Abstract: A bicycle rear wheel sprocket arrangement which is rotatable about a common sprocket rotation axis that defines an axial direction and orthogonal to which are radial directions, comprising a plurality of sprockets of different sizes and number of teeth arranged coaxially along the sprocket rotation axis, which are connected to one another such that the sprockets jointly rotate about the sprocket rotation axis together, wherein the sprocket arrangement comprises a first partial arrangement that includes a largest sprocket, and a second partial arrangement that includes a plurality of sprockets formed integrally with one another. One partial arrangement has a plurality of elastically deformable latching formations that are in latching engagement with a plurality of mating latching formations of the other partial arrangement to prevent the two partial arrangements from separating in the axial direction.

Abstract: A bicycle chain includes inner link members and outer link member. An inner link having two connecting openings which are formed at a distance from each other, pass through the inner link in the thickness direction thereof and are each designed for receiving a connecting component in order to connect the inner link to a further inner link in order to form an inner link member of a bicycle chain. An outer link member may be formed and attached to the inner link. The inner and/or outer links may be formed with features asymmetric about various orientations of the links.

Abstract: A freewheel hub for a bicycle is presented. The freewheel hub may include a hub axle, a hub sleeve which is mounted rotatably on the hub axle, and a driver which is mounted rotatably on the hub axle and can be connected to at least one sprocket arrangement. A freewheel device may be arranged between the hub sleeve and the driver. The free wheel device may include a first clutch ring, which is coupled or couplable to the hub sleeve in a torque-transmitting manner, a second clutch ring, which is coupled or couplable to the driver in a torque-transmitting manner. The two clutch rings have mutually facing axial toothings and a preload device which is designed and arranged to preload the two clutch rings axially towards one another, wherein the preload device has a spring arrangement with at least one spring element made of a plastic with a cellular structure.

Abstract: A bracket element configured for installation on an axial inner side of an associated bracket portion of a bicycle frame for the purposes of installing a rear gearshift mechanism of a derailleur system on the bicycle frame is provided. The bracket element may include a first portion, which has an opening or aperture assigned to the axle and which, in the installed state, is subjected to a clamping force which acts between the rear bracket portion. The bracket element may also include a second portion having an installation opening which is radially offset in relation to the opening or aperture in the installed state with respect to the axis and to which an attachment end of a base element of the rear gearshift mechanism is fixable.

Abstract: A chain-closing link for a bicycle chain including two closing parts. Each of the closing parts includes a closing plate having a retaining opening and a displacement region. Each of the closing parts also includes a chain pin. The closing plate includes a recess and/or a hole having a securing region.

Abstract: A bicycle drive includes a multi-sprocket arrangement for rotatable mounting on a rear-wheel axle an engagement with a bicycle chain having inner link plate pairs and chain outer link plate pairs. The multi-sprocket arrangement includes a sprocket having, between an axial inner side and an oppositely situated axial outer side, a flat sprocket body and a plurality of teeth formed on a circumference of the sprocket. The plurality of teeth include at least one tooth of a first tooth group, the axial width of which is dimensioned to be greater than a chain inner link plate spacing and smaller than a chain outer link plate spacing, and a second tooth group, the axial width of which are dimensioned to be smaller than the chain inner link plate spacing.

Abstract: A bicycle chain includes inner link members and outer link member. An inner link having two connecting openings which are formed at a distance from each other, pass through the inner link in the thickness direction thereof and are each designed for receiving a connecting component in order to connect the inner link to a further inner link in order to form an inner link member of a bicycle chain. An outer link member may be formed and attached to the inner link. The inner and/or outer links may be formed with features asymmetric about various orientations of the links.

Abstract: A bicycle operating apparatus includes a carrier element having fastening device for fixing the apparatus to the handlebar; a housing, on the carrier element, having an electronic circuit arrangement in the housing; a first and a second switch, each connected to the electronic circuit arrangement, are on the housing; and an operating component mounted on the carrier element pivotable about an operating axis preloaded into a neutral position, the operating component deflected out of the neutral position in a first direction of rotation about the operating axis to actuate the first switch, and deflected out of the neutral position in a second direction opposite to the first direction to actuate the second switch, where the operating component includes a first operating element and a second operating element that are formed separately from one another in one piece and are mounted on the carrier element pivotable about the operating axis.

Abstract: A drive arrangement for a bicycle has a multi-sprocket arrangement for a rear wheel hub of the bicycle. The multi-sprocket arrangement comprises a plurality of sprockets with different diameters, wherein the sprockets each have a plurality of teeth which are separated by tooth spaces, and which can be placed in engagement with a drive chain with wide and narrow chain links which follow one another alternatively in succession. On a circumference of at least a starting sprocket of the plurality of sprockets, at least one sequence of teeth is provided at a location where a changeover of the drive chain from the starting sprocket to a selected sprocket occurs. The sequence of teeth comprises a first tooth having a tooth base that is tangent to a root circle of the starting sprocket or lies radially outside of the root circle, and at least one additional tooth which follows the first tooth lies with its tooth base radially within the root circle of the starting sprocket.

Abstract: The disclosure relates to a chain roller for a rear bicycle gearshift mechanism. The chain roller comprising a rotatory bearing, a toothed ring with teeth formed thereon, and a support structure which connects the rotary bearing and the toothed ring. The toothed ring and support structure are formed from different materials and are connected to one another radially and axially.

