A hydraulic shock absorber includes: a cylinder that has an opening portion in a side wall surface on an axle side thereof; a reservoir that stores oil; a control unit that generates a damping force; and a movement prevention member at least a part of which is disposed outside the cylinder and on a vehicle body side of the opening portion, and that obstructs the oil from moving from the axle side to the vehicle body side.

A movement control device comprising a housing with an elongate push rod mounted therein for reciprocal movement along a longitudinal axis between first and second positions, wherein the push rod extends out of said housing in both the first and second positions. A spring comprising a primary axis operable to provide a biasing force on the push rod is further provided in the housing. A damping device comprising a primary axis is located in the housing, wherein the damping device is in continuous engagement with the push rod through its reciprocating movement. The primary axis of the spring and the primary axis of the damping device are not coaxial.

Provided is a robot leg structure that includes a link extending downward from a leg joint, a ground contact portion that comes in contact with a ground, a leaf spring that couples the link and the ground contact portion to each other, and a damping member adjacent to the leaf spring and couples the link and the ground contact portion to each other. With this configuration, the damping member damps the vibration attributed to the leaf spring, making it possible to reliably stabilize the motion of the legs of a robot.

Provided is a robot leg structure that includes a link extending downward from a leg joint, a ground contact portion that comes in contact with a ground, a leaf spring that couples the link and the ground contact portion to each other, and a damping member adjacent to the leaf spring and couples the link and the ground contact portion to each other. With this configuration, the damping member damps the vibration attributed to the leaf spring, making it possible to reliably stabilize the motion of the legs of a robot.

The auxiliary suspension device is relatively neutral at rest and responds in coordination with the existing suspension system upon application of a load. The redundant suspension device has an inflatable bellow that is mounted between a vehicle's frame and an existing vehicle suspension element.

A cab suspension system for a work vehicle includes a front suspension assembly having a bracket configured to fixedly couple to a frame of a cab of the work vehicle. In addition, the front suspension assembly includes a support element having a torsion bar and a pair of longitudinal supports. Each of the pair of longitudinal supports is configured to rotatably couple to a chassis of the work vehicle. The front suspension assembly also includes a damping assembly coupled to the support element and configured to couple to the chassis. The bracket is rotatably coupled to the support element at a pivot joint assembly, and the bracket is configured to position the pivot joint assembly forward of the cab relative to a direction of travel of the work vehicle while the bracket is coupled to the frame of the cab.

A diaphragm unit detachably attached to a damper body, includes: a cylinder in which a liquid is sealed; a piston rod having a piston sliding inside the cylinder on one end side of the piston rod, in which other end side of the piston rod is extended to an outside of the cylinder; and a rod guide having a bottomed cylindrical shape wherein an insertion opening into which the piston rod is inserted is provided at a bottom portion of the rod guide, the rod guide being fixed to a side of an opening of the cylinder into which the piston is inserted to thereby make the piston rod be slidably inserted in a liquid tight manner, the diaphragm unit further comprising: an end member; an air seal; a rod side member; an annular bump rubber; and a tubular diaphragm, as defined herein.

A damper unit for an elevator for reducing vertical vibrations of an elevator car of the elevator during a standstill includes a stamp-like acting element that acts on an end-face guide surface of a guide rail. The acting element is spaced from the guide rail in an idle position and can be connected slip-free to the guide rail by an eccentric drive in an active position. Force transmitting elements containing a shock damper for damping the motions of the elevator car during a standstill of the car adjoin the acting element.

A method and apparatus for a vehicle suspension system gas spring. In one embodiment, a vehicle suspension system gas spring includes a compressible main gas chamber and an additional volume combinable with the main chamber to change a gas spring rate of the system. In one embodiment, a low friction piston seal is created by a flexible seal member.

A front fork includes a tubular cylinder; a free piston slidably inserted into the cylinder to partition the cylinder into a pressure chamber and a reservoir; a piston slidably inserted into the cylinder to partition the pressure chamber into an extension-side chamber and a contraction-side chamber; a piston rod having one end connected to the piston and the other end side extending oppositely to the free piston side and protruding outward of the cylinder; a passage configured to allow the pressure chamber and the reservoir to communicate with each other; and a check valve provided in the passage and configured to allow only a flow of the hydraulic fluid from the reservoir to the pressure chamber.