A drive device (1) for a bicycle (100) includes a transmission (2) having a sensor for detecting a crank angle and a rotational speed of a pedal crankshaft and generating appropriate sensor data, a sensor for detecting a rotational speed of a driven shaft and generating appropriate sensor data, a sensor for detecting a rotational speed of the rotor shaft and generating appropriate sensor data, and a control device (10) configured for processing the sensor data and controlling by way of an open-loop system, a downshift from a currently engaged gear into a next-smaller gear as a function of the sensor data by energizing an electric machine (7).

A system and method for a bicycle transmission. Specifically, a bicycle transmission having a housing with a first shaft passing therethrough and a set of two cones in opposing parallel alignment disposed within the housing. The first cone engaged about the first shaft, the second cone engaged about a second shaft parallel to the first shaft, the second shaft structured and arranged to have at least a proximal position and a distal position relative to the first shaft. A driver is disposed generally normally about one of the two cones and passing therebetween, the driver structured and arranged to engaging a portion of the first cone with a portion of the second cone when the second cone is in the proximal position. A driver mover structured and arranged to move the driver between the cones when the second cone is in the distal position; and a transfer element joined to an end of the second shaft.

A system and method for a bicycle transmission. Specifically, a bicycle transmission having a housing with a first shaft passing therethrough and a set of two cones in opposing parallel alignment disposed within the housing. The first cone engaged about the first shaft, the second cone engaged about a second shaft parallel to the first shaft, the second shaft structured and arranged to have at least a proximal position and a distal position relative to the first shaft. A driver is disposed generally normally about one of the two cones and passing therebetween, the driver structured and arranged to engaging a portion of the first cone with a portion of the second cone when the second cone is in the proximal position. A driver mover structured and arranged to move the driver between the cones when the second cone is in the distal position; and a transfer element joined to an end of the second shaft.

A power-assist drive system for a vehicle (e.g., a bicycle) is provided. The system includes a drive unit assembly attached to a frame of a vehicle and a motor having an output shaft, and a drive gear rotatably associated with the output shaft. The system further includes a driven unit assembly including a driven gear configured to be attached to a wheel hub of the vehicle, and a brake disc coaxially attached to the driven gear. The drive gear may be configured to operably engage the driven gear to transmit power from the motor to the wheel hub. A brake caliper may be integrated with the drive unit assembly. The system may further include a battery and a speed controller configured to receive an input signal to selectively direct electrical power from the battery to the motor to drive the wheel via the drive gear and the driven gear.

A power-assist drive system for a vehicle (e.g., a bicycle) is provided. The system includes a drive unit assembly attached to a frame of a vehicle and a motor having an output shaft, and a drive gear rotatably associated with the output shaft. The system further includes a driven unit assembly including a driven gear configured to be attached to a wheel hub of the vehicle, and a brake disc coaxially attached to the driven gear. The drive gear may be configured to operably engage the driven gear to transmit power from the motor to the wheel hub. A brake caliper may be integrated with the drive unit assembly. The system may further include a battery and a speed controller configured to receive an input signal to selectively direct electrical power from the battery to the motor to drive the wheel via the drive gear and the driven gear.

A coupling arrangement for coupling members as a gear change coupling in a gear mechanism unit includes a first member and a second member. The first member has a coupling toothing system. At least one locking body arrangement is mounted pivotably on the second member. The locking body arrangement can be pivoted into a coupling position, in the case of which a driving section on the locking body arrangement engages into the coupling toothing system. The locking body arrangement can be pivoted into a release position, in the case of which the driving section of the locking body arrangement does not engage into the coupling toothing system. The locking body arrangement has a locking body carrier which is mounted pivotably on the second member, and has a locking body member which is mounted pivotably on the locking body carrier and on which the driving section is configured.

A coupling arrangement for coupling members as a gear change coupling in a gear mechanism unit includes a first member and a second member. The first member has a coupling toothing system. At least one locking body arrangement is mounted pivotably on the second member. The locking body arrangement can be pivoted into a coupling position, in the case of which a driving section on the locking body arrangement engages into the coupling toothing system. The locking body arrangement can be pivoted into a release position, in the case of which the driving section of the locking body arrangement does not engage into the coupling toothing system. The locking body arrangement has a locking body carrier which is mounted pivotably on the second member, and has a locking body member which is mounted pivotably on the locking body carrier and on which the driving section is configured.

A drive pulley for a continuously variable transmission comprising a fixed sheave having a first sheave face, a movable sheave axially movable relative to the fixed sheave along an axis of rotation of the continuously variable transmission, the movable sheave having a second sheave face, the fixed sheave and the movable sheave rotating about the axis of rotation and a separation measured at a constant radial distance from the axis of rotation along an axial direction between the first sheave face and the second sheave face, the separation varying around the axis of rotation.

A coupling arrangement for coupling members as a gear change coupling in a gear mechanism unit includes a first member and a second member. The first member has a coupling toothing system. At least one locking body arrangement is mounted pivotably on the second member. The locking body arrangement can be pivoted into a coupling position, in the case of which a driving section on the locking body arrangement engages into the coupling toothing system. The locking body arrangement can be pivoted into a release position, in the case of which the driving section of the locking body arrangement does not engage into the coupling toothing system. The locking body arrangement has a locking body carrier which is mounted pivotably on the second member, and has a locking body member which is mounted pivotably on the locking body carrier and on which the driving section is configured.

A coupling arrangement for coupling members as a gear change coupling in a gear mechanism unit includes a first member and a second member. The first member has a coupling toothing system. At least one locking body arrangement is mounted pivotably on the second member. The locking body arrangement can be pivoted into a coupling position, in the case of which a driving section on the locking body arrangement engages into the coupling toothing system. The locking body arrangement can be pivoted into a release position, in the case of which the driving section of the locking body arrangement does not engage into the coupling toothing system. The locking body arrangement has a locking body carrier which is mounted pivotably on the second member, and has a locking body member which is mounted pivotably on the locking body carrier and on which the driving section is configured.