An embodiment of the present invention provides a plane scroll spring. A torque provided by a working section of a reed of the plane scroll spring is gradually reduced from an outer ring toward an inner ring of the plane scroll spring. The working section includes a first length section and a second length section connected to an inner end of the first length section. In the first length section, the torque decreases by a first decrement value per unit length from the outer ring toward the inner ring. In the second length section, the torque decreases by a second decrement value per unit length from the outer ring toward the inner ring. The first decrement value is less than the second decrement value.

An elastomeric compression spring for isolating vibrations between a first part and a second part. The first part is movable in a direction relative to the second part. The elastomeric compression spring comprises a tube elongated along a central axis of the tube. The central axis of the tube is perpendicular to the direction. The tube is configured to compress in the direction. The tube comprises an outer surface comprising an initial contact line configured to initially receive contact from the first part. The tube further comprises at least one load tuning feature in the outer surface, parallel to the central axis, and circumferentially spaced apart from the initial contact line. The at least one load tuning feature creates a localized change in a thickness of the tube and a stiffness of the elastomeric compression spring at the at least one load tuning feature.

Generally described, dampers having shimmed pistons are configured for use with vehicle suspensions. The dampers generally include a shaft having a piston with compression and rebound valves extending therethrough. The piston interfaces a shim assembly at the valve outlets such that damping fluid flow is controlled through a set of valves in one direction, and the damping fluid flow is limited through the same set of valves in the opposite direction. In this regard, the shim assembly is configured to provide bleed relief of the hydraulic damping fluid at lower shaft speeds and deflect away from the piston higher shaft speeds. The shim assembly generally includes a ring shim that interfaces a shim stack to provide a configurable preload for the deflectable shims and a flow path for the hydraulic damping fluid during bleed relief.

Generally described, aspects of the disclosed subject matter are directed to dampers having shimmed pistons. In accordance with aspects of the present disclosure, the dampers generally include a shaft having a piston with compression and rebound valves extending therethrough. The piston interfaces a shim assembly at the valve outlets such that damping fluid flow is controlled through a set of valves in one direction, and the damping fluid flow is limited through the same set of valves in the opposite direction. In this regard, the shim assembly is configured to deflect away from the piston as a result of damping fluid flow through the first valve. The shim assembly generally includes a ring shim that interfaces a shim stack to provide a configurable preload for the deflectable shims.

Generally described, aspects of the disclosed subject matter are directed to dampers having shimmed pistons. In accordance with aspects of the present disclosure, the dampers generally include a shaft having a piston with compression and rebound valves extending therethrough. The piston interfaces a shim assembly at the valve outlets such that damping fluid flow is controlled through a set of valves in one direction, and the damping fluid flow is limited through the same set of valves in the opposite direction. In this regard, the shim assembly is configured to deflect away from the piston as a result of damping fluid flow through the first valve. The shim assembly generally includes a ring shim that interfaces a shim stack to provide a configurable preload for the deflectable shims.

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.

An absorber device for absorbing a force acting thereon includes an absorber housing which encloses an interior space and a hydraulic medium arranged in the interior space. An absorber piston rod has an absorber piston arranged thereon. The absorber piston divides the interior space into a first chamber and a second chamber. The absorber piston rod has a spring device for resiliently supporting the absorber piston relative to a quasi-static component. The absorber piston is mounted axially movably on the absorber piston rod. A first spring and a second spring of the spring device are arranged in each case on both sides of the absorber piston and resiliently connect the absorber piston rod to the absorber piston and counteract a movement of the absorber piston in the axial direction, relative to the absorber piston rod. The absorber device can be arranged in a hollow damper piston rod of a damper.

A torsional vibration control coupling having a rotation axis includes a first coupling part as the input side of the coupling, a second coupling part as the output side of the coupling and a damping unit. The damping unit has at least one spring arrangement that is designed as a nonlinear spring arrangement having a degressive load deflection curve.