A transmission actuator for a vehicle includes a housing, a first rocker for engaging a toothed wheel, a second rocker for rotating the first rocker to engage the toothed wheel, an engagement rod for rotating the second rocker, a solenoid arranged to displace the engagement rod, and a solenoid control circuit. The solenoid includes an iron core, a wire coil wrapped around the iron core, and a ferromagnetic plunger. The plunger is arranged to linearly displace in a first direction when a first directional current is applied to the wire coil, and linearly displace in a second direction when a second directional current is applied to the wire coil. The solenoid control circuit is arranged supply the first directional current when energized by a power source, and supply a decaying alternating current that includes the first directional current and the second directional current when the solenoid control circuit is de-energized.

A brake-side clutch part includes an outer ring whose rotation is restricted and an output shaft from which rotation is output. The outer ring is provided with a slide gear that meshes with the output shaft when rotational torque is cut off and releases a meshing state with the output shaft when rotational torque is transmitted. The output shaft is provided with an inner gear that meshes with the slide gear so as to be slightly rotatable. An alignment part that aligns a phase of the inner gear with that of the slide gear when rotational torque is cut off, and a centering part that returns the inner gear to a neutral position with respect to the output shaft when rotational torque is transmitted are provided between the inner gear and the output shaft.

A brake-side clutch part includes an outer ring whose rotation is restricted and an output shaft from which rotation is output. The outer ring is provided with a slide gear that meshes with the output shaft when rotational torque is cut off and releases a meshing state with the output shaft when rotational torque is transmitted. The output shaft is provided with an inner gear that meshes with the slide gear so as to be slightly rotatable. An alignment part that aligns a phase of the inner gear with that of the slide gear when rotational torque is cut off, and a centering part that returns the inner gear to a neutral position with respect to the output shaft when rotational torque is transmitted are provided between the inner gear and the output shaft.

A clutch mechanism is used in a rotary power tool having a motor. The clutch mechanism includes an input member to which torque from the motor is transferred and an output member co-rotatable with the input member. The output member defines a rotational axis. A cam surface is formed on one of the input member or the output member. First and second compression springs are carried by the other of the input member or the output member for co-rotation therewith. A follower has a circular cross-sectional shape and is biased against the cam surface by the first and second compression springs. In response to relative rotation between the input member and the output member, the cam surface displaces the follower along a line of action coaxial or parallel with each of the first and second compression springs. The line of action does not intersect the rotational axis.

A clutch mechanism is used in a rotary power tool having a motor. The clutch mechanism includes an input member to which torque from the motor is transferred and an output member co-rotatable with the input member. The output member defines a rotational axis. A cam surface is formed on one of the input member or the output member. First and second compression springs are carried by the other of the input member or the output member for co-rotation therewith. A follower has a circular cross-sectional shape and is biased against the cam surface by the first and second compression springs. In response to relative rotation between the input member and the output member, the cam surface displaces the follower along a line of action coaxial or parallel with each of the first and second compression springs. The line of action does not intersect the rotational axis.

A rotation moment transmission device (1) for a driving device of a furniture comprises a housing (2) comprising a first friction surface (3) having a circular cross-section, a rotation moment transmission member (4) having a rotation axis (DA) and a second friction surface (5), wherein the second friction surface (5) is movable radially with respect to the rotation axis (DA) and the first friction surface (3) and the second friction surface (5) are configured to collaborate for a rotation moment transmission, and a rotation moment introduction member (6) which is rotatable about the rotation axis (DA). One of the rotation moment transmission member (4) and the rotation moment introduction member (6) comprises an engagement member, the other one thereof comprises a contact surface (8, 8′, 8″, 8‴, 8⁗) and the engagement member (7) is configured to the contact the contact surface (8, 8′, 8″, 8‴, 8‴′) such that a twisting of the rotation moment introduction member (6) relatively to the rotation moment transmission element (4) moves the second friction surface (5) with respect to the rotation axis (DA) radially towards the first friction surface (3) or away therefrom.

A unidirectional joint includes a wedge member having a pressure contact portion that comes in pressure contact with an inner circumferential surface of an immovable ring. The wedge member includes a first follower displacing the wedge member to an unlocked position by receiving a pressing force from a release cam when a driving force is input to an input side protrusion and a second follower displacing the wedge member to a locked position by receiving a pressing force from a pressure cam when a driving force is input to an output side rotating part.

Prosthetic devices and, more particularly, modular myoelectric prosthesis components and related methods, are described. In one embodiment, a hand for a prosthetic limb may comprise a rotor-motor; a transmission, comprising a differential roller screw; a linkage coupled to the transmission; and at least one finger coupled to the linkage. In one embodiment, a component part of a wrist of a prosthetic limb may comprise an exterior-rotor motor, a planetary gear transmission, a clutch, and a cycloid transmission. In one embodiment, an elbow for a prosthetic limb may comprise an exterior-rotor motor, and a transmission comprising a planetary gear transmission, a non-backdrivable clutch, and a screw.

Prosthetic devices and, more particularly, modular myoelectric prosthesis components and related methods, are described. In one embodiment, a hand for a prosthetic limb may comprise a rotor-motor; a transmission, comprising a differential roller screw; a linkage coupled to the transmission; and at least one finger coupled to the linkage. In one embodiment, a component part of a wrist of a prosthetic limb may comprise an exterior-rotor motor, a planetary gear transmission, a clutch, and a cycloid transmission. In one embodiment, an elbow for a prosthetic limb may comprise an exterior-rotor motor, and a transmission comprising a planetary gear transmission, a non-backdrivable clutch, and a screw.

A winch for securing a load to a vehicle a is disclosed. The winch includes a mounting bracket with opposed flanges. The winch further includes a drum extending along an axis between a first end and a second end. The drum is mounted relative to the opposed flanges so that the drum is rotatable about its axis. The winch includes a gear received on the drum and a worm configured to mesh with the gear so that a rotation of the worm causes a rotation of the gear. The winch further includes a clutch assembly between the drum and the gear. The clutch assembly is biasable between a first configuration in which the gear is fixed relative to the drum about the axis of the drum and a second configuration in which the gear is rotatable relative to the drum about the axis of the drum.