A sintered pulley may include a body of a metal alloy and configured with a substantially annular shape. The body may include a first face of contact with a crankshaft, a second face of contact with a securing element, and a concentric hole for associating the pulley with the crankshaft. The second face of contact may have a region of a point of contact with the securing element disposed proximate to the hole. The region of the point of contact may have a density of between 7.3 and 7.5 g/cm.sup.3.

A continuously variable transmission with an annular band body including grooves meshable with movable teeth provided on a second pulley and a biasing unit configured to bias the movable teeth radially outwardly of a shaft portion is provided with a hydraulic control unit configured to reduce a hydraulic pressure in a second oil chamber when a speed ratio reaches a predetermined speed ratio at which the grooves are meshed with the movable teeth.

A toothed pulley includes a cylindrical metallic core and a resin portion including teeth. The metallic core has, at one end thereof in the axial direction, an outward flange projecting outward in the radial direction. The outward flange has a radially outer peripheral surface that is a rotation prevention shape having a plurality of parts displaced inward in the radial direction from a cylindrical surface of the radially outer peripheral surface. The radially outer peripheral surface of the outward flange is covered by the resin portion.

Embodiments of the present disclosure relate to a transmission gear and a deceleration mechanism including the same. The transmission gear includes a metal ring; and a plastic gear member integral with the metal ring by injection molding, the metal ring is coaxially wrapped in the plastic gear member and provided with a locating portion for locating the metal ring in an injection mold, the plastic gear member having an outer circumference that is tooth-shaped, and the plastic gear member being formed with an input hole thereon through which an input shaft passes, an outer ring surface of the metal ring being adjacent to the outer circumference, and an inner ring surface of the metal ring having a diameter greater than or equal to that of the input hole. Since almost no shrinkage occurs to the plastic gear member during injection molding, such a transmission gear has good dimensional accuracy, strength and rigidity.

A synchronous belt drive system comprising a first obround sprocket having a toothed surface and at least one linear portion disposed between two arcuate portions, the arcuate portions having a constant radius, the linear portion having a predetermined length, a sprocket having a toothed surface, the sprocket engaged to the first obround sprocket by an endless toothed member, and the first obround sprocket having a magnitude and a phase such that an angular displacement timing error between the sprocket and the first obround sprocket is less than 1.5 degree peak to peak.

A split drive sprocket assembly includes: a first sprocket portion and a second sprocket portion configured to be joined along an opposing mating surface to form a cylindrical sprocket body; a series of teeth extending radially from a circumferential end of the first sprocket portion and the second sprocket portion; a first shoulder connected to the first sprocket portion and extending radially so as to extend from an axial further than the teeth extends from the axial and spaced axially apart from the teeth; a second shoulder connected to the second sprocket portion and extending radially so as to extend from the axial further than the teeth extends from the axial and spaced axially apart from the teeth. The first sprocket portion and the second sprocket portion are configured to engage a belt with the teeth and the first and second shoulder are configured to overlap with the belt while the teeth are engaged with the belt.

A drive clutch having an engine braking feature for a continuously variable transmission is provided. The drive clutch includes a post that is coupled to an output of an engine. A fixed sheave, coupled to the post, has a fixed sheave belt engagement face. A movable sheave assembly that includes a movable sheave belt engaging face, is configured to move axially on the post to move the movable sheave belt engaging face in relation to the fixed sheave belt engaging face depending on a rotational speed of the drive clutch. An idler bearing is mounted on the post at least in part between the movable sheave belt engaging face and the fixed sheave belt engaging face. The idler bearing includes a one-way rotational assembly and has an outer belt engaging surface with outward extending cogs configured to engage teeth of a belt to prevent slippage during engine braking.

Multipart sprocket wheel adapted to engage modular belt modules in a conveyor belt, where said multipart sprocket wheel comprises:—two or more periphery elements, each element having an outer and and inner edge, where sprocket teeth are provided on the outer edge, and where the inner edge has an engagement surface, and where each element has means for being fastened to and adjacent periphery element, such that the two or more periphery elements outer edges forms a full circle;—one or more adapter members where each of said adapter members has an outer and an inner face, said outer face suitable to firmly engage the inner edge of one or more periphery elements, and said inner face adapted to engage a conveyor drive axle.

The present invention relates to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same, and more particularly, to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same which includes a disk-shaped outer body that receives power from the outside, an inner body that is coupled to the inside of the outer body, and at least one load cell formed between the outer body and the inner body.

A toothed-belt drive includes a toothed belt, at least one driving element attached to the toothed belt, and a toothed disk with tooth recesses for driving teeth of the toothed belt and driving element recesses for driving the at least one driving element. The driving element forms a connecting element that can be connected to an element to be driven.