A trigger activated arm may use a piston moving within a cylinder to dampen gun bolt speed. In some embodiments, gun bolt motion increases pressure within the cylinder bore to dampen rearward gun bolt speed. The pressure may be high enough to unseat the cylinder creating a vent that cylinder fluid exits. In other embodiments, gun bolt motion decreases pressure within the cylinder bore to dampen forward gun bolt speed.

A hydraulic suspension damper includes a tube having an opened end and a closed end defining a compartment. A main piston is disposed in the compartment dividing the compartment into a compression chamber and a rebound chamber. A piston rod is attached to the main piston. A rod guide is disposed at said opened end. A stroke stop arrangement includes an insert and an additional piston attached to the piston rod. The insert has a narrowed section including an inner surface defining at least one recess between the distal end and the rod guide and extends axially along the insert in fluid communication with the compression chamber for allowing working liquid flow from the rebound chamber to the compression chamber during the rebound stroke. The at least one recess includes three recesses disposed equidistantly and spaced from one another.

A hydraulic energy absorption device including a cylindrical housing having an interior hollow compartment, the interior hollow compartment having a distal end and a proximal end, a resilient member arranged within the distal end of the cylindrical housing, a piston arranged adjacent to the resilient member within the cylindrical housing, the piston including a piston head and a piston rod extending from the piston head toward the proximal end and a compressible accumulator arranged within the cylindrical housing and connected to the piston. When the piston rod is displaced toward the distal end of the cylindrical housing in operation, the piston head and the compressible accumulator are displaced toward the distal end of the cylindrical housing.

A system for securing a powertrain component to a body structure of a vehicle may include first and second mounts each having a base and a first elastomeric barrier secured to and extending from the base defining an air filled chamber, and a connector coupling the air filled chambers, the connector sized to provide an associated air volume that reduces stiffness of the first elastomeric barrier at an excitation frequency corresponding to a target engine speed. The air filled chambers may be hermetically sealed and pressurized above atmospheric pressure. The system may include a fluid-filled switchable mount having a decoupler air pocket selectively coupled to a vacuum source or atmosphere with an expander integrated with the mount or as a separate component coupled between the decoupler air pocket and the vacuum source. The expander may be implemented as a Helmholtz resonator or may include an in-line expansion chamber.

Dampers and a fuel delivery systems including such dampers are disclosed. The damper includes a first component and a dampening component. The first component is coupled to a first tubular element and includes a first extended hollow section. The dampening component is coupled to a second tubular element. The dampening component includes a first end portion including a plurality of slits. The first end portion is disposed within the first extended hollow section to frictionally couple the first end portion to the first extended hollow section.

A base isolation unit includes a vibration-source connector to be connected with a structure subjected to seismic vibration, an isolated-object connector to be connected with an object to be isolated from vibration, and located at a predetermined distance from the vibration-source connector in a predetermined base isolation direction, and a movement regulator. The movement regulator is located between the vibration-source connector and the isolated-object connector and includes an elastic body applied with a preload and subjected to a pressure caused by an external force in the base isolation direction. The movement regulator keeps the distance unchanged when the external force is equal to or less the preload, and changes the distance by making the vibration-source connector movable when the external force exceeds the preload. The base isolation unit is usable repeatedly and in environments without electricity, and achieving isolation from seismic vibration while keeping stiffness in conditions other than earthquakes.

A base isolation unit includes a vibration-source connector to be connected with a structure subjected to seismic vibration, an isolated-object connector to be connected with an object to be isolated from vibration, and located at a predetermined distance from the vibration-source connector in a predetermined base isolation direction, and a movement regulator. The movement regulator is located between the vibration-source connector and the isolated-object connector and includes an elastic body applied with a preload and subjected to a pressure caused by an external force in the base isolation direction. The movement regulator keeps the distance unchanged when the external force is equal to or less the preload, and changes the distance by making the vibration-source connector movable when the external force exceeds the preload. The base isolation unit is usable repeatedly and in environments without electricity, and achieving isolation from seismic vibration while keeping stiffness in conditions other than earthquakes.

A coil air spring combination (13) in this case includes a coil (11) and airbag (12) and an airbag protective sleeve (13) fitted over the airbag. The sleeve may be made from an inextensible fabric with tapered elastic ends so that the sleeve can fit over the airbag for installation.

A shoe includes a first plate and a second plate that are located in a portion of the shoe between an upper and an outsole of the shoe, and a nest formed as a bag filled with one or more gasses located between the first plate and the second plate. The shoe may further include one or more springs located in cavities in the gas filled nest for biasing the first plate and the second plate apart from each other. Pods may be located within the openings in the center of the springs, and the pods may be filled with one or more gasses. The pods may protrude from a bottom or a top surface of the nest. Spring sandwiches including one or more springs positioned between plates may be constructed and placed in various portions of a shoe. The shoe may also include piping with lights.

Included are: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; an elastically deformable diaphragm forming a closed space by connecting the first supporting member and the second supporting member; a detection unit detecting a change of a relative distance between the first supporting member and the second supporting member, and producing a mechanical output of the change of the relative distance; and a controlling member capable of discharging air in an inside of the closed space S to an outside of the closed space S in response to the mechanical output from the detection unit. Thereby, an air spring having a mechanism for suppressing an abnormal rise of a vehicle height without deteriorating the diaphragm can be provided.