A locking clutch ratchet wrench (1) is configured such that a clutch ring (500) forms the mid part of aminate like structure. Under torque applying conditions, the compression forces applied to the clutch ring (500) are substantially dissipated around the circumference (507) of the clutch ring. This inwardly directed force clamp against the inherently strong outer surface 405 of the drive element (400). The resultant pseudo laminate structure of the drive element (400), clutch (500) and housing (201, 202) enables the construction of a proportionately stronger ratchet wrench of reduced height or width.

A return stop device with a freewheel having an internal ring, an external ring, and retaining elements arranged in an annular gap therebetween. A flange is provided at the attachment side and a housing part, between which the external ring is clamped, and a clamping device by which the external ring is pressed with its face between the flange and the housing part against a friction area, in order to generate a friction-fitting connection between the flange and the external ring. A release device is provided to at least partially overcome the contact pressure, in order to reduce or remove the friction-fitting connection. The release device includes an actuating organ, which acts upon a first gliding element, displaceable in an operating direction, to act upon a second gliding element, arranged displaceable perpendicular to the operating direction, that acts via a second wedge against the contact pressure upon the housing part.

A return stop device with a freewheel having an internal ring, an external ring, and retaining elements arranged in an annular gap therebetween. A flange is provided at the attachment side and a housing part, between which the external ring is clamped, and a clamping device by which the external ring is pressed with its face between the flange and the housing part against a friction area, in order to generate a friction-fitting connection between the flange and the external ring. A release device is provided to at least partially overcome the contact pressure, in order to reduce or remove the friction-fitting connection. The release device includes an actuating organ, which acts upon a first gliding element, displaceable in an operating direction, to act upon a second gliding element, arranged displaceable perpendicular to the operating direction, that acts via a second wedge against the contact pressure upon the housing part.

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 is stationary relative to the friction block assembly, the friction block assembly is pushed to rotate reversely with 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 is stationary relative to the friction block assembly, the friction block assembly is pushed to rotate reversely with 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 motor assembly is described and includes a housing; a plurality of motors disposed within the housing; and a drive shaft comprising a plurality of interconnected drive shaft segments, wherein each one of the drive shaft segments is driven by a different one of the motors connected to the drive shaft segment via an integrated overrunning clutch.

A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising at least one rotational connecting member arranged in a connection space, a driven connection section of the driven part surrounding a driving connection section of the driving part, the connection space being located radially, with respect to the axis of rotation, between the driving connection section and the driven connection section. The free-wheel comprises at least one barrier, the geometry of which varies depending on the speed of rotation of the driving part, arranged radially between the driving part and the driven part and longitudinally against the connection space, the barrier being constrained to rotate with the driving connection section.

A clutch has an inner race, an outer race spaced from the inner race and forming a radial cavity between the races, and a plurality of sprags disposed in the radial cavity. The sprags have a different coefficient of thermal expansion (CTE) from the inner race, the outer race, or both races, and a sprag cage retains the sprags at a uniform spacing within the radial cavity. When the clutch is at a first temperature, a gap exists between the sprags and the inner race, between the sprags and the outer race, or between the sprags and both races, and the clutch is disengaged. When the clutch is at a second temperature the sprags are in contact with both the races, and the clutch is engaged.

An actuation system is provided comprising an electric motor having a motor output shaft, a first actuator and a transmission system linking the electric motor to the first actuator. The transmission system comprises a drive shaft having an input end and an output end, the output end connected to an input of the first actuator, and a torque limiter. The torque limiter is positioned at an upstream end of the transmission system and connects the motor output shaft of the electric motor to an input end of the drive shaft.

A transmission system for a hybrid power plant, such as a hybrid propulsion system of a marine vessel, is described. The transmission is configured to selectively couple a primary mover and/or a secondary mover to an output of the transmission for providing a power output, and optionally selectively couple the primary mover to the secondary mover, decoupling the output, for electrical energy generation in a compact and light-weight design.