Abstract: A hydraulic damper (1) includes a tube (3) filled with working liquid, wherein at least one end of the tube (3) is provided with a narrower section (31) of a smaller diameter provided with at least one axial groove (12). The damper (1) includes at least one additional piston assembly (13) having diameter (D3) smaller than diameter (D1) of the main section of the tube (3), displaceable along with the main piston assembly (4) and apt to be introduced in the narrower section of the tube (3) to generate additional damping force. The narrower section (31) extends through a conical section (32) into the main section (33) of the tube (3) and the conical section (32) of the tube (3) is internally shaped to form axial bridges (15) defining said axial grooves (12) extending along the length of said conical section (32), each comprising a cylindrical section (151).

Abstract: A hydraulic damper (2) includes at least one spring valve assembly (28b, 28c) having a body (231, 261) provided with through flow channels (282), at least one deflectable disc (281) covering these through flow channels (282), and a supporting member (285, 285c) fixed to an axial member for clamping the at least one disc (281) at the inner circumferential part thereof. A spring seat (283b, 283c) is disposed around the supporting member (285, 285c) and abuts the at least one deflectable disc (281) in at least one radial position (2831, 2832) at the outer circumferential part thereof. A spring (284) is preloaded between the spring seat (283b, 283c) and the supporting member (285, 2851c). The spring seat (283b, 283c) includes at least one axial projection (2833b, 2833c) perimetrically engaging the at least one disc (281), and a circular gap (286) is provided between the spring seat (283b, 283c) and the supporting member (285, 2851c).

Abstract: A hydraulic damper (1) includes a tube (3) filled with working liquid, wherein at least one end of the tube (3) is provided with a narrower section (31) of a smaller diameter provided with at least one axial groove (12). The damper (1) includes at least one additional piston assembly (13) having diameter (D3) smaller than diameter (D1) of the main section of the tube (3), displaceable along with the main piston assembly (4) and apt to be introduced in the narrower section of the tube (3) to generate additional damping force. The narrower section (31) extends through a conical section (32) into the main section (33) of the tube (3) and the conical section (32) of the tube (3) is internally shaped to form axial bridges (15) defining said axial grooves (12) extending along the length of said conical section (32), each comprising a cylindrical section (151).

Abstract: A hydraulic damper (2) includes at least one spring valve assembly (28b, 28c) having a body (231, 261) provided with through flow channels (282), at least one deflectable disc (281) covering these through flow channels (282), and a supporting member (285, 285c) fixed to an axial member for clamping the at least one disc (281) at the inner circumferential part thereof. A spring seat (283b, 283c) is disposed around the supporting member (285, 285c) and abuts the at least one deflectable disc (281) in at least one radial position (2831, 2832) at the outer circumferential part thereof. A spring (284) is preloaded between the spring seat (283b, 283c) and the supporting member (285, 2851c). The spring seat (283b, 283c) includes at least one axial projection (2833b, 2833c) perimetrically engaging the at least one disc (281), and a circular gap (286) is provided between the spring seat (283b, 283c) and the supporting member (285, 2851c).

Abstract: A hydraulic damper (2) includes a first piston body member (233), a second piston body member (234), a third piston body member (235), and a compression stroke disc assembly (231) compressed at a radially inner side thereof between the first (233) and said second (234) piston body members. The hydraulic damper includes a rebound stroke disc assembly (232) compressed at the radially inner side thereof between the second (234) and third (235) piston body members, and the compression stroke disc assembly (231) additionally includes an annular supporting member (2319) positioning discs (2311-2318) of the compression stroke disc assembly (231) at radially inner side thereof, while a radially inner axial passage (23191) is defined at the radially inner side of the supporting member (2319).

Abstract: The invention relates to a hydraulic damper, in particular for the suspension system of a motor vehicle, comprising a tube filled with working fluid; a piston assembly slidably positioned inside the tube; a fluid compensation chamber located outside of the tube, and a base valve assembly at the end of the tube for controlling the flow of working fluid between the tube and the compensation chamber. A compression valve module added between the piston assembly and the base valve assembly allows the damping to increase during extremely fast compression strokes without modification of the other damper components, affecting neither tuning options nor performance in a normal operating range of piston velocities.

Abstract: The invention relates to a hydraulic damper, in particular for the suspension system of a motor vehicle, comprising a tube filled with working fluid; a piston assembly slidably positioned inside the tube; a fluid compensation chamber located outside of the tube, and a base valve assembly at the end of the tube for controlling the flow of working fluid between the tube and the compensation chamber. A compression valve module added between the piston assembly and the base valve assembly allows the damping to increase during extremely fast compression strokes without modification of the other damper components, affecting neither tuning options nor performance in a normal operating range of piston velocities.