Method for vibration damping of and vibration damper assembly for semi-submerged or submerged structure, based on separating hydrodynamic added mass from the semi-submerged or submerged structure by means of a vibration damper assembly exhibiting spring and/or damper properties and use the hydrodynamic added mass as a reaction mass in the vibration damper assembly.

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 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 spring mount assembly for a vibrating screen, the spring mount assembly having a helical spring; a top helical spring support disposed on the top end of the helical spring for supporting the top end of the helical spring; a bottom helical spring support disposed on the bottom end of the helical spring for supporting the bottom end of the helical spring; a stationary base support; a removable base support disposed on top of the stationary base support between the stationary base support and the bottom helical spring support; a hydraulic cylinder; side supports attached to the stationary base support; and removable posts affixed to the side supports and the top helical spring support. Also provided is a system, and a method, for removing the helical spring, the system having a hydraulic jacking arrangement for creating a gap between the bottom helical spring support and the removable base support.

An arrangement for mounting a suspension spring of a spring strut for a motor vehicle may include a spring plate that is arranged on a damper tube of a vibration damper of the spring strut such that an end side of the suspension spring is supported on the spring plate. A protective element for protecting a piston rod of the vibration damper may also be attached to the spring plate. The spring plate may include features that help minimize or even eliminate contact between the protective element and the damper tube. For example, the spring plate may include tongues that extend from a ring-shaped main structure of the spring plate, wherein inner sides of the tongues may lie against the damper tube and outer sides of the tongues may guide the protective element.

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.

A front fork includes a fork main body, a damper cartridge, and a closing member. The damper cartridge includes a cylinder, a piston mounted on a piston rod, and a rod guide which guides the piston rod and to which a fluid filling port that allows the outside of the cylinder to communicate with the fluid chamber is provided. The closing member is provided on the rod guide and closes the fluid filling port.

A damper is provided for responding to relative movement of arms to which the damper is coupled. The damper includes a member, springs, a first housing and a second housing. The first housing includes a first body and first bellows affixed to the member and the first body by first joints to define a first interior. The second housing includes a second body and second bellows affixed to the member and the second body by second joints to define a second interior. The first and second interiors are configured to contain fluid charged therein and the member is configured to permit bi-directional flows of the fluid between the first and second interiors responsive to the relative movement of the arms and in opposition to an elasticity of the springs.

Damping coefficient-regulating inductive heating systems are provided, as are isolator assemblies containing such inductive heating systems. In embodiments, the isolator assembly includes a damper coefficient-regulating inductive heating system and at least one isolator, which contains a hydraulic damper fillable with a damping fluid. The damper coefficient-regulating inductive heating system includes, in turn, an inductive heating device, a controller, and a sensor for monitoring data indicative of damping fluid temperature. The inductive heating device is positioned around a periphery of the hydraulic damper, such as the outer periphery of the damper, in a non-contacting relationship. During isolator operation, the controller receives data from the sensor and, in response thereto, controls the inductive heating device to selectively generate a varying magnetic field to induce heating of one or more damper components, such as metal bellows, in contact with the damping fluid.

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.