A trim lock and a centering assembly that provides a centering force between a first portion of a system and a second portion of the system. The centering assembly includes a centering stabilizer that provides a centering force along an axial direction thereof, a trim lock configured and arranged to change a location of one axial end of the centering stabilizer, with respect to the second portion of the system, between an original location and an adjusted location, and to lock the axial end of the centering stabilizer at the adjusted location, a connecting unit for operatively connecting the trim lock with the centering stabilizer, and a mounting member for movably mounting the centering stabilizer with respect to the second portion of the system, wherein the mounting member permits axial movement of the centering stabilizer with respect to said second portion of the system.

A shock isolator assembly comprises a base a platform and a plurality of self-resetting buckling isolators providing a three-stage response to a dynamic load acting between the base and the platform. The three-stage response of the self-resetting buckling isolators comprises a tension stage when the dynamic load exceeds a threshold tension load, a compression stage when the dynamic load exceeds a threshold compression load, and a rigid stage when the dynamic load is below the threshold tension load and the threshold compression load.

An aircraft assembly may comprise an interior aircraft monument, an aircraft structure, and a load absorbing tie rod coupled to the interior aircraft monument and the aircraft structure. The load absorbing tie rod may include an outer cylinder coupled to the aircraft structure, a piston located at least partially within the outer cylinder and coupled to the interior aircraft monument, and a compressed gas located in a volume defined by the piston and the outer cylinder.

A shock absorber includes an outer tube, an inner tube fitted to the outer tube so as to be able to move forward and backward, a cylinder provided inside the outer tube and extending inside the inner tube, a rod extending from an end portion of the inner tube exposed from the outer tube to an inside of the cylinder, and a piston which is provided on the rod and divides the inside of the cylinder to form a gas chamber. On an outer peripheral surface of the piston, a first lubricating member, a first seal member, and a second seal member are provided in this order from a side closest to the gas chamber to a side away from the gas chamber. The members are in sliding contact with an inner peripheral surface of the cylinder.

A gas cushion device includes a cylinder, a piston slidably fitted in the cylinder, a gas enclosed in the cylinder to energize the piston, and an oil feeding mechanism configured to feed a lubricating oil to a fitting portion between the cylinder and the piston. The cylinder and the piston are fitted in an interference fit state. The piston is reduced in diameter from an inside of the cylinder toward the outside of the cylinder.

According to an aspect of the present disclosure, a multi-step height adjuster includes a base tube portion including a first base tube and a second base tube vertically reciprocating inside the first base tube; a spindle portion including a first spindle installed inside the first base tube to vertically reciprocate and a second spindle installed inside the second base tube to vertically reciprocate; and an adjustment portion installed in the spindle portion to transmit power to the spindle portion, wherein the first spindle and the second base tube are integrally moved.

A gas spring having concentric outer and inner tubes that define a first chamber between the tubes is provided with a floating piston sealingly and slidingly radially disposed against an inner surface of the inner tube and axially disposed between a valve piston and a rear cap.

An industrial gas spring with a pressure chamber in a casing with an end wall, a piston rod received at least in part in the casing for reciprocation between extended and retracted positions and a pressure relief assembly carried by the end wall. The pressure relief assembly may have a membrane communicating with the pressure chamber and a plunger configured to breach the membrane when engaged and moved by the piston rod when it overtravels its design intended retracted position.

Example bicycle suspension components and analysis devices are described herein. An example suspension component includes a first tube and a second tube configured in a telescopic arrangement having an interior space, a spring system including a pneumatic chamber containing a mass of a gas forming a pneumatic spring configured to resist compression of the telescopic arrangement, and a suspension component analysis (SCA) device. The SCA device may include a pressure sensor to detect a pressure of the gas in the pneumatic chamber and provide a signal indicative of the detected pressure and circuitry configured to receive the signal. The circuitry and the pressure sensor are at least partially disposed in the interior space.

An industrial gas spring with a pressure chamber in a casing with an end wall, a piston rod received at least in part in the casing for reciprocation between extended and retracted positions and a pressure relief assembly carried by the end wall. The pressure relief assembly may have a membrane communicating with the pressure chamber and a plunger configured to breach the membrane when engaged and moved by the piston rod when it overtravels its design intended retracted position.