer  
A chain ring gear set adapted for attaching to spider arms. The spider arms are attached to and extend outwardly from a bicycle gear crank. The ring gear set is adapted for receiving a bicycle...
7442139 Conveyance system  
In a slat conveyor, slats for supporting conveyed articles and personnel extend between two side-by-side, spaced, endless roller chains engaged with driving sprockets at one end of the conveying...
7435197 Rear sprocket for bicycle transmission  
A bicycle transmission has among other things a rear hub with a freewheel with an outer freewheel body supporting a plurality of sprockets. A chain is shifted between adjacent pairs of the...
7416500 Random engagement roller chain sprocket and timing chain system including same  
A sprocket and a roller chain drive system including same are disclosed. The sprocket is a random engagement sprocket comprising a first plurality of A-profile teeth formed with a first asymmetric...
7300373 Power transmission mechanism and manipulator  
A power transmission mechanism comprising: a flexible power transmission element; a pair of a drive pulley and a driven pulley on which the flexible power transmission element is wound, each the...
7244203 Bicycle derailleur  
A bicycle derailleur is provided with a chain guide that basically includes inner and outer guide plates, a guide pulley and a tension pulley. The tension pulley is rotatable about a rotation axis...
7244205 Key sprocket drive system  
A key sprocket drive system for a conveyor belt having a drive drum having an outer surface. The outer surface of the drive drum is adapted to engage a securement means. A contoured collar has an...
7179341 Integrated sprocket and housing and manufacturing method therefor  
An integrated sprocket and housing used in a variable valve timing mechanism. The integrated sprocket and housing includes: a sprocket portion which is formed in a substantially annular shape, and...
7156764 Extensible chainwheel for a bicycle powertrain assembly  
A driving sprocket, or chainwheel, for a bicycle crankset having a toothed ring whose ring is divided into a plurality of segments, the segments being borne by a frame that is rotationally movable...
7128673 Sprocket for chain  
In a sprocket for a roller chain, the tooth form is such that the distance between the tooth center line and a part of the front tooth surface, at a location on the tooth head side of the pitch...
7118505 Integrally formed gear set with a plurality of gears  
An integrally formed gear set with a plurality of gears comprises a first, a second and a third gear. Each gear has a plurality of teeth and a plurality of recess portions. The teeth and recess...
7101296 Synchronous rear belt drive system for motorcycles and method of use  
A synchronous rear belt drive system for belt driven motorcycles and a method of altering the final drive ratio of such motorcycles utilizing the present rear belt drive system is disclosed. The...
7097580 Sprocket for a silent chain and method of manufacturing the same  
A sprocket for preventing the partial wear on the teeth of the sprocket. The teeth of the sprocket comprised of a pair of side portions located on opposite sides of a tooth and a central portion...
7044876 Bicycle sprocket having lateral protrusions for use in a multiple sprocket assembly  
A sprocket is adapted to be mounted to a sprocket support that rotates around an axle. The sprocket comprises a sprocket body having a side surface and an inner peripheral surface defining a...
7041020 Deflection pulley for a traction mechanism drive  
The invention relates to a deflection pulley (1), intended for a traction drive, which includes a rolling-contact bearing as well as a ring body (4). A securing screw (8) as well as a spacer...
7022037 Gear assembly for a bicycle gear change  
Gear assembly for a bicycle gear change, comprising at least one gear with a larger diameter and at least one gear with a smaller diameter. The selected gear, generally of a larger diameter, has...
7018313 Sprocket with wear limit indication  
In a sprocket for use with a roller chain, a wear limit marker, having a different color from that of the base material of the sprocket, is provided on side surface of a sprocket tooth adjacent to...
7011592 Sprocket assembly for a bicycle  
A sprocket comprises a sprocket portion having a plurality of radially extending teeth, a first coupling portion extending from a first side of the sprocket portion and having a first coupling...
7004867 Top sprocket for a rear sprocket assembly and rear sprocket assembly for a bicycle  
A rear sprocket assembly has a plurality of sprockets with the smallest sprocket being a top or first sprocket. At least one of the teeth is a down shift tooth that has a recessed side surface to...
