Various exemplary embodiments relate to an engine including a cylindrical cassette that converts linear into rotational motion. The linear motion is provided by a normal cylinder and valve mechanism driving pistons in a reciprocating motion, and the rotational motion is transmitted to an output shaft. Further embodiments relate to methods of converting linear motion to rotational motion by using a cylindrical cassette.

The present invention addresses the problem of providing a one-way clutch and a one-way clutch-equipped rotating damper device with which it is possible to achieve size reduction. A pawl portion of a slide member comprises a withdrawal surface and an engaging surface. When a gear member rotates toward one side, as inner teeth and the withdrawal surface abut each other, the slide member slides in a sliding direction and the pawl portion is withdrawn from the inner teeth, whereby the gear member rotates independently of a rotor shaft. When the gear member rotates toward the other side as the inner teeth and the engaging surface abut each other, the inner teeth and the engaging surface become engaged, whereby the gear member and the rotor shaft rotate integrally.

The present invention addresses the problem of providing a one-way clutch and a one-way clutch-equipped rotating damper device with which it is possible to achieve size reduction. A pawl portion of a slide member comprises a withdrawal surface and an engaging surface. When a gear member rotates toward one side, as inner teeth and the withdrawal surface abut each other, the slide member slides in a sliding direction and the pawl portion is withdrawn from the inner teeth, whereby the gear member rotates independently of a rotor shaft. When the gear member rotates toward the other side as the inner teeth and the engaging surface abut each other, the inner teeth and the engaging surface become engaged, whereby the gear member and the rotor shaft rotate integrally.

A fluid vacuum pump includes a motor assembly including a single motor or multiple motors, where one motor may be configured for operation in a first medium and another motor may be configured for operation in a second medium; an impeller assembly including a single impeller, which may of a fixed or variable configuration, or multiple impellers, where one impeller may be configured for operation in a first medium and another impeller may be configured for operation in a second medium; and a linkage operatively connecting and adjustably transmitting power from the motor assembly to the impeller depending on the type of medium present.

A brake roller may comprise a brake shaft and a brake stack assembly located around the brake shaft. A one-way jaw clutch assembly may be configured to apply a force to the brake stack. A roller shell may be located radially outward of the brake stack. The one-way jaw clutch assembly may be configured to vary the force applied to the brake stack in response to a rotation of the roller shell in a circumferential direction.

A one-way wedge clutch, including: an axis of rotation; an inner race having a first radially outwardly facing surface; an outer race located radially outward of the inner race and including a first radially inwardly facing surface with a plurality of radially inwardly extending ramps; at least one wedge plate radially disposed between the inner and outer races and including: at least one second radially inwardly facing surface; and, at least one second radially outwardly facing surface including a plurality of radially outwardly extending ramps engaged with the plurality of radially inwardly extending ramps; and, at least one resilient element: engaged with the at least one wedge plate; and, urging at least a portion of the at least one second radially inwardly facing surface toward at least a portion of the first radially outwardly facing surface.

A one-way wedge clutch, including: an axis of rotation; an inner race having a first radially outwardly facing surface; an outer race located radially outward of the inner race and including a first radially inwardly facing surface with a plurality of radially inwardly extending ramps; at least one wedge plate radially disposed between the inner and outer races and including: at least one second radially inwardly facing surface; and, at least one second radially outwardly facing surface including a plurality of radially outwardly extending ramps engaged with the plurality of radially inwardly extending ramps; and, at least one resilient element: engaged with the at least one wedge plate; and, urging at least a portion of the at least one second radially inwardly facing surface toward at least a portion of the first radially outwardly facing surface.

A coil spring unit includes a coil spring; and a metal plate supporting the coil spring, the metal plate including a plurality of supporting portions cooperative with each other to support the coil spring, wherein the supporting portions are provided by bending the metal plate at bending lines and have supporting surfaces substantially perpendicular to the bending lines, respectively, and wherein the supporting surfaces are substantially parallel with outside tangential lines of the coil spring and support the coil spring.

A ratchet device for providing anti-reverse locking for a grounded slack comprises a pinwheel having flexible angled spokes circumferentially protruding therefrom and a pinion ring into which the pinwheel fits includes a plurality of angled teeth with which the angled spokes mate. The spokes flex and slide over the pinion ring teeth when the ratchet is advanced in a forward direction, and lock against the teeth when the ratchet is not being advanced.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.