A drive sprocket can include a plurality of teeth for meshing with a drive member to transmit rotary motion. The drive member can include a plurality of engagement pockets engaging the teeth of the drive sprocket, where each tooth has a tooth profile defined by a first side comprising a first engagement surface and an opposite second side comprising a second engagement surface, which engagement surfaces are configured such that when driven, a tooth meshes to the engagement pocket at a first contact location on the first engagement surface and also at a second contact location on the second engagement surface.

A chain and an inner link plate for a bicycle chain having chain rollers is provided. A protrusion of the inner link plate in relation to the respectively assigned chain roller in a front lower longitudinal end region of an inner link plate outer periphery is reduced, in comparison to the protrusion in a front upper longitudinal end region and/or in a rear lower longitudinal end region of the inner link plate outer periphery.

A bicycle chain lubricant that may be applied as a coating on a bicycle chain is a crystalline solid at ambient temperatures, yet when the chain is in motion the forces around internal components locally transforms the coating to a lubricous fluid. This increases chain efficiency in the drive train and reduces ware by limiting water and dirt access to chain internal components.

A bicycle chain lubricant that may be applied as a coating on a bicycle chain is a crystalline solid at ambient temperatures, yet when the chain is in motion the forces around internal components locally transforms the coating to a lubricous fluid. This increases chain efficiency in the drive train and reduces ware by limiting water and dirt access to chain internal components.

An object of the present invention is to provide a chain drive system capable of reducing sliding resistance between a chain and a guide shoe, suppressing an increase, over time, in sliding resistance, and reducing wear on the guide shoe. A chain drive system according to the present invention includes a chain having a plurality of chain plates, a plurality of sprockets on which the chain is wound, and one or more guides each including, integrally or separately, a guide shoe having a chain-running surface, and slidably guiding, in presence of lubricating oil, the chain. At least one of the plurality of chain plates has a lubricant region retaining a solid lubricant.

Mining machines such as continuous miners and chain haulage units may include chain conveyors that are capable of deflecting laterally in order to travel through lateral turns. The chain conveyors may include flight members for pushing or urging material along a pan. The chain may be driven by one or more sprockets. In one independent aspect, a link for a chain conveyor includes a body including a first end a second end opposite the first end, a first opening proximate the first end and extending in a direction transverse to a direction of travel of the link, a second opening proximate the second end and extending in a direction transverse to the direction of travel of the link, and a relief opening extending through the link body and positioned between the first end and the second end.

Mining machines such as continuous miners and chain haulage units may include chain conveyors that are capable of deflecting laterally in order to travel through lateral turns. The chain conveyors may include flight members for pushing or urging material along a pan. The chain may be driven by one or more sprockets. In one independent aspect, a link for a chain conveyor includes a body including a first end a second end opposite the first end, a first opening proximate the first end and extending in a direction transverse to a direction of travel of the link, a second opening proximate the second end and extending in a direction transverse to the direction of travel of the link, and a relief opening extending through the link body and positioned between the first end and the second end.

A plate link chain for a continuously variable transmission in a motor vehicle comprising chain links. The chain links have link plates coupled to one another by pairs of rocker pins and at least two different sprocket pitches. At least one absorption mass is arranged between two pairs of rocker pins in an absorption space within a link plate inner contour.

A plate link chain for a continuously variable transmission in a motor vehicle comprising chain links. The chain links have link plates coupled to one another by pairs of rocker pins and at least two different sprocket pitches. At least one absorption mass is arranged between two pairs of rocker pins in an absorption space within a link plate inner contour.

To provide a versatile and easy-to-produce link plate that can reduce frictional resistance and keep surface pressure low while maintaining a small height of a guide-side end surface, and can secure a tensile strength, and a chain. The guide-side end surface of the link plate is made up of a flat portion formed by a flat surface parallel to a line connecting centers of connection holes at leading and trailing ends, and both end surface portions on both ends in the chain longitudinal direction of the flat portion. The both end surface portions are formed to come closer to the line connecting the centers of the leading-end and trailing-end connection holes as the both end surface portions extend further from the flat portion.