| SRAM Deutschland GmbH Patent applications |
| Patent application number | Title | Published |
|---|
| 20120083383 | HUB WITH MECHANISM TO PERMIT BACKWARDS MOVEMENT WITHOUT PEDAL MOVEMENT - A control mechanism for decoupling a drive ratchet on a bicycle hub makes it possible to push the bicycle backwards while the foot pedals of the pedal crank drive remain still. These functions can be applied to folding bicycles, in which pedal movements are harmful when in their folded up state. The control mechanism includes a controlling sleeve coupled to the drive ratchet, which is indirectly connected by means of a frictional device to the unmoving hub axle. | 04-05-2012 |
| 20110224037 | Cable Control Actuating Device For A Bicycle Derailleur - A device for guiding and supporting the cable for actuating a front derailleur for bicycles. The device provides the cable guide parts with alternative cable routing paths, wherein the cable guide parts are securely connected to the connecting arm. The cable clamping screw for clamping the control cable is housed in a space saving manner in an opening in the cable guide part, wherein a direct transfer of the actuating forces to the connecting arm is possible with small frictional losses. | 09-15-2011 |
| 20110224036 | Axial Fixing Device With An Integrated End Plug - An axial fixing and closure member arrangement including an insert element for producing a rotatable, but axially fixed connection between the rotary axle of the chain guide of a rear gear change mechanism for bicycles and the related lower pivot head by means of a spring element, wherein additionally the insert element also has a sealing effect by providing an integrated closure member. | 09-15-2011 |
| 20110130242 | Multi-Speed Internal Gear Hub for a Bicycle - A bicycle multi-speed internal gear hub including a hub axle, a hub shell rotatably mounted about the hub axle, a driver rotatably mounted about the hub axle and at least two gear stages providing at least two gear ratios. Each gear stage includes a planetary gear mechanism having at least one sun gear, a sun gear clutch connecting the sun gear and the hub axle to rotate together, a planet carrier and a ring gear. The at least two gear stages connected in series. One of the at least two gear stages is an overdrive gear stage with a greater speed at a gear stage output then at a gear stage input, the other of the at least two gear stages is an underdrive gear stage with a lower speed at the gear stage output than at the gear stage input. One of the at least two gear stages is coupled to the driver and the other of the at least two gear stages is coupled to the hub shell. One of the at least two gear stages provides a plurality of smaller gear ratios, the other of the at least two gear stages provides a plurality of larger gear ratios. A direct drive gear stage with a gear ratio of 1:1 is not used in one of the at least two gear stages. | 06-02-2011 |
| 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 |
| 20100081527 | Bicycle Derailleur - A derailleur is configured to be mounted to a bicycle frame. The derailleur includes a clamp mountable to the bicycle frame. The clamp includes a first end having a threaded portion receiving a clamp fastener for tightening of the clamp about the bicycle frame. A base member is connected to the clamp and includes a bore receiving the clamp fastener. A chain guide receives and laterally displaces a chain. First and second link members pivotably connect the base member and the chain guide. One of the link members includes an opening aligned with the bore such that the clamp fastener passes through the opening and into the bore of the base member. | 04-01-2010 |
| 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 |
| 20100071499 | Bicycle Shifter - A shifter designed to actuate a gear change device of a bicycle by pulling and releasing a control cable. The shifter includes a base plate mountable to the bicycle, a cable spool and cable-pull and cable-release lever assemblies. The cable spool is rotated in a cable-pull direction to wind the control cable thereon and in a cable-release direction to unwind the control cable therefrom. The cable-pull and cable-release lever assemblies are operatively connected to the cable spool to rotate the cable spool in the cable-pull and cable-release directions, respectively. The cable-pull lever assembly includes a cable-pull lever rotated about a first axis and at least two winding pawls received by and rotating with the cable-pull lever about the first axis to transmit rotational movement of the cable-pull lever to the cable spool. | 03-25-2010 |
| 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 |
| 20090230758 | Bicycle Wheel Hub - The present invention provides a bicycle wheel hub that generally includes an axle, an input sprocket, an output shell, a one-way clutch and a locking mechanism. The one-way clutch operatively connects the input sprocket and the output shell and is configured to drive the output shell in a first direction. The locking mechanism is configured to operatively connect the output shell and the input sprocket to drive the output shell in a second direction to operate the bicycle wheel hub in a fixed drive mode. The locking mechanism is configured to operatively disconnect the output shell and the input sprocket to operate the bicycle wheel hub in a freewheel drive mode. | 09-17-2009 |
| 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 |
| 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 |
| 20090095117 | Control Cable Adjustment Device - A control cable adjustment device for adjusting a control cable extending between a control mechanism and an operating mechanism. The adjustment device includes an adjuster rotatably connected to a housing of the control mechanism and a spring element having at least one retention segment. The retention segment engages a detent contour of the adjuster to retain the adjuster in its current position. Another segment of the spring element may have a second function as a return spring for a gear shifter or a brake lever. | 04-16-2009 |
| 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 |
| 20080224530 | Bicycle Multi-Speed Hub - A multi-speed hub for cantilever mounting to a bicycle frame generally includes a planetary gear mechanism, a hub shaft, a hub shell, a spoke shell, a driver and a driven gear. The hub shell is cantilever-mounted to the bicycle frame and configured to enclose the planetary gear mechanism and the hub shaft. The spoke shell, driver and driven gear are rotatably supported by the hub shell One end of the hub shaft is indirectly supported by the hub shell and the other end of the hub shaft is fixed to the bicycle frame. | 09-18-2008 |
