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.

Ring tensioners having a plurality of rungs that extend from a first side to an opposite second side of the ring tensioner, in use, the rungs engaging between the teeth of a toothed belt. Both the first side and the second side of the ring tensioner are not continuous but have gaps. The gaps on the first side alternate with the gaps on the second side. The ring tensioners may be formed from a single length of wire.

A pulley assembly for a compound archery bow comprises an axle, a draw cable pulley, and a pair of split-buss let-out pulleys positioned on opposite sides of the draw cable pulley. Each secondary cable of a split-buss end of a power cable is wound in a spiral arrangement around a corresponding split-buss let-out pulley. As the bow is drawn, the pulley assembly rotates, the draw cable pulley lets out a draw cable, and each split-buss let-out pulley lets out the corresponding secondary cable. The spiral arrangement results in lateral movement, away from the draw cable pulley, of a contact point of the corresponding secondary power cable on each split-buss let-out pulley as the bow is drawn. The spiral arrangement can include a corresponding spiral groove on each split-buss let-out pulley.

A belt drive system comprising a belt having a plurality of longitudinally spaced belt teeth, the belt further comprising a longitudinal groove extending in the endless direction of the belt through the belt teeth, a sprocket comprising a plurality of sprocket teeth on an outer circumference of the sprocket, each of the sprocket teeth extending parallel to the rotation axis, and each sprocket tooth configured to be received between adjacent belt teeth, and a first planar fin extending from at least one side of a sprocket tooth, the first planar fin configured to cooperatively engage the longitudinal groove, the first planar fin extending in a direction normal to a sprocket axis of rotation, the first planar fin having a width no greater than 20% of a sprocket groove width (W).

A pulley apparatus includes a pulley wheel, support member, and retention member configured to prevent a cable from inadvertently entering gaps defined between the support member and the pulley wheel. The retention member extends inwardly from the support member towards the pulley wheel to overlap at least a portion of the gaps. A cable retention device includes the retention member and can extend inwardly from the support member and overlap at least a portion of the gap. The retention member can include a sloped surface for funneling the cable toward the pulley wheel and a bottom surface to overlap the gap.

A filtering pulley has a hub configured to be fixed to a shaft for rotation thereabout, a crown mounted coaxial and rotationally free on the hub, and a plurality of elastic groups arranged circumferentially with respect to the hub and to the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown. The first elements have at least two spokes, carried by an actuator that is made of two portions that are selectively geared between them to selectively connect the crown to the hub.

A driving apparatus for a washing machine includes a clutch main body in which a brake drum is located inside; a clutch operation unit installed at one side of the clutch main body, the clutch operation unit including a brake lever and a clutch lever which rotates together when the brake lever operates; a clutch coupler located at the bottom of the clutch main body, the clutch coupler moving up and down by the clutch lever; a decelerator located at the bottom of the clutch coupler; a rotating driving means located at the bottom of the decelerator; a washing shaft in which a pulsator is coupled to the top end; and a dewatering shaft in which the washing shaft is rotatably coupled inside and a washing tub is coupled to the top end thereof.

A belt-roller arrangement with a deflecting roller and an endless flexible belt and a method for guiding such a belt over such a roller are disclosed. The roller body of the roller includes two deformable roller body segments and a rigid roller body segment part which isin an axial directionpositioned between these two deformable segments. The belt is entirely guided over the central rigid segment part and at least partially over both deformable segments. The belt run is automatically corrected.

A belt drive system comprising a belt having a plurality of longitudinally spaced belt teeth, the belt further comprising a longitudinal groove extending in the endless direction of the belt through the belt teeth, a sprocket comprising a plurality of sprocket teeth on an outer circumference of the sprocket, each of the sprocket teeth extending parallel to the rotation axis, and each sprocket tooth configured to be received between adjacent belt teeth, and a first planar fin extending from at least one side of a sprocket tooth, the first planar fin configured to cooperatively engage the longitudinal groove, the first planar fin extending in a direction normal to a sprocket axis of rotation, the first planar fin having a width no greater than 20% of a sprocket groove width (W).

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.