A roller chain sprocket includes a body with a hub and a row of teeth that extends circumferentially around the hub such that the hub extends axially outward on opposite first and second sides of the row of teeth. The teeth are separated from each other by tooth spaces, wherein each of said tooth spaces is bisected by a radial tooth space centerline. First and second elastomeric cushion rings are respectively bonded to the hub on the opposite first and second sides of the row of teeth, with cushion ring extending circumferentially about the hub and including a plurality of compression pads separated from each other by axially extending transverse grooves. Each of the compression pads includes a planar or otherwise flat outer surface that is connected to a respective preceding one of the grooves by a leading corner surface and connected to a respective trailing one of the grooves by a trailing corner surface. Each of the grooves is located radially inward from a respective associated one of the tooth spaces such that the tooth space centerline is circumferentially aligned with the trailing corner surface that connects the groove to a preceding one of the compression pads. The compression pads provide both primary compression for a meshing chain link row and secondary compression for the next-meshing, upstream chain link row.

A driving sprocket for a marine-type chain whose links have a section of diameter between 8 and 20 millimeters, intended to be used in the agricultural field. The sprocket includes a main cylindrical recess between two lateral flanges and a plurality of regularly spaced forks projecting radially from the recess, delineating housings intended for receiving every other link of the substantially flat chain. The flanges extend beyond the recess over a height substantially equal to the width of a link of the chain.

A bicycle sprocket comprises a sprocket body and a plurality of chain-driving teeth. The plurality of chain-driving teeth comprises a first tooth and a second tooth. The first tooth has a first maximum chain-engaging width defined in an axial direction parallel to the rotational center axis. The second tooth has a second maximum chain-engaging width defined in the axial direction. The first tooth has a first width defined in the axial direction. The first width is defined at a reference position radially outward spaced apart from a center point of a reference line by 1.5 mm. The reference line is defined to connect centers of neighboring pins of the bicycle chain engaged with the plurality of chain-driving teeth when viewed from the axial direction. The first width is 70% or more of the first maximum chain-engaging width.

A drive system for a vehicle includes a chain ring and a drive chain. The chain ring has a plurality of teeth serially arranged and joined to one another. A first subset of teeth has a first outer face that applies a lateral pressure to a link of a drive chain in a first direction. A second subset of teeth has a second outer face that applies a lateral pressure to another link of a drive chain in a second direction. The teeth all have substantially the same width. The top surfaces of the teeth are offset from the centerline of the drive chain. The centerlines of the top surfaces of the teeth are arranged asymmetrically on one side of the centerline of the drive chain.

A device for translating a scraper of droppings covering a corridor of a livestock building. The device includes a chain secured to the scraper, a first sprocket secured to a first end of the chain and a second sprocket secured to a second end of the chain. The first sprocket is rotated by a first motor and the second sprocket is rotated by a second motor in the opposite direction of the first sprocket. A controller controls power supply to the motors and takes states including: a driving state of the scraper in a first direction, wherein the first motor is supplied with power and the power supply of the second motor is cut off; and a driving state of the scraper in a direction opposite to the first direction, wherein the second motor is supplied with power and the power supply of the first motor is cut off.

A driving sprocket for a marine-type chain whose links have a section of diameter between 8 and 20 millimeters, intended to be used in the agricultural field. The sprocket includes a main cylindrical recess between two lateral flanges and a plurality of regularly spaced forks projecting radially from the recess, delineating housings intended for receiving every other link of the substantially flat chain. The flanges extend beyond the recess over a height substantially equal to the width of a link of the chain.

A sprocket having one or more mud relief portions offset from the midpoint between adjacent teeth. The sprocket has a plurality of teeth, and saddle sections disposed on the periphery of the sprocket between each of the plurality of teeth. The saddle has a seat disposed at a midpoint between the adjacent teeth, and one or more mud relief portions disposed on each side of the seat. The mud relief portions are recessed within the sprocket. The mud relief portions may be mirror images of one another, or the saddle may alternatively be asymmetrically formed.

A chain ring for engaging a chain link of a chain, the chain ring including an inner edge fully circumscribing both an opening and an axis of rotation, an inner surface extending between the inner edge and an outer edge where a plurality of chain ring teeth emanate, and a plurality of ramps disposed about the inner surface, wherein at least one of the plurality of ramps includes a lifting surface for initiating lift of a chain without assistance from the plurality of chain ring teeth. The lifting surface extends radially along the inner surface toward the outer edge, and the at least one ramp has a first end proximate the inner edge and a second end proximate the outer edge. The second end of the at least one lifting surface terminates before reaching the bottom of a trough positioned between two or more of the plurality of chain ring teeth.

A bicycle rotor comprises a base portion and at least one chain engagement portion. The base portion is configured to rotate around a rotational center axis of the bicycle rotor. The base portion is at least partly made of a first resin material. The first resin material has a first Young's modulus. The at least one chain engagement portion is provided on the base portion. The at least one chain engagement portion is at least partly made of a second resin material. The second resin material has a second Young's modulus. The first Young's modulus is higher than the second Young's modulus.

A sprocket assembly is provided. The assembly includes a sprocket frame having a central body and a first ledge portion body. The first ledge portion has a first aperture extending therethrough. The assembly further includes a first removable tooth having a first tip portion, first and second landing portions, and a first extension portion. The first tip portion has first and second ends. The first extension portion extends from the second end and has an aperture extending therethrough. The assembly further includes a first screw extending through the first aperture in the first ledge portion and the aperture in the first extension portion to removably couple the first extension portion to the first ledge portion.