Abstract: In shock absorber system 10, solenoid 18 varies the damping force by changing the position of spring seat 24, and the effective preload force, at the same time. In the normal, de-energized condition (with no current), damping forces are generated by the piston valve 30 including piston 20. The actuated valve spring 16 is relaxed and set in such a way that it applies only a minimum preload force to the rebound-side disc stack 28. The motion of the plunger 14, pin 32 and movable spring seat 24 assembly changes the spring force by varying the distance between the movable spring seat 24 and the stationary spring seat 22. In the energized state, applying current to coil 12 generates a pulling force on the plunger 14 in the direction of the core element 34 to attract plunger 14 towards the core 34 and across the initial gap 36 until it is in a direct contact with the core's surface 38.

Abstract: A hydraulic damper (2) includes a slidable piston assembly (4) attached to a piston rod (6) to form at least one valve assembly of the damper. The damper further includes at least one chamber in which a slidable partition assembly (54) separates this chamber into an additional compression chamber (101) hydraulically connected with a main compression chamber (10) and an additional rebound chamber (91) hydraulically connected with a main rebound chamber (9, 09). The slidable partition assembly (54) comprises a piston (541) making a sliding fit with an inner surface of the chamber and at least one spring (543) supporting the piston (541). The slidable partition assembly (54) additionally comprises at least one internal piston (542) disposed slidably within the external piston (541) and supported by an internal spring (544) disposed between the internal piston (542) and the external piston (541).

Abstract: A hydraulic damper (2) comprises a tube (3) filled with working liquid, inside of which a slidable piston assembly (4) is attached to a piston rod (6) and provided with at least one valve assembly (43) to control the flow of working liquid passing through the piston assembly (4) during rebound and compression stroke of the damper. The valve assembly (4) contains a floating disc valve (431) and additionally comprises a unidirectional check valve disc (436) disposed serially with the floating disc valve (431) across the passage of the flow of working liquid during compression or rebound stroke of the damper (2). Preferably the piston assembly (4) forms a symmetrical cross-flow arrangement and preferably the at least one valve assembly includes compression (43a) and rebound (43b) valve assemblies of the piston assembly (4) which each have the same constructions.

Abstract: A hydraulic damper (2) includes a slidable piston assembly (4) attached to a piston rod (6) to form at least one valve assembly of the damper. The damper further includes at least one chamber in which a slidable partition assembly (54) separates this chamber into an additional compression chamber (101) hydraulically connected with a main compression chamber (10) and an additional rebound chamber (91) hydraulically connected with a main rebound chamber (9, 09). The slidable partition assembly (54) comprises a piston (541) making a sliding fit with an inner surface of the chamber and at least one spring (543) supporting the piston (541). The slidable partition assembly (54) additionally comprises at least one internal piston (542) disposed slidably within the external piston (541) and supported by an internal spring (544) disposed between the internal piston (542) and the external piston (541).

Abstract: A hydraulic damper (2) comprises a tube (3) filled with working liquid, inside of which a slidable piston assembly (4) is attached to a piston rod (6) and provided with at least one valve assembly (43) to control the flow of working liquid passing through the piston assembly (4) during rebound and compression stroke of the damper. The valve assembly (4) contains a floating disc valve (431) and additionally comprises a unidirectional check valve disc (436) disposed serially with the floating disc valve (431) across the passage of the flow of working liquid during compression or rebound stroke of the damper (2). Preferably the piston assembly (4) forms a symmetrical cross-flow arrangement and preferably the at least one valve assembly includes compression (43a) and rebound (43b) valve assemblies of the piston assembly (4) which each have the same constructions.

Abstract: In shock absorber system 10, solenoid 18 varies the damping force by changing the position of spring seat 24, and the effective preload force, at the same time. In the normal, de-energized condition (with no current), damping forces are generated by the piston valve 30 including piston 20. The actuated valve spring 16 is relaxed and set in such a way that it applies only a minimum preload force to the rebound-side disc stack 28. The motion of the plunger 14, pin 32 and movable spring seat 24 assembly changes the spring force by varying the distance between the movable spring seat 24 and the stationary spring seat 22. In the energized state, applying current to coil 12 generates a pulling force on the plunger 14 in the direction of the core element 34 to attract plunger 14 towards the core 34 and across the initial gap 36 until it is in a direct contact with the core's surface 38.

Abstract: A high-performance piston core including a first piston cylinder and a second piston cylinder, with a piston center longitudinally disposed between and magnetically coupling the first piston cylinder and the second piston cylinder. The piston center is made of high-performance magnetic material, such as Cobalt steel (CoFe), Silicon steel (SiFe), Vanadium/Cobalt steel (Permendur), alloys thereof, or the like. The high-performance magnetic materials exhibit high magnetic permeability and reduce the magnetic reluctance of flux bottlenecks. In addition, high-performance magnetic materials typically saturate at a higher flux density than the conventional magnetic materials. The first piston cylinder and the second piston cylinder can be made of conventional magnetic material, such as low-carbon steel. The first piston cylinder can include a ring disposed about an end, where the end is longitudinally attached and magnetically coupled to the piston center.