A rotation transmission device is provided which includes, in its housing, an electromagnetic clutch, and a two-way clutch by which a first shaft and a second shaft are selectively engaged with, and disengaged from, each other. A rolling bearing is disposed at one axial end of the housing, and supports the second shaft and the housing. Locking arrangements prevent relative axial movement between the second shaft and the rolling bearing, and between the rolling bearing and the housing. A movement restricting arrangement is disposed at the other axial end of the housing, and restricting movement of the electromagnetic clutch toward the other axial end of the housing.

The present disclosure relates to an apparatus for a torque limiter, comprising an indication device configured to provide an indication that the torque limiting device has tripped, and of the direction of torque applied to the torque limiting device when the torque limiting device tripped, in use.

A system for powering a prosthetic arm is disclosed. The system includes at least one internal battery located in the prosthetic arm, at least one external battery connected to the prosthetic arm, and a master controller configured to connect either the at least one internal battery or the at least one external battery to a power bus to power the prosthetic arm.

A braking assembly is disclosed comprising a shaft, a brake cage being rotatable with the shaft, an earth ring extending circumferentially around the brake cage, at least one engagement member coupled to the shaft, and a braking mechanism configured for selectively applying a force to the brake cage for slowing or preventing rotational movement of the brake cage such that the shaft rotates relative to the brake cage, and wherein the braking assembly is configured such that when the shaft rotates relative to the brake cage, said at least one engagement member is urged to engage the earth ring such that rotation of the shaft is inhibited or prevented. The earth ring may be replaced with an output shaft such that the assembly operates as a clutch assembly.

In at least some implementations, a multiple position actuator, includes a motor, a gearset driven by the motor, an output driven by the gearset between at least two positions, and a clutch arranged between the gearset and the output to permit relative rotation between the output and gearset. The gearset, output and clutch may be coaxially arranged. The clutch may include at least two movable elements that move relative to one or both of the output and gearset to permit relative rotation between the clutch and gearset in two opposed rotational directions. In at least some implementations, the gearset provides a torque to the output that is at least 50 times greater than the torque of the motor.

A clutch unit includes a lever-side clutch part to control transmission and interruption of rotational torque input through a lever operation and a brake-side clutch part to transmit the rotational torque from the lever-side clutch part to the output side and interrupt rotational torque reversely input from the output side. The brake-side clutch part includes an outer ring constrained in rotation, an output shaft to output the rotation, cylindrical rollers to control interruption of the rotational torque reversely input from the output shaft and transmission of the rotational torque input from the lever-side clutch part through engagement and disengagement between the outer ring and the output shaft, a friction ring to apply a rotational resistance to the output shaft, and a variable part to change the rotational resistance applied to the output shaft between the transmission and the interruption of the rotational torque.

A clutch unit includes a lever-side clutch part to control transmission and interruption of rotational torque input through lever operation, and a brake-side clutch part to transmit the rotational torque from the lever-side clutch part to an output side, and interrupt rotational torque reversely input from the output side. The brake-side clutch part includes a cover constrained in rotation, an output shaft to output the rotation, an inner ring to receive the rotational torque input from the lever-side clutch part, and a cylindrical roller to control interruption of the rotational torque from the output shaft and transmission of the rotational torque from the inner ring through engagement and disengagement between an outer ring and the output shaft. The inner ring includes a slide gear which meshes with the cover during interruption of the rotational torque and is released from the meshing state during transmission of the rotational torque.

A clutch unit includes a lever-side clutch part to control transmission of rotational torque input through a lever operation, and a brake-side clutch part to transmit the rotational torque from the lever-side clutch part to an output side, and interrupt rotational torque from the output side. The brake-side clutch part includes an outer ring constrained in rotation, an output shaft configured to output the rotation, a cage arranged between the outer ring and the output shaft to receive the rotational torque from the lever-side clutch part, and a cylindrical roller to control the interruption of the rotational torque from the output shaft and the transmission of the rotational torque input from the cage through engagement and disengagement between the outer ring and the output shaft.

A jamming roller lock with a housing and at least two jamming discs, which are arranged in the housing such that they can be rotated and which each comprise at least one recess, in which a jamming roller is located, at least one driving projection and at least one driven projection, wherein the jamming discs are arranged and designed in such a way that a rotation of the jamming discs can be achieved by driving the driving projections and a rotation of the jamming discs is prevented by driving the driven projections.

A clutch assembly is disclosed. The clutch assembly includes a rotational component including a hub configured to rotate relative to a mounted component; and a clutch configured to selectively transmit rotational input from the mounted component to the hub. The clutch includes a first ring including a first surface; a second ring including a second surface; a cage defining a plurality of pockets which are bounded by the first surface and the second surface; and a plurality of rollers each positioned in a respective one of the plurality of pockets. The first ring includes a pair of ramps in each pocket. The second ring rotates relative to the first ring when the plurality of rollers are in a neutral position between the pair of ramps, and the second ring rotates with the first ring when the plurality of rollers are positioned on either of the ramps.