Abstract: Disclosed is a hydraulic damper wherein the main damper tube has a narrowed section and it includes at least one additional piston assembly adapted to be received in the narrowed section to generate additional damping force. The piston assembly comprises a compression valve assembly and a rebound valve assembly each comprising at least one deflective disc. A sealing ring assembly is disposed between the compression and rebound valve assembles and comprises a first annular member having a plurality of channels covered by the deflective disc of the compression valve assembly; a second annular member having a plurality of channels, covered by the deflective disc of the rebound valve assembly; an axial projection between the annular members radially internal to the axial channels; and a sealing ring displaceable axially between the annular members and radially over the axial projection and adapted to cooperate with the narrowed section of the tube.

Abstract: A hydraulic damper including a tube. A piston assembly is disposed slidably inside the tube and divides the tube into a rebound chamber and a compression chamber. A fluid compensation chamber is located outside of the tube. A base valve assembly controls the flow of the fluid between the compression and compensation chambers. A hydro-mechanical compression stop assembly includes a covering member that overlies the base valve assembly and defines a main flow channel and an auxiliary flow channel that each fluidly connect the compression chamber and the base valve assembly. A closing member selectively closes the main flow channel. A first telescoping sleeve is coupled with the piston assembly and a second telescoping sleeve has a base connected to the closing member. A first spring is compressed between the piston assembly and the base to bias the closing member in an extended position.

Abstract: A hydraulic damper for a motor vehicle including a tube having a main section and a narrowed section. A main piston assembly is disposed inside the main section. A main piston rod is attached to the main piston assembly. A secondary rod is coupled with the main piston rod. A spring seat is disposed about the secondary rod. A spring engages the spring seat and preloads the spring seat. A secondary piston is disposed about and coupled with the secondary rod. The secondary piston has an axial projection and an annular projection that abuts the spring seat. The annular projection defines a plurality of axial slots. A retaining member is fixed to the secondary rod and has an outer face defining a plurality of radial slots. A sealing ring is slidably disposed about the axial projection. An annular channel is defined radially between the sealing ring and the axial projection.

Abstract: Disclosed is a hydraulic damper wherein the main damper tube has a narrowed section and it includes at least one additional piston assembly adapted to be received in the narrowed section to generate additional damping force. The piston assembly comprises a compression valve assembly and a rebound valve assembly each comprising at least one deflective disc. A sealing ring assembly is disposed between the compression and rebound valve assembles and comprises a first annular member having a plurality of channels covered by the deflective disc of the compression valve assembly; a second annular member having a plurality of channels, covered by the deflective disc of the rebound valve assembly; an axial projection between the annular members radially internal to the axial channels; and a sealing ring displaceable axially between the annular members and radially over the axial projection and adapted to cooperate with the narrowed section of the tube.

Abstract: A damper assembly (20) is disclosed, and it comprises: a first rube (22) defining an inner surface (24) extending along an axis (A) to define a fluid chamber (30) containing a damping fluid (32); a rod (34) extending axially in the first rube (22); a guide (40) annularly disposed about the rod (34) and engaging the first tube (22); a piston (42) and a retainer (46) which are attached to the rod (34) and are slidably disposed in the first tube (22); a first spring (50) engaging and extending axially away from the retainer (46); a valve body (52) which is disposed adjacent to the first spring (50) and has a periphery (54) spaced from the inner surface (24) of the first tube (22) to define an annular channel (60); a second spring (66) extending axially away from the valve body (52); a bumper (68) engaging the second spring (66). The valve body (52) moves into sealing engagement with the retainer (46) in response to the bumper (68) engaging the guide (40).

Abstract: A hydraulic damper including a tube. A piston assembly is disposed slidably inside the tube and divides the tube into a rebound chamber and a compression chamber. A fluid compensation chamber is located outside of the tube. A base valve assembly controls the flow of the fluid between the compression and compensation chambers. A hydro-mechanical compression stop assembly includes a covering member that overlies the base valve assembly and defines a main flow channel and an auxiliary flow channel that each fluidly connect the compression chamber and the base valve assembly. A closing member selectively closes the main flow channel. A first telescoping sleeve is coupled with the piston assembly and a second telescoping sleeve has a base connected to the closing member. A first spring is compressed between the piston assembly and the base to bias the closing member in an extended position.

Abstract: A hydraulic damper for a motor vehicle including a tube having a main section and a narrowed section. A main piston assembly is disposed inside the main section. A main piston rod is attached to the main piston assembly. A secondary rod is coupled with the main piston rod. A spring seat is disposed about the secondary rod. A spring engages the spring seat and preloads the spring seat. A secondary piston is disposed about and coupled with the secondary rod. The secondary piston has an axial projection and an annular projection that abuts the spring seat. The annular projection defines a plurality of axial slots. A retaining member is fixed to the secondary rod and has an outer face defining a plurality of radial slots. A sealing ring is slidably disposed about the axial projection. An annular channel is defined radially between the sealing ring and the axial projection.

