Abstract: The disclosure relates to an electric Bicycle Drive Unit for arrangement in a Bottom Bracket Area of a Bicycle Frame. The Drive Unit has an Electric Motor Device and a Bottom Bracket Assembly having a Bottom Bracket Shaft. The disclosure also relates to a Bicycle Frame or Frame Interface Unit, and an Energy Storage Device for the Electric Bicycle Drive Unit. The Drive Unit includes s an Integrative Energy Storage Device for supplying energy to the motor device. The Integrative Energy Storage Device can be arranged adjacent to the motor device in such a way that the center of gravity position of the Energy Storage Device and the center of gravity position of the Drive Unit lie within the Bottom Bracket Area.

Abstract: The disclosure relates to a torque transmission assembly for a bicycle. The torque transmission assembly includes an adapter device and a driving body that is rigidly connectable to the adapter device in a torque transmitting manner. The adapter device has three support arms that extend with a radial direction component, and the driving body has a corresponding number of support cutouts. The support arms are received in the support cutouts forming a press fit. The torque transmission assembly is characterized in that the press fit of the support arms and support cutouts has two fitting planes, which are parallel to one another and to an imaginary plane containing the axis of rotation of the assembly. There is a clearance between the support arm and support cutout along the radial direction component.

Abstract: A bicycle derailleur pulley comprises a bearing region rotatable about an axis of rotation, a tooth region with teeth formed thereon for engaging into the chain, and a supporting structure that connects the bearing region and the tooth region. On at least one tooth of the chain-guiding pulley, on each of the inboard-side and outboard-side side surfaces thereof, there are formed guide regions for lateral guidance of the chain substantially parallel to the axis of rotation. At least one inboard-side guide region of the at least one tooth has an at least regionally reduced thickness dimension, relative to a central plane of the chain-guiding pulley, in relation to at least one outboard-side guide region, such that a chain section running substantially tangentially off the chain-guiding pulley can assume a greater skew angle in an outboard direction than in an inboard direction.

Abstract: A bicycle derailleur mechanism is provided which accommodates larger radial spacing and/or smaller radial spacing having a non-uniform value over the respective winding region. The derailleur mechanism cable pull transmission device may provide over its rotational angular range about the rotational axis, which is effective during operation, a variable transmission ratio as a function of the rotational position of the cable pull transmission device relative to the base component.

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 chain is used to transmit the drive force to at least one chain wheel and contains chain rollers and inner and outer plates which are connected to each other by means of pins. As a result of a corresponding shaping of the extremely hard inner plate, the wear on the teeth which cooperate with the inner plate can be reduced on the chain wheels or sprockets.

Abstract: An Actuating device for a bicycle is provided. The actuating device may include a static element which is positionally fixed in relation to a bicycle frame, a movable element which is movable in relation to the static element, an electromechanical drive which provides drive force for a movement of the movable element. The electromechanical drive has a motor and a gearing driven by the motor. The gearing may include a first gearing wheel and a second gearing wheel which is in engagement with the first gearing wheel.

Abstract: A single sprocket for mounting on a pedal crank of a bicycle is provided. The sprocket h is mounted rotatably about an axis of rotation of a bicycle, and for engaging in a bicycle chain with chain inner link plate pairs and chain outer link plate pairs. The sprocket includes an axial outer side, an axial inner side, a hub region, a tooth region and a connecting region. A tooth center plane of the sprocket is offset inwards in the axial direction with respect to a hub center plane.

Abstract: A rear derailleur is provided for the coaxial attachment on a portion of a bicycle frame rear tail while using an adapter that includes an adapter bolt and an adapter nut and has a dual-arm base element, a pivoting mechanism, a movable element and a chain guide assembly. The reference is distinguished by at least one engagement element which facilitates an indirect frictional engagement between the adapter nut, on the one hand, and at least one of a) an inner first arm of the base element, b) an axial internal side of the mounting portion and c) the adapter bolt, on the other hand. Said engagement element, in a defined pre-assembled state, acts in the sense of a reinforcement of a consequential rotational force being able to be exerted on the base element by the adapter bolt and the adapter nut.

Abstract: An individual chain wheel for a bicycle front crank arrangement for engaging in a drive chain includes a plurality of teeth formed on a circumference of the chain wheel and having a first and a second group of teeth. The teeth of the second group of teeth are arranged in an alternating manner between the teeth of the first group of teeth. Each tooth has a load flank via which force is transmitted between an adjacent roller of the drive chain and the respective tooth. Each tooth of the first group may also have at least one profile with an opening in the vicinity of the flank, in which a portion of an inner link plate of the drive chain, which portion protrudes beyond the roller, engages.

Abstract: A multi-sprocket assembly for attachment to a rear axle assembly of a bicycle comprises at least one first sprocket, at least one second sprocket, and at least one damping member. The at least one first sprocket has a toothed ring, a coupling opening and a connecting portion connecting the toothed ring to the coupling opening. The at least one damping member extends from the at least one first sprocket toward the at least one second sprocket. The at least one damping member is disposed at least on an axial side surface of the connecting portion of the at least one first sprocket.

