A composite crank has a first metal member, a second metal member, a connecting space, an external fiber member, and a reinforcement fiber member. The first metal member and the second metal member are arranged at a spaced interval to form the connecting space in the composite crank and between the first metal member and the second metal member. The external fiber member is wrapped on and around the first metal member, the second metal member, and the connecting space. The reinforcement fiber member is disposed between the first metal member and the second metal member and has two overlaying segments respectively bonding to two opposite inner sides of the external fiber member along a thickness direction of the composite crank and a rib disposed in the connecting space and connecting with the two overlaying segments. The composite crank is light in weight, and structural strength in a thickness direction thereof can be enhanced.

A generator (100) and/or machine (110) generating mechanical energy and functioning on the principle of exploitation of an energy allowing the existence of centrifugal forces (Fc) on masses (120) being displaced in rotation, into an effective elliptic trajectory (150), about a respective shaft (128) freely rotatably mounted on a plate (122) itself freely rotatably mounted on a main shaft (202) freely rotatably mounted on a fixed chassis (140). The centrifugal forces generated by the masses (120) transmit a rotational oscillating movement of the plate (122) transferred by a mechanical energy transmission mechanism into a continuous rotation movement to an output torque mechanism freely mounted on the main shaft (202).

Provided is a sliding component capable of stably reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component has a sliding surface relatively sliding with eccentric rotation, in which the sliding surface includes a land and a plurality of dynamic pressure generation mechanisms arranged in a circumferential direction, the dynamic pressure generation mechanism includes a shallow groove portion and a deep groove portion, and the shallow groove portion surrounds a circumference of the deep groove portion and communicates with the deep groove portion.

Provided is a sliding component capable of stably reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component has an annular shape with high-pressure and low-pressure fluids facing inside and outside of the sliding component and has a sliding surface relatively sliding with eccentric rotation. The sliding surface is provided with a plurality of high-pressure grooves open to a space in which the high-pressure fluid exists and a plurality of low-pressure grooves open to a space in which the low-pressure fluid exists. The high-pressure and low-pressure grooves are arranged in a circumferential direction.

The rotary body according to the present invention is made of resin and attached to a crankshaft. The rotary body has an outside plate element and an inside plate element which are attached to an outside surface and an inside surface of an arm portion of the crankshaft, respectively, and a pair of filler elements disposed between the outside plate element and the inside plate element and on both sides of the arm portion. The outside plate element and the pair of the filler elements are coupled to each other, and the pair of the filler elements and the inside plate element are coupled to each other.

The rotary body according to the present invention is made of resin and attached to a crankshaft. The rotary body has an outside plate element and an inside plate element which are attached to an outside surface and an inside surface of an arm portion of the crankshaft, respectively, and a pair of filler elements disposed between the outside plate element and the inside plate element and on both sides of the arm portion. The outside plate element and the pair of the filler elements are coupled to each other, and the pair of the filler elements and the inside plate element are coupled to each other.

A variable vane assembly for a gas turbine engine, the variable vane assembly including: a plurality of vanes arranged into a plurality of stages, each one of the plurality of vanes being configured for rotation about an axis through movement of a vane arm secured to each one of the plurality of vanes at one end and a sync ring of each one of the plurality of stages at another end; and a plurality of bell cranks operably coupling the sync ring of each one of the plurality of stages to a self-retained linkage via a stud of each one of the plurality of bell cranks, the stud of each one of the plurality of bell cranks being rotatably received in a corresponding opening of the self-retained linkage in an alternating fashion such that only a single shear interface is provided between each one of the plurality of bell cranks and the self-retained linkage.

A crank device provided with an upstream lever and with a downstream lever. The crank device includes a phase shifter system connected to the upstream lever and to the downstream lever so that movement in rotation of the upstream lever about an axis of rotation induces movement in rotation of the downstream lever about the axis of rotation, the phase shifter system comprising a linear actuator mechanism carried by the upstream lever, the linear actuator mechanism having an outlet rod, the outlet rod having only one degree of freedom of movement in translation relative to the upstream lever, the outlet rod being connected via an outlet helical connection to the downstream lever so that movement in translation of the outlet rod generates movement in rotation of the downstream lever about the axis of rotation.

A roller for a conveyor system comprises a nonlinear bore hole to facilitate retention of the roller on a roller-receiving portion of a corresponding shaft. A nonlinear bore hole comprises a central cylindrical portion for receiving a roller-receiving portion of the shaft and unaligned slots in communication with the central cylindrical portion to prevent migration of the roller from the roller-receiving portion.

A drive apparatus to be mounted on a vehicle includes a motor body including a rotor to rotate about a central axis extending in a horizontal direction perpendicular to a direction of travel of the vehicle, and a stator radially outside of the rotor, a housing including a housing portion to house the motor body, oil in a vertically lower region of the housing portion, and a pump to move the oil from the vertically lower region of the housing portion to feed the oil to the motor body. A liquid surface of the oil in the vertically lower region of the housing portion approaches the central axis to bring the oil into contact with the rotor as a result of the vehicle being inclined forward or rearward in the direction of travel.