Abstract: A control device for a bicycle is arranged or can be arranged on the handlebar of the bicycle and serves to wirelessly drive at least one electronic, electrical, electromechanical or electrohydraulic component of the bicycle. The control device includes an operator control arrangement which has at least one manually operable operator control element and is designed to respond to operation of the operator control element and to output electrical signals which represent the operation. The control device also includes at least one electronic circuit arrangement comprising a radio communication circuit and a control circuit which is connected or can be connected to the operator control arrangement. The control device also may include at least one antenna which is connected or can be connected to the radio communication circuit or which is integrated into the said communication circuit.

Abstract: A bicycle rear wheel sprocket arrangement comprises a carrier sprocket and a self-supporting sprocket cluster connected to the carrier sprocket on the outboard side in a connection region of the carrier sprocket. The sprocket arrangement comprises a plurality of further sprockets which are designed as sprocket rings. The sprocket rings are each arranged on the carrier sprocket in the connection region and each are connected to the carrier sprocket.

Abstract: A sprocket for a bicycle drive train comprising an outer ring having external teeth for engaging in a bicycle chain, and an inner ring coaxially disposed with the outer ring and is connected to the outer ring in a rotationally fixed manner. The inner ring has a central opening. A circumferential collar is configured to be integral with the inner ring and projects axially to one side of the inner ring and is configured as a continuous collar. An internal profile having a plurality of radially inward-projecting radial protrusions is provided on the radially inner side of the collar, and an external profile having a plurality of radial depressions, which in number and arrangement correspond to the radial protrusions of the internal profile, is provided on the radially outer side of the collar.

Abstract: A bicycle operating apparatus includes a carrier element having fastening device for fixing the apparatus to the handlebar; a housing, on the carrier element, having an electronic circuit arrangement in the housing; a first and a second switch, each connected to the electronic circuit arrangement, are on the housing; and an operating component mounted on the carrier element pivotable about an operating axis preloaded into a neutral position, the operating component deflected out of the neutral position in a first direction of rotation about the operating axis to actuate the first switch, and deflected out of the neutral position in a second direction opposite to the first direction to actuate the second switch, where the operating component includes a first operating element and a second operating element that are formed separately from one another in one piece and are mounted on the carrier element pivotable about the operating axis.

Abstract: A drive arrangement for a bicycle has a multi-sprocket arrangement for a rear wheel hub of the bicycle. The multi-sprocket arrangement comprises a plurality of sprockets with different diameters, wherein the sprockets each have a plurality of teeth which are separated by tooth spaces and which can be placed in engagement with a drive chain with wide and narrow chain links which follow one another alternatively in succession. On at least one sprocket, a corrective feature is provided which is designed such that the drive chain, as it revolves around a selected sprocket or during a sprocket changeover from a starting sprocket to a selected sprocket, is oriented, with regard to its wide and narrow chain links, in a predetermined chain link plate orientation relative to the teeth of the selected sprocket.

Abstract: A control device for a bicycle is arranged or can be arranged on the handlebar of the bicycle and serves to wirelessly drive at least one electronic, electrical, electromechanical or electrohydraulic component of the bicycle. The control device includes an operator control arrangement which has at least one manually operable operator control element and is designed to respond to operation of the operator control element and to output electrical signals which represent the operation. The control device also includes at least one electronic circuit arrangement comprising a radio communication circuit and a control circuit which is connected or can be connected to the operator control arrangement. The control device also may include at least one antenna which is connected or can be connected to the radio communication circuit or which is integrated into the said communication circuit.

Abstract: A connection of a bicycle derailleur to a bicycle frame is presented. A mounting element with a retaining bolt is used. The mounting element may be configured with an insertion sheath. At least one element of the insertion sheath and the retaining bolt may be configured with at least one engagement formation adapted for this purpose, together with at least one counter-engaging element, which is separate from the insertion sheath and the retaining bolt, or a counter-engaging formation of the respective other element from the insertion sheath and the retaining bolt, to produce an elastic snap-in retaining connection or a bayonet-type retaining lock, which realizes a positive retaining engagement between the insertion sheath and the retaining bolt.

Abstract: The invention relates to a multi-sprocket arrangement for installation on a rear-wheel hub and for engagement with a bicycle chain. The multi-sprocket arrangement includes at least ten adjacent sprockets with different numbers of teeth. In each case of the at least ten adjacent sprockets two adjacent sprockets of the sprockets are arranged with a defined spacing to one another. The defined spacing corresponds either to a smallest spacing or to a larger spacing.

Abstract: A hold and release mechanism for holding and releasing a cable includes a toothed-disk arrangement coupled with the cable take-up device for rotating together about a first axis. The toothed-disk arrangement includes a plurality of teeth at an outer periphery of the toothed-disk arrangement. The plurality of teeth includes locking and safety teeth. The locking catch engages with one of the locking teeth for holding the toothed-disk arrangement in a first rotational position. The safety catch engages with one of the safety teeth for holding the toothed-disk arrangement in a second rotational position.

Abstract: A drive arrangement for a bicycle includes a crank having a crank mounting portion, a front sprocket having a front sprocket mounting portion attached to the crank mounting portion and a front chain engaging portion, an axle assembly, a plurality of rear sprockets located about an axis of the axle assembly, a chain configured to engage with the front chain engaging portion of the front sprocket and the plurality of rear sprockets, a gear changer having a gear changer mounting unit located about the axis of the axle assembly and having a first mounting portion spaced apart from a second portion mounting portion. The gear changer is configured to move the chain between an axially innermost rear sprocket and an axially outermost rear sprocket and a control unit is configured to control movement of the gear changer.