Dust cover installation tool configured for placement of a dust cover in an annular opening of an idler pulley includes a frame and a cap press. The frame includes an actuator end core, an opposed placement plate, and at least first and second arms extending therebetween, and a third arm disposed between the first and second arms. The cap press includes a press plate and a rotatable threaded rod extending through a threaded bore in the actuator end core. Rotation of the threaded rod in a first direction within the threaded bore advances the press plate toward the placement plate.

Uncoupling pulley having a longitudinal axis, and including a wheel rim having a first zone, to receive a belt connecting the wheel rim to a first power transmission element, and second zone situated in the axial extension along the direction defined by the longitudinal axis of the pulley, of the first zone; a hub to be secured to a second power transmission element; one of the power transmission elements being driving, and the other being driven; a ring mounted below the second zone of the wheel rim and around the hub, so the ring can rotate, around the longitudinal axis, relative to the wheel rim and/or the hub; an elastically deformable element mounted between the hub and the ring; and a unidirectional clutch having an end fastened to the ring and the remaining part of which is mounted below the second zone of the wheel rim and above the ring.

Uncoupling pulley having a longitudinal axis, and including a wheel rim having a first zone, to receive a belt connecting the wheel rim to a first power transmission element, and second zone situated in the axial extension along the direction defined by the longitudinal axis of the pulley, of the first zone; a hub to be secured to a second power transmission element; one of the power transmission elements being driving, and the other being driven; a ring mounted below the second zone of the wheel rim and around the hub, so the ring can rotate, around the longitudinal axis, relative to the wheel rim and/or the hub; an elastically deformable element mounted between the hub and the ring; and a unidirectional clutch having an end fastened to the ring and the remaining part of which is mounted below the second zone of the wheel rim and above the ring.

A decoupler pulley is provided for automotive belt-driven accessory drives, which utilizes a single torsion coil spring that provides torsional resiliency and overrunning functionality. As the torsion spring expands it increasingly pinches a bushing disposed between a radially expansible hub and pulley to thereby provide proportional damping.

A decoupler pulley is provided for automotive belt-driven accessory drives, which utilizes a single torsion coil spring that provides torsional resiliency and overrunning functionality. As the torsion spring expands it increasingly pinches a bushing disposed between a radially expansible hub and pulley to thereby provide proportional damping.

One embodiment is a system comprising an internal combustion engine including an output shaft, a pulley system structured to be driven by the output shaft, a first alternator and a second alternator structured to be driven by the pulley system, and an electromagnetic clutch integrated within one of the pulley system, the first alternator and the second alternator and structured to selectably couple and decouple at least one of the first alternator and the second alternator from the output shaft. The system includes a controller in operative communication with the internal combustion engine system and structured to evaluate power demand and power production capability parameters of the system and to control the electromagnetic clutch to engage or disengage in response to the evaluation.

A pulley and a structure having the pulley connected with a driven unit are provided. The pulley includes a wheel portion and a lug portion. The wheel portion includes two circular end surfaces opposing each other and a side surface connecting the two end surfaces. The side surface includes a main arc face and a branch arc face. The branch arc face has a head end connected to the main arc face and a tail end configured to connect a strap. The branch arc face has a width in an axial direction of the wheel portion smaller than a width of the main arc face. The lug portion is fixed to the wheel portion, disposed at a position adjacent to the branch arc face along the width of the main arc face and extends to protrude beyond the branch arc face in a radial direction of the wheel portion.

A pulley and a structure having the pulley connected with a driven unit are provided. The pulley includes a wheel portion and a lug portion. The wheel portion includes two circular end surfaces opposing each other and a side surface connecting the two end surfaces. The side surface includes a main arc face and a branch arc face. The branch arc face has a head end connected to the main arc face and a tail end configured to connect a strap. The branch arc face has a width in an axial direction of the wheel portion smaller than a width of the main arc face. The lug portion is fixed to the wheel portion, disposed at a position adjacent to the branch arc face along the width of the main arc face and extends to protrude beyond the branch arc face in a radial direction of the wheel portion.

A strap connector, a robotic arm and a robot are provided. The strap connector includes a core, a strap and a pulley. The core includes a belly portion and a neck portion fixed to the belly portion. The neck portion has a width tapering in a direction away from the belly portion. The pulley defines a core chamber in which the core is received, the core chamber is accessible through an opening. The strap is connected to the core and extending out of the core chamber through the opening. The core chamber has two inner side walls opposing each other and extending from the opening. The neck portion is disposed closer to the opening than the belly portion. The two inner walls of the core chamber clamp the neck portion and the strap when the strap is tensioned.

A torsional damper is provided and is equipped with a hub fixed to a rotary shaft and having an outer circumferential surface circumferentially around the rotary shaft, an annular vibration ring having an inner circumferential surface circumferentially around the rotary shaft and with a diameter larger than that of the outer circumferential surface of the hub, and a rubber ring in a compressed state between the outer circumferential surface of the hub and the inner circumferential surface of the vibration ring, that is formed from a rubber composition containing EPDM as a main component, and has a loss coefficient (tan δ) of 0.18 or more when the surface temperature is 60±5° C., wherein when subjected to a resonance point tracking method, the maximum attained surface temperature (Tmax) of the rubber ring during continuous excitation at the resonance point and the rubber fitting width (b) satisfy a specific relational expression.