Abstract: A bicycle sprocket for a sprocket cassette comprises a sprocket main body which extends about a virtual sprocket axis about which the sprocket is rotatable during intended operation on a bicycle. In the case of a single release tooth being formed, a release-side stabilizing tooth is arranged in the circumferential region of extent of an upshift recess formation. The release-side stabilizing tooth has an inner tooth contact surface which has a greater axial spacing to an axial reference position than an inner tooth contact surface of the reference tooth. Additionally, or alternatively, in the case of a single catch tooth being formed, a receiving-side stabilizing tooth is arranged in the circumferential region of extent of a downshift recess formation. The receiving-side stabilizing tooth has an inner tooth contact surface which has a greater axial spacing to the axial reference position than the inner tooth contact surface of the reference tooth.

Abstract: The present invention relates to a freewheel hub for a bicycle, comprising a freewheel device which optionally allows relative rotation between a hub sleeve and a driver or couples the hub sleeve and the driver in a torque-transmitting manner. The freewheel device has at least one first clutch ring and at least one second clutch ring, wherein the first clutch ring is coupled or coupleable to the hub sleeve in a torque-transmitting manner, and wherein the second clutch ring is coupleable or coupled to the driver in a torque-transmitting manner, and wherein the first and the second clutch ring are displaceable axially relative to the hub axle between an engaged position and a freewheel position. Provision is made here for at least one magnet arrangement accommodated in apertures in the first clutch ring to keep the clutch rings in the engaged position.

Abstract: A bicycle rear-wheel sprocket pairing for engaging in a meshing, force-transmitting and form-fitting manner with a bicycle roller chain, wherein the rear-wheel sprocket pairing is rotatable about a sprocket axis. The sprocket axis defines an axial direction running along the sprocket axis, a radial direction running so as to be orthogonal to the sprocket axis, and a circumferential direction encircling the sprocket axis. The rear-wheel sprocket pairing comprises a larger sprocket and a smaller sprocket which for rotating conjointly with the larger sprocket in a slip-free manner about the sprocket axis is connected to the larger sprocket so as to be coaxial with and axially directly adjacent to the latter. The larger sprocket has an even tooth count of equal to or less than twenty-two teeth, and the difference in the tooth count between the larger and the smaller sprocket is exactly two teeth.

Abstract: An Actuating device for a bicycle is provided. The actuating device may include a static element which is positionally fixed in relation to a bicycle frame, a movable element which is movable in relation to the static element, an electromechanical drive which provides drive force for a movement of the movable element. The electromechanical drive has a motor and a gearing driven by the motor. The gearing may include a first gearing wheel and a second gearing wheel which is in engagement with the first gearing wheel.

Abstract: An individual chain wheel for a bicycle front crank arrangement for engaging in a drive chain includes a plurality of teeth formed on a circumference of the chain wheel and having a first and a second group of teeth. The teeth of the second group of teeth are arranged in an alternating manner between the teeth of the first group of teeth. Each tooth has a load flank via which force is transmitted between an adjacent roller of the drive chain and the respective tooth. Each tooth of the first group may also have at least one profile with an opening in the vicinity of the flank, in which a portion of an inner link plate of the drive chain, which portion protrudes beyond the roller, engages.

Abstract: A multi-sprocket arrangement for a rear wheel assembly for a bicycle with a derailleur system is provided. The multi-sprocket arrangement has an axis of rotation and is designed for coupling, for conjoint rotation, to a driver of the rear wheel assembly. The multi-sprocket arrangement comprises at least eleven sprockets with differing numbers of teeth. Each sprocket has an inner side surface and an outer side surface in the region of its teeth and a sprocket center plane lying between the inner side surface and the outer side surface and running orthogonally with respect to the axis of rotation.

Abstract: The disclosure relates to an electromechanical rear derailleur for coaxial assembling on a rear wheel axle. The derailleur has a base element, a pivot mechanism, and a movable element having a chain guide assembly. The chain guide assembly is connected to the movable element so as to be rotatable about a rotation axis. A blocking device permits the chain guide assembly to be established relative to the movable element. The blocking device is able to be inserted into the movable element in two different positions.

Abstract: A multi-sprocket assembly for a rear wheel assembly for a bicycle with a derailleur system, comprising a multi-sprocket arrangement and a locking screw arrangement. The multi-sprocket arrangement is configured to be couplable to a driver of the rear wheel assembly in a torque-transmitting manner and comprises at least eleven sprockets with differing numbers of teeth. The multi-sprocket assembly is configured such that, in the mounted state, at least two of the smallest sprockets are axially fixed to the driver via the locking screw arrangement. The locking screw arrangement has a shaft portion for receiving at least one sprocket of the at least two smallest sprockets. The shaft portion has an axially outer stop portion at one end region and at least one external thread at an opposite end region. The at least one external thread configured to be screwed into an associated internal thread to fix the locking screw arrangement.

Abstract: A multi sprocket arrangement is configured for mounting on a driver of a bicycle wheel. The multi sprocket arrangement includes a plurality of adjacent sprockets each of the plurality of sprockets having a different number of teeth. The plurality of adjacent sprockets include a first sprocket having a first inner diameter which is larger than an outer diameter of a profile base of a carrier profile of the driver, and a second sprocket having a second inner diameter which is smaller than the outer diameter of the profile base of the carrier profile of the driver. The first sprocket and the second sprocket are connected together by welding.