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.

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 belt installation tool (406) of the present invention includes a pulley pressing part (407) capable of being pressed toward a side of an outer periphery of a crank pulley (2) by the tension of a V-ribbed belt (4), a protection layer (471) having elasticity and covering the pulley pressing part (407) on the side of the outer periphery of the crank pulley (2), a belt hold part (408) for hooking and holding the V-ribbed belt 4, and a belt pressing part (409) for pressing the V-ribbed belt (4) extending along the outer periphery of the crank pulley (2) against the outer periphery of the crank pulley (2).

A belt installation tool (406) of the present invention includes a pulley pressing part (407) capable of being pressed toward a side of an outer periphery of a crank pulley (2) by the tension of a V-ribbed belt (4), a protection layer (471) having elasticity and covering the pulley pressing part (407) on the side of the outer periphery of the crank pulley (2), a belt hold part (408) for hooking and holding the V-ribbed belt 4, and a belt pressing part (409) for pressing the V-ribbed belt (4) extending along the outer periphery of the crank pulley (2) against the outer periphery of the crank pulley (2).

An assembly aid configured to fix the rotational position of rotatably mounted shafts. The assembly aid has at least two parallel mandrels which are connected to one another by way of a bridge, each mandrel being assigned a positioning element which is arranged at least in sections eccentrically with respect to the respective mandrel.

An assembly aid configured to fix the rotational position of rotatably mounted shafts. The assembly aid has at least two parallel mandrels which are connected to one another by way of a bridge, each mandrel being assigned a positioning element which is arranged at least in sections eccentrically with respect to the respective mandrel.

The invention discloses: a drive belt safety device (20) including a belt retaining portion (22) and a wedging portion (24) operably coupled to the belt retaining portion (22), wherein the wedging portion (24) includes a geometry configured to wedge between a drive belt (16) and a pulley (12, 14); and a method of securing a drive belt system (10), the drive belt system (10) comprising a pair of pulleys (12, 14) configured to rotate and a drive belt (16) disposed around each of the pulleys (12, 14), the method comprising the steps of placing at least one drive belt safety device (20) adjacent to a pulley (12, 14), and securing a portion of the drive belt (16) to the at least one drive belt safety device (20).

The invention discloses: a drive belt safety device (20) including a belt retaining portion (22) and a wedging portion (24) operably coupled to the belt retaining portion (22), wherein the wedging portion (24) includes a geometry configured to wedge between a drive belt (16) and a pulley (12, 14); and a method of securing a drive belt system (10), the drive belt system (10) comprising a pair of pulleys (12, 14) configured to rotate and a drive belt (16) disposed around each of the pulleys (12, 14), the method comprising the steps of placing at least one drive belt safety device (20) adjacent to a pulley (12, 14), and securing a portion of the drive belt (16) to the at least one drive belt safety device (20).

The present invention relates to a belt attachment tool used for further winding a belt, which is wound on a first pulley (1) and a second pulley (2), on a third pulley (3), the belt attachment tool containing a side surface part (10), an attaching part (11), a first belt holding part (14), and a second belt holding part (15), and the second belt holding part (15) is arranged so that a point (F) of intersection between a first extension line (L1) extending the belt wound on the first belt holding part (14) from an outer periphery of the second pulley (2) and a second extension line (L2) extending the belt wound on the second belt holding part (15) from an outer periphery of the first pulley (1) is located to a front side in a rotation direction (A) of the third pulley (3) with respect to a center line (L3) connecting a center (1S) of the first pulley (1) with a center (3S) of the third pulley.

The present invention relates to a belt attachment tool used for further winding a belt, which is wound on a first pulley (1) and a second pulley (2), on a third pulley (3), the belt attachment tool containing a side surface part (10), an attaching part (11), a first belt holding part (14), and a second belt holding part (15), and the second belt holding part (15) is arranged so that a point (F) of intersection between a first extension line (L1) extending the belt wound on the first belt holding part (14) from an outer periphery of the second pulley (2) and a second extension line (L2) extending the belt wound on the second belt holding part (15) from an outer periphery of the first pulley (1) is located to a front side in a rotation direction (A) of the third pulley (3) with respect to a center line (L3) connecting a center (1S) of the first pulley (1) with a center (3S) of the third pulley.