A cam wheel for accommodating a cam belt has a hub plate for mounting on a shaft and a plurality of cylindrical bolts including belt support areas for accommodating the cam belt. The cylindrical bolts are attached to the hub plate such that gaps are formed between the cylindrical bolts for accommodating cams of the cam belt in a positive locking manner. At a first end of the respective cylindrical bolts a shaft is formed which is inserted into an opening in the hub plate. The shaft is reshaped at its end to form a closing head in such a manner that the hub plate is clamped in between the closing head and a shoulder is formed between the shaft and the belt area support.

A high torque sprocket includes a body defining an outer periphery and a hub section defining an inner surface for engaging a bushing. A continuous toothed structure is disposed on the outer periphery of the body, and a textile reinforcement embedded in the body adjacent the inner surface of the hub section. The body is formed of a castable polymer material. In some cases, one or two optional flanges are disposed on side(s) of the body immediately adjacent the continuous toothed structure, in some aspects, a textile reinforcement may be embedded in a surface of the flange(s) immediately adjacent the continuous toothed structure. In some aspects, the high torque sprocket further includes a textile reinforcement embedded in the continuous toothed structure outer surface, and the textile reinforcement is selected from nylon, cotton, aramid, PTFE, and mixtures thereof.

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.

A transmission element for a transmission such as a continuously variable transmission, including an elongate flexible endless carrier element provided with a number of receiving spaces with an opening and with a passage extending through the number of receiving spaces in the longitudinal direction of the carrier element, a number of engaging elements which are each received in a receiving space for movement between an active position and a passive position and which in the active position protrude further inward than in the passive position and at least out of the opening of this receiving space so as to be able to engage in the active position with a pulley of the transmission, and a spring element for providing resistance for each of the number of engaging elements during movement from the active position in the direction of the passive position.

An apparatus includes a non-metal high torque sprocket and non-metal bushing. The non-metal high torque sprocket includes a body defining an outer periphery and a hub section defining an inner surface for engaging a bushing, a continuous toothed structure disposed on the outer periphery of the body, and a textile reinforcement embedded in the body adjacent the inner surface of the hub section, wherein the body is formed of a castable polymer material. The hub section inner surface is a tapered shape, and is adapted to engage a conventional QD bushing or a taper-lock bushing. The non-metal bushing is engageable by the hub section inner surface of the high torque sprocket. The non-metal bushing may be formed of a castable polymer material, which may optionally include ultra-high molecular weight powder. According to some embodiments, the non-metal bushing is a QD bushing.

A sprocket (10) is capable of engaging with engaging portions (22) on an elastic endless belt (21). On a tooth face (F) of a tooth (12) of the sprocket (10), a portion of a tooth base on at least one side of a center line (O.sub.1) of the tooth (12) is a tooth base surface (12b), and the tooth base surface (12b) is inclined relative to the center line (O.sub.1) of the tooth (12) at an angle (A.sub.1) in a range of 0 or greater to 7.5 or less so as to approach the center line (O.sub.1) of the tooth (12) towards a tooth tip surface (12d).

The present invention relates to a toothed belt including: a back portion; a tension member embedded in the back portion in a belt longitudinal direction and including a twisted cord including a steel fiber; a plurality of belt teeth formed on an inner peripheral side of the back portion along the belt longitudinal direction; and a cover layer provided between the tension member and a belt tooth bottom formed between the belt teeth, in which the cover layer has a thickness in a range of 0.2 mm to 1.0 mm, and the back portion, the belt teeth, and the cover layer are integrally formed of a thermoplastic elastomer.

A driven sprocket configured for rotational use in a linear actuator is provided. The driven sprocket includes an outer circumferential surface extending radially from a main body. The outer circumferential surface has a plurality of spaced apart gear teeth configured to engage corresponding structures of a drive belt. An upper rim and a lower rim bound the outer circumferential surface and are configured to maintain a drive belt in an engaged position with the gear teeth. A plurality of internal apertures extend therethrough and are configured to receive portions of a lead screw and portions of a torque limiter. A plurality of spaced apart apertures are configured to receive fasteners configured to secure the torque limiter to the driven sprocket in a manner such that rotation of the driven sprocket results in rotation of the torque limiter.

A motor assembly may comprise: a motor rotor shaft; and a flange attached to the motor rotor shaft, at least a part of an inner surface of the flange contacted with a first part of a circumferential surface of the motor rotor shaft, wherein the motor rotor shaft comprises: a toothed pulley directly machined on a second part of the circumferential surface of the motor rotor shaft to be coupled with a drive belt, the toothed pulley of the motor rotor shaft having a diameter smaller than the first part of the motor rotor shaft contacting the flange; and a step part disposed between the first and second parts of the motor rotor shaft, the step part of the motor rotor shaft having a diameter gradually increasing from the toothed pulley to the first part of the motor rotor shaft contacting the flange.

A sprocket guard comprising a sprocket having sprocket radial spokes, and having teeth on an outer perimeter, the teeth disposed in a plane CL1, each sprocket radial spoke communicating with a first cylindrical surface, a circular member having circular member radial spokes, and each circular member radial spoke communicating with a second cylindrical surface, a collar having an outer cylindrical surface, a fastener engaging the collar, the first cylindrical surface and the second cylindrical surface engaging the outer cylindrical surface, all coplanar in a plane CL2, and plane CL1 is offset from plane CL2.