A pulley assembly (120) for engaging an endless member (118) includes a first pulley (124), a second pulley (126) and at least one transition segment set (128, 130) comprising one or more transition segments (152, 162a, 162b) that are independently movable between an engaged region and a disengaged region to transition the endless member (118) between the first pulley (124) and the second pulley (126). An actuator system (122) includes a support structure (220), an actuator subassembly (222, 226) secured to the support structure (220) and a stator (224, 228). The actuator subassembly (222, 226) includes a follower (250) and a sled (248), which is movable in a circumferential direction between an advanced position and a retreated position, in response to an electromotive force generated on the sled (248) by the stator (224, 228). The follower engages the cam surface (262) of the sled (248) to move in an axial direction between an extended position and a retracted position as the sled (248) moves between the advanced and retreated positions.

The present disclosure relates to a cam wheel for accommodating a cam belt, having a hub plate for mounting on a shaft and a plurality of tappet means including belt support areas for accommodating the cam belt, the tappet means being attached, projecting perpendicularly away from the hub plate and spaced apart from one another, to the hub plate such that gaps are formed between the tappet means for accommodating cams of the cam belt in a positive locking manner.

A synchronous belt drive system having: a synchronous belt with a tensile cord of high-modulus fiber such as glass, carbon, PBO, or aramid; a driver sprocket and at least one driven sprocket, at least one of which is an obround sprocket; and a tensioner having: a base having a cylindrical portion extending axially with a radially outer surface and a receiving portion, an eccentric arm pivotally engaged with the radially outer surface, a torsion spring disposed within the receiving portion, the torsion spring applying a biasing force to the eccentric arm, and a pulley journalled to the eccentric arm. Preferably, no one of the eccentric arm, pulley, or torsion spring is axially displaced along an axis A-A from the others. The obround sprocket has a toothed surface and at least one linear portion disposed between two arcuate portions having a constant radius, the linear portion having a predetermined length.

A drive system for driving a belt is presented. The system comprises a frame, a driving shaft connected to a motor, a controller, a driven shaft, two pulleys connected to the driven and driving shafts, and a belt. The frame supports the driving and driven shafts to mount the belt on the pulleys. A signal element is mounted on and drives with the belt. At least two detection elements are mounted on the frame so that when the signal element passes the detection elements, a signal is generated as the belt moves. The detector elements are connected to a controller which controls the motor so that when the system starts, the belt moves until the signal element generates a signal in a first detector element to fix a zero point of the belt movement. The signal of the second detector element checks the zero point during normal drive operation.

An electric power steering drive pulley assembly includes a motor shaft. The pulley assembly also includes a drive pulley coupled to the motor shaft. The drive pulley includes a radial retention portion having an inner diameter defining a first portion of a central opening that the motor shaft is disposed within. The drive pulley also includes an axial retention portion extending in the axial direction from the radial retention portion, the axial retention portion defining a second portion of the central opening that the motor shaft is disposed within, the inner diameter of the axial retention portion in splined engagement with the motor shaft to rotationally couple the drive pulley to the motor shaft, the axial retention portion including a flange protruding radially inwardly from the inner diameter of the axial retention portion to be disposed in a groove of the motor shaft.

A receiving disk for a segmented pulley transmission is provided. The receiving disk comprises: a generally circular body having a pulley facing side and a rear side, opposite the pulley facing side; at least one mating feature located at the pulley facing side of the body, the mating feature being configured to engage a complimentary mating feature, which is secured to a pulley segment of the segmented pulley transmission, when the pulley segment is in an engaged region; and at least one securing feature located in proximity to the mating feature and configured to secure the complimentary mating feature, when the complimentary mating feature is engaged with the mating feature. A segmented pulley transmission comprising the receiving disk is further provided.

One general aspect includes a composite sprocket. The composite sprocket also includes a skeleton having a connection interface and an outer portion having a rough tooth structure. The composite sprocket also includes an overlay formed on and over the outer portion of the skeleton and may include of a precision material and forming a high precision tooth structure over the rough tooth structure.

A multipart sprocket wheel engages modular belt modules in a conveyor belt. Each multipart sprocket wheel has two or more periphery elements. Each element has an outer edge and an inner edge. Sprocket teeth are provided on the outer edge. The inner edge has an engagement surface. Each element has fasteners for being fastened to an adjacent periphery element. Two or more periphery elements' outer edges form a full circle. One or more adapter members are used. Each adapter member has an outer face and an inner face. The outer face firmly engages the inner edge of one or more periphery elements. The inner face engages a conveyor drive axle.

An electric power steering apparatus includes: a ball nut, which is coupled to a rack bar therein, slides the rack bar, and has a first coupling portion formed to protrude in radial directions from one side of an external circumferential surface such that a fastening member is coupled to the first coupling portion; a nut pulley having a second coupling portion, which is formed to protrude in radial directions from an internal circumferential surface having a hollow therein and which comes in contact with the first coupling portion and to which the fastening member is coupled, and having an external circumferential surface to which the belt is connected and rotates the ball nut; and a deformation preventing member coupled to an opposite end of a portion of the nut pulley in which the second coupling portion is formed.

An apparatus for raising and lowering a cutting tool within a decoking drum, a decoking system and a method of raising and lowering a decoking system cutting tool. Instead of using metallic ropes, chains, or a self-propelled gear-based approach, non-metallic belts are secured at respective ends to a crosshead and one or more counterweights to enable vertical movement of the crosshead that in turn permits vertical movement of the cutting tool throughout the height of the drum. A motorized pulley system controls the movement of the belt, and preferably avoids having the motor be carried by the crosshead. The belts on each pulley are preferably arranged as cooperative sets so that within each set, both primary load belts and secondary load belts are present. Enhanced engagement between at least the primary load belts and the pulleys promotes greater load-bearing capability, while the secondary load belts are sufficiently strong to ensure positional stability of the crosshead and decoking tool upon damage to or failure of one or more of the primary load belts.