A power transmission drive member adapted to mesh with a drive sprocket to transmit rotary motion, the drive member comprising a plurality of engaging mechanisms, each comprising an engaging body comprising an engagement pocket adapted to engage with the drive sprocket, each of which engagement pockets comprising a first engaging surface and a second engaging surface spaced apart from the first engaging surface, the first and second engaging surfaces forming an engaging surface pair, which pair is rotatable about an engaging mechanism rotational axis, wherein the power transmission drive member comprises a carrier, which carrier is articulated and is adapted to support the plurality of engaging mechanisms.

A plate link chain for a continuously variable cone pulley belt transmission of a motor vehicle includes a plurality of cradle thrust pieces arranged in joints, a plurality of link plates coupled by the joints, and a contact device disposed between a pair of the joints. The contact device includes a contact surface arranged to contact a pulley surface. In an example embodiment, the contact device is arranged in a free space of the plate link chain facing towards the pulley surface. In an example embodiment the contact device is attached to a one of the plurality of link plates. In an example embodiment, the plate link chain includes a frame, and the contact device is attached to the frame. In an example embodiment, the contact surface is convexly curved. In an example embodiment, the contact surface is elastic relative to the pulley surface.

A plate link chain for a continuously variable cone pulley belt transmission of a motor vehicle includes a plurality of cradle thrust pieces arranged in joints, a plurality of link plates coupled by the joints, and a contact device disposed between a pair of the joints. The contact device includes a contact surface arranged to contact a pulley surface. In an example embodiment, the contact device is arranged in a free space of the plate link chain facing towards the pulley surface. In an example embodiment the contact device is attached to a one of the plurality of link plates. In an example embodiment, the plate link chain includes a frame, and the contact device is attached to the frame. In an example embodiment, the contact surface is convexly curved. In an example embodiment, the contact surface is elastic relative to the pulley surface.

A power transmission drive member adapted to mesh with a drive sprocket to transmit rotary motion, the drive member comprising a plurality of engaging mechanisms, each comprising an engaging body comprising an engagement pocket adapted to engage with the drive sprocket, each of which engagement pockets comprising a first engaging surface and a second engaging surface spaced apart from the first engaging surface, the first and second engaging surfaces forming an engaging surface pair, which pair is rotatable about an engaging mechanism rotational axis, wherein the power transmission drive member comprises a carrier, which carrier is articulated and is adapted to support the plurality of engaging mechanisms.

A chain plate includes two end segments, and an intermediate segment between the end segments. One of the end segments has an extension portion extending away from a rod hole of the end segment in a lengthwise direction. A distance from a center of the rod hole to an edge of the end segment in the lengthwise direction is greater than a distance from the center of the rod hole to an edge of the end segment in a widthwise direction. An inner surface of the chain plate has a first inclined region corresponding to a peripheral region of the end segment, and a second inclined region corresponding to the extension portion and between the first inclined region and the rod hole. The intermediate segment is formed with a recess.

A conveyor chain having links joined by link pin biased into any of multiple operating positions with its positioning head blocked against rotation by engagement with a detent on a positioning link. The pin can be lifted so that its head is above the level of the detent, rotated to a new operating position, and allowed to be biased back into its position with the head again blocked against rotation by the detent, whereby the wear surface of the pin can be changed to accommodate for chain wear occurring when a link rotates relative to the link pin.

A conveyor chain having links joined by link pin biased into any of multiple operating positions with its positioning head blocked against rotation by engagement with a detent on a positioning link. The pin can be lifted so that its head is above the level of the detent, rotated to a new operating position, and allowed to be biased back into its position with the head again blocked against rotation by the detent, whereby the wear surface of the pin can be changed to accommodate for chain wear occurring when a link rotates relative to the link pin.

A bush chain includes a plurality of units. The plurality of units are coupled together in an endless shape and each include a pair of inner plates, a bush, a pair of outer plates, and a coupling pin. The pair of inner plates each include a pair of bush holes. The bush is fixed to the bush hole and includes a pin hole. The pair of outer plates are each disposed at the outside of the respective inner plate. The coupling pin is fixed to the outer plates, and is inserted through and rotatable in the pin hole of the bush. Abrasive particles are embedded in an inner peripheral face at the pin hole of the bush.

A bush chain includes a plurality of units. The plurality of units are coupled together in an endless shape and each include a pair of inner plates, a bush, a pair of outer plates, and a coupling pin. The pair of inner plates each include a pair of bush holes. The bush is fixed to the bush hole and includes a pin hole. The pair of outer plates are each disposed at the outside of the respective inner plate. The coupling pin is fixed to the outer plates, and is inserted through and rotatable in the pin hole of the bush. Abrasive particles are embedded in an inner peripheral face at the pin hole of the bush.

A chain drive system having chain links, guide links disposed on opposite lateral sides of the chain links, and pivot pins that extend through the chain links and are fixedly coupled to the guide links. Mating anti-rotation features are employed between each pivot pin and a corresponding one of the guide links to resist rotation between the pivot pin and the guide link.