Abstract: A damper assembly (20) is disclosed, and it comprises: a first rube (22) defining an inner surface (24) extending along an axis (A) to define a fluid chamber (30) containing a damping fluid (32); a rod (34) extending axially in the first rube (22); a guide (40) annularly disposed about the rod (34) and engaging the first tube (22); a piston (42) and a retainer (46) which are attached to the rod (34) and are slidably disposed in the first tube (22); a first spring (50) engaging and extending axially away from the retainer (46); a valve body (52) which is disposed adjacent to the first spring (50) and has a periphery (54) spaced from the inner surface (24) of the first tube (22) to define an annular channel (60); a second spring (66) extending axially away from the valve body (52); a bumper (68) engaging the second spring (66). The valve body (52) moves into sealing engagement with the retainer (46) in response to the bumper (68) engaging the guide (40).

Abstract: Provided is a hydraulic damper with a position dependent valve assembly (3) to prevent abrupt stop of a piston at the end of the compression stroke. The position dependent valve assembly (3) comprises a supporting member (31) partitioning damper (2) internal tube (22) and provided with an axial opening (312), an axial member (32) disposed slidably within said axial opening (312) of said supporting member (31), a rigid body (33) fixed on said axial member (32), a compression stroke disc assembly (35) and a rebound stroke disc assembly (34) fixed on said axial member (32).

Abstract: A hydraulic damper (1) includes an orifice plate (33) provided with an axial projection (334) and a number of rebound flow passages (332) disposed around the projection (334). A deflectable disc (91) and an elliptical disc (92) is disposed slidably one on top of the other over the axial projection (334) to cover a compression side of the rebound flow passages (332). A cage member (34) is fixed to a piston assembly at the compression side thereof and is provided with at least one passage (341, 343). A compression spring (95) is preloaded between the cage member (34) and the discs (91, 92) to normally close the compression side of the rebound flow passages (332).

Abstract: A hydraulic damper includes at least one valve assembly (9, 19) provided with rebound (11, 21) and compression (12, 22) valves and at least one resilient deflective disk covering flow channels (13, 23) of the valve assembly and preloaded by a spring (16, 26). The hydraulic damper includes means for clamping together the components of the at least one valve assembly and for preloading the spring. In order to increase the repeatability coefficient among dampers of the same production batch and render it independent on the geometrical tolerances of the valve assembly components, the means have a form of an adjustable nut assembly (17a, 27a) comprising a clamp nut (171, 271) and a shoulder sleeve (172, 272) fixed on the perimeter of the clamp nut. The clamp nut clamps together the components of the valve assembly and the shoulder sleeve preloads the spring with a predetermined force. method of assembling such a damper.

Abstract: A hydraulic damper (1) includes an orifice plate (33) provided with through rebound flow means and rebound valve means which cover a compression side of the through rebound flow means. A cage member (34) is fixed to a piston assembly at the compression side thereof and is provided with at least one passage (341, 343). A compression spring (95) is preloaded between the cage member (34) and the rebound valve means to normally close the compression side of the through rebound flow means. The orifice plate (33) includes an axial projection (334) and the through rebound flow means include a number of rebound flow passages (332) disposed around the projection (334). The rebound valve means comprise a deflectable disc (91) and an elliptical disc (92) disposed slidably one on top of the other over the axial projection (334).

Abstract: Provided is a hydraulic damper with a position dependent valve assembly (3) to prevent abrupt stop of a piston at the end of the compression stroke. The position dependent valve assembly (3) comprises a supporting member (31) partitioning damper (2) internal tube (22) and provided with an axial opening (312), an axial member (32) disposed slidably within said axial opening (312) of said supporting member (31), a rigid body (33) fixed on said axial member (32), a compression stroke disc assembly (35) and a rebound stroke disc assembly (34) fixed on said axial member (32).

Abstract: A hydraulic damper includes at least one valve assembly (9, 19) provided with rebound (11, 21) and compression (12, 22) valves and at least one resilient deflective disk covering flow channels (13, 23) of the valve assembly and preloaded by a spring (16, 26). The hydraulic damper includes means for clamping together the components of the at least one valve assembly and for preloading the spring. In order to increase the repeatability coefficient among dampers of the same production batch and render it independent on the geometrical tolerances of the valve assembly components, the means have a form of an adjustable nut assembly (17a, 27a) comprising a clamp nut (171, 271) and a shoulder sleeve (172, 272) fixed on the perimeter of the clamp nut. The clamp nut clamps together the components of the valve assembly and the shoulder sleeve preloads the spring with a predetermined force. method of assembling such a damper.