6932732 Toothed belt wheel with a collar  
A cog belt pulley defining an axis of rotation having an outer circumferential surface oriented about the axis of rotation and including a plurality of teeth for engagement with at least one cog...
6929575 Pulley  
A pulley comprises a disk and an insert. The insert is fitted into the center of the disk integrally. Linear expansion coefficient of the disk is larger than the same of the insert. A concavity is...
6875113 Torsional vibration damper  
A torsional vibration damper mountable to a rotatable shaft. The torsional vibration damper is a composite structure including a body formed of a polymer, such as a glass-reinforced polyamide,...
6866604 Multiple level sprocket support for a bicycle  
A sprocket support for a bicycle includes a first outer peripheral surface portion and a second outer peripheral surface portion. The first outer peripheral surface portion is adapted to support...
6865808 Method of forming a pulley  
A pulley is made by fixing an edge of an opening of a plate by using a first upper mandrel ring installed at a lower end of a first supporting pin of a first forming device. A supporting block is...
6817959 Chain wheel  
A chain wheel is described with a wheel body consisting of a wheel rim and a wheel hub which wheel body carries a transmitter ring with radially projecting shoulders for detecting various angles...
6805645 Tooth contour structure for large sprocket set of bicycle  
A tooth contour structure for large sprocket set of bicycle having at least three characteristic teeth arranged on a larger sprocket of two adjacent sprockets, wherein the right side of a first...
6761657 Roller chain sprocket with added chordal pitch reduction  
A sprocket is defined to include added chordal pitch reduction when in a new or “as-manufactured” condition. The sprocket chordal pitch Ps′ is purposefully reduced as compared to the as-built...
6736744 Roller chain sprocket for preventing substantially radial impact with chain rollers  
A sprocket is disclosed for use with a roller chain and that substantially avoids radial impact of chain rollers with the sprocket. The sprocket differs from prior sprockets in that the tooth root...
6672983 Power transmission drive system  
A drive system comprising a driver pulley, a driven pulley (22), and a belt (10). The belt (10) has a pulley engaging surface (16) comprised of a plurality of transversely extending self-tracking...
6666786 Chamfered sprocket assembly  
A chamfered sprocket assembly for facilitating the shifting of a drive chain from a larger sprocket to a smaller sprocket is disclosed. In a preferred embodiment, the chamfered sprocket assembly...
6623392 Short pitch tooth chain  
A short pitch tooth chain that reduces the level of impact noise generated during operation is disclosed. A chain system includes a first sprocket having a plurality of sprocket teeth spaced apart...
6595603 Drive sprocket wheel for a track vehicle  
An undercarriage for a track vehicle includes an endless track having links of constant length connected end to end in the direction of travel, each link having a pair of spaced-apart guide webs...
6575861 Sprocket and chain for limiting chordal fall motion  
A sprocket for engaging a power transmission chain and for limiting motion of the chain along the radial direction of the sprocket is disclosed. The sprocket supports the chain at the sprocket...
6517457 Dynamically steerable mono belt apparatus  
The present invention is a dynamically steerable mono belt apparatus and includes a first pivotable body element in communication with a second pivotable body element. A first pivot mechanism is...
6500084 Sprocket system for inverted tooth chain  
The chain and sprocket design of the present invention is applicable to sprockets (9) which have an even number of teeth and chains which use inward-pointing teeth and parallel links (2) and outer...
6475110 Bicycle front chainwheel assembly  
A bicycle front chainwheel assembly is provided that includes a protective cover. The front chainwheel assembly basically includes a crank arm, one or more chainrings and the protective cover. The...
6428436 Drive sprocket with relief areas  
A drive sprocket for use with a belt module having a lower surface, and a pocket formed in the lower surface having a drive surface and a recessed surface includes a base having an outer periphery...
6413180 Power transmitting mechanism with silent chain and sprockets  
A power transmitting mechanism includes a first silent chain trained around teeth of a first driving sprocket and a teeth of first driven sprocket, and a second silent chain trained around teeth...

Matches 51 - 100 out of 236 < 1 2 3 4 5 >