To provide a cam clutch easily switchable from a torque transmitting state to a freewheeling state even during torque transmission between race members. The cam clutch includes a plurality of cams set between a first race member and a second race member. The first race member and second race member are spaced away in the axial direction along the rotation axis of the first race member. The plurality of cams are disposed between the first race member and the second race member in the axial direction, and the first race member and the second race member are configured to be able to move relatively closer to and away from each other in the axial direction.

A medical handle for pneumatically or hydraulically driven medical instruments or motor units includes a clutch member for mechanical and pneumatic/hydraulic coupling of a corresponding clutch member and a manually operable valve mechanism for selective pressurization of a medical instrument coupled thereto or the motor unit thereof, the valve mechanism being provided with a safety device for preventing pressurization in the case of an uncoupled medical instrument or the motor unit thereof. The clutch member present on the side of the handle is provided to interact with the valve mechanism such that during or by the mechanical coupling operation the latter is automatically opened and/or enabled for manual opening, whereas in the uncoupled state the valve mechanism is closed and/or enabling is cancelled.

A medical handle for pneumatically or hydraulically driven medical instruments or motor units includes a clutch member for mechanical and pneumatic/hydraulic coupling of a corresponding clutch member and a manually operable valve mechanism for selective pressurization of a medical instrument coupled thereto or the motor unit thereof, the valve mechanism being provided with a safety device for preventing pressurization in the case of an uncoupled medical instrument or the motor unit thereof. The clutch member present on the side of the handle is provided to interact with the valve mechanism such that during or by the mechanical coupling operation the latter is automatically opened and/or enabled for manual opening, whereas in the uncoupled state the valve mechanism is closed and/or enabling is cancelled.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

A wedge clutch, including: first and second hubs; an outer ring; a first wedge plate radially disposed between the first hub and the outer ring; a second wedge plate radially disposed between the second hub and the outer ring; and a wedge pin including an actuation ramp axially disposed between the first and second hubs. To transition to a connect mode, in which the first and second hubs are non-rotatably connected to the outer ring, the wedge pin is arranged to rotate in a first rotational direction and the actuation ramp is arranged to displace the first and second hubs away from each other. To transition to a disconnect mode, in which the first and second hubs are rotatable with respect to the outer ring, the wedge pin is arranged to rotate in a second opposite rotational direction to reduce an axial distance between the first and second hubs.

A wedge clutch, including: first and second hubs; an outer ring; a first wedge plate radially disposed between the first hub and the outer ring; a second wedge plate radially disposed between the second hub and the outer ring; and a wedge pin including an actuation ramp axially disposed between the first and second hubs. To transition to a connect mode, in which the first and second hubs are non-rotatably connected to the outer ring, the wedge pin is arranged to rotate in a first rotational direction and the actuation ramp is arranged to displace the first and second hubs away from each other. To transition to a disconnect mode, in which the first and second hubs are rotatable with respect to the outer ring, the wedge pin is arranged to rotate in a second opposite rotational direction to reduce an axial distance between the first and second hubs.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

To provide a simple-structured cam clutch that does not require precise control and is operable with a smaller drive force and less prone to damage on cam surfaces or inner and outer raceways. The cam clutch includes a plurality of cams circumferentially arranged between an inner race and an outer race and supported by a cage member, and a selector capable of changing an orientation of the cams. The selector includes a driven part allowing a rotation angle thereof to be controlled relative to the inner race or outer race to which the cage member is fixedly attached, and a selector body circumferentially displaceable relative to the driven part in a resilient manner by a spring-loaded mechanism. The selector body includes a cam orientation control protrusion capable of changing the orientation of the cams by making contact with the cams.