Pulley assemblies and associated methods are disclosed. An example pulley assembly may include a first pulley and a second pulley laterally movable relative to the first pulley. The first pulley and the second pulley provide for different drive ratios. The second pulley is movable from a first position in which the second pulley is laterally offset from the first pulley and a second position in which the second pulley is laterally aligned with the first pulley. An endless drive components, such as an endless belt, maintains a constant position whether the endless drive component is engaged with the first pulley or the second pulley located in the second position.

Pulley assemblies and associated methods are disclosed. An example pulley assembly may include a first pulley and a second pulley laterally movable relative to the first pulley. The first pulley and the second pulley provide for different drive ratios. The second pulley is movable from a first position in which the second pulley is laterally offset from the first pulley and a second position in which the second pulley is laterally aligned with the first pulley. An endless drive components, such as an endless belt, maintains a constant position whether the endless drive component is engaged with the first pulley or the second pulley located in the second position.

The present disclosure provides a pulley, comprising a cylindrical wall having an outer surface with a plurality of circumferential grooves configured to receive a corresponding plurality of ribs on an inner surface of an elastic belt, a web connected to an inner surface of the cylindrical wall, a central hub connected to the web, the central hub comprises a central opening sized to be press-fit onto a drive shaft, and a drive feature configured to mate with a drive tool, thereby facilitating rotation of the pulley using the drive tool.

A continuously variable transmission device (1) for a two-wheel, three-wheel or four-wheel motorcycle includes a cam system (20, 22; 32a, 32b) operating between a fixed bushing (11) and a mobile bushing (9). The device is configured to obstruct the approach between the active surfaces (8a, 10a) or to facilitate the approach of the active surfaces.

A continuously variable transmission device (1) for a two-wheel, three-wheel or four-wheel motorcycle includes a cam system (20, 22; 32a, 32b) operating between a fixed bushing (11) and a mobile bushing (9). The device is configured to obstruct the approach between the active surfaces (8a, 10a) or to facilitate the approach of the active surfaces.

A toothed CVT using a Cone with One Torque Transmitting Member that is coupled by a Transmission Belt to another Cone with One Torque Transmitting Member for which teeth re-engagement between the Torque Transmitting Members and their Transmission Belt is improved. Said CVT uses a slack-side Tensioning Pulley in order to maintain the tension in the slack-side of the Transmission Belt almost constant so as to ensure smooth re-engagement of the Driven Cone; and a Transmission Diameter Compensating Mechanism, which increases the Transmission Diameter of the Driving Cone when the torque being pulled by the Driving Cone is increased, in order to compensate for an increase in “Transmission Belt Teeth Compression” and an increase in “stretching of the tense-side of the Transmission Belt”, due to an increase in tension in the tense-side of the Transmission Belt when an increased torque is transmitted; to ensure smooth re-engagement of the Driving Cone.

In one variation, a pulley arrangement includes a base pulley portion rotatable within a driving plane, an adjustable pulley portion coupled to the base pulley portion wherein the adjustable pulley portion is rotatable relative to the base pulley portion within the driving plane, and a driving member including an end coupled to the adjustable pulley portion wherein at least a portion of the driving member is wrapped at least partially around the adjustable pulley portion. In another variation, a pulley arrangement includes a base pulley portion rotatable around an axis, an adjustable pulley portion coupled to the base pulley portion and movable in a first direction parallel to the axis, and a sliding block engaged with the adjustable pulley portion, wherein the sliding block moves in a second direction different from the first direction, in response to compression of the adjustable pulley portion against the base pulley portion.

In one variation, a pulley arrangement includes a base pulley portion rotatable within a driving plane, an adjustable pulley portion coupled to the base pulley portion wherein the adjustable pulley portion is rotatable relative to the base pulley portion within the driving plane, and a driving member including an end coupled to the adjustable pulley portion wherein at least a portion of the driving member is wrapped at least partially around the adjustable pulley portion. In another variation, a pulley arrangement includes a base pulley portion rotatable around an axis, an adjustable pulley portion coupled to the base pulley portion and movable in a first direction parallel to the axis, and a sliding block engaged with the adjustable pulley portion, wherein the sliding block moves in a second direction different from the first direction, in response to compression of the adjustable pulley portion against the base pulley portion.

A device and a method can be utilized to measure concentricity of an internal toothing of a component. Such a device may include a determination segment, which can determine a concentricity deviation, that includes a spindle unit comprising a tapping spindle with a gauge gear wheel arranged thereon and intended for tapping the concentricity of the internal toothing, and an output spindle for transmitting the tapped concentricity from the tapping spindle to a measuring unit. The output spindle may be arranged directly or indirectly on the tapping spindle. A spindle holder may hold and position the tapping spindle, the output spindle, or the spindle unit. An adjusting element may position the gauge gear wheel, and the measuring unit may compare the tapped concentricity with reference values.

In one variation, a pulley arrangement includes a base pulley portion rotatable within a driving plane, an adjustable pulley portion coupled to the base pulley portion wherein the adjustable pulley portion is rotatable relative to the base pulley portion within the driving plane, and a driving member including an end coupled to the adjustable pulley portion wherein at least a portion of the driving member is wrapped at least partially around the adjustable pulley portion. In another variation, a pulley arrangement includes a base pulley portion rotatable around an axis, an adjustable pulley portion coupled to the base pulley portion and movable in a first direction parallel to the axis, and a sliding block engaged with the adjustable pulley portion, wherein the sliding block moves in a second direction different from the first direction, in response to compression of the adjustable pulley portion against the base pulley portion.