Patent application number | Description | Published |
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 |
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 |
20130139642 | Chainring - A solitary chainring of a bicycle front crankset for engaging a drive chain, including a plurality of teeth formed about a periphery of the chainring, the plurality of teeth consisting of an even number. The plurality of teeth includes a first group of teeth and a second group of teeth arranged alternatingly between the first group of teeth. The first group of teeth and the second group of teeth are equal in number. Each of the first and second group of teeth include an outboard side and an inboard side opposite the outboard side and each tooth of the first group of teeth includes at least a first protrusion on the outboard side thereof and each tooth of the second group of teeth are free of the first protrusions on the outboard side and the inboard side. | 06-06-2013 |
20140100069 | Chainring - A solitary chainring of a bicycle front crankset for engaging a drive chain, including a plurality of teeth formed about a periphery of the chainring, the plurality of teeth consisting of an even number. The plurality of teeth includes a first group of teeth and a second group of teeth arranged alternatingly between the first group of teeth. The first group of teeth and the second group of teeth are equal in number. Each of the first and second group of teeth include an outboard side and an inboard side opposite the outboard side and each tooth of the first group of teeth includes at least a first protrusion on the outboard side thereof and each tooth of the second group of teeth are free of the first protrusions on the outboard side and the inboard side. | 04-10-2014 |
Patent application number | Description | Published |
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 |
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 |
20130072334 | Sprocket for Rear Wheel of a Bicycle - The present invention relates to a sprocket for use with a bicycle, the sprocket for use with a multi-sprocket assembly and chain, wherein the sprocket is made from a light but comparatively soft material and does not have shifting aids in the form of recesses and notches on the sprocket teeth where the chain rollers are in contact with the load flanks of the teeth. | 03-21-2013 |