Abstract: The present invention relates to a hydraulic damper comprising a main tube; a main piston assembly; a base valve assembly; and a hydraulic compression stop assembly comprising an insert fixed on the base valve assembly, and an additional piston assembly apt to be introduced inside the first inner chamber of the insert at the end of the damper compression stroke to generate additional damping force. Said additional piston assembly comprises a piston rod extender fixed to the piston assembly or the piston rod at the side of the compression chamber, and a tenon fixed to said piston rod extender and radially displaceable with regard thereto, wherein said tenon is terminated with a first entry surface having diameter monotonically diminishing towards the compression end of said tenon, while the insert is provided with a second entry surface having diameter monotonically increasing towards the rebound end of the insert.

Abstract: A hydraulic compression stop (HCS) assembly includes an HCS base defining an HCS window providing fluid communication between a compression chamber of a damper and an exterior space; a spring guide movable relative to the HCS base by action of a piston; and a closure member attached to the spring guide and configured to selectively and progressively cover a portion of the HCS window to restrict fluid flow therethrough, with the portion of the HCS window covered varying with a position of the spring guide relative to the HCS base. A damper assembly includes a tube defining an interior chamber; a piston slidably disposed in the tube and dividing the interior chamber into a rebound chamber and a compression chamber; and the HCS assembly disposed at least partially within the compression chamber to restrict fluid flow therethrough, the restriction varying in response to the piston moving toward the HCS base.

Abstract: The present disclosure relates to a hydraulic damper comprising a main tube, a piston assembly, a base valve assembly, and at least one hydraulic compression stop assembly cooperating with a compression valve assembly, and comprising a pin disposed slidably within the piston rod and biased to project an activating tip towards the compression chamber. Said compression valve assembly comprises at least one deflectable or floating disc covering compression flow passages, and biased by a piston member slidable along said axis and normally abutting a retaining surface, and a pressure chamber having one surface defined by a surface of said piston member abutting said retaining surface, wherein said pin upon sliding inside the piston rod facilitates a flow of the working liquid from the compression chamber into said pressure chamber to increase biasing load on said at least one deflectable or floating disc.

Abstract: A hydraulic damper comprises a main tube, a piston assembly, a base valve assembly, and a compression stop assembly. The compression stop assembly includes an insert defining an inner chamber, and a sleeve displaceable along with the main piston assembly and configured to be slidably introduced inside the inner chamber. The sleeve has a diameter lower than the diameter of the main tube defining a first external flow channel between the sleeve and the main tube; the sleeve is attached to the piston assembly by a spring disposed within the sleeve; and the insert is provided with a plurality of axially-spaced holes and has an annular flange adjoining the inner wall of the main tube and separating the compression chamber from a second external flow channel between the radially external outlets of the holes and the base valve assembly.

Abstract: The present invention relates to a hydraulic damper comprising a main tube; a main piston assembly; a base valve assembly; and a hydraulic compression stop assembly comprising an insert fixed on the base valve assembly, and an additional piston assembly apt to be introduced inside the first inner chamber of the insert at the end of the damper compression stroke to generate additional damping force. Said additional piston assembly comprises a piston rod extender fixed to the piston assembly or the piston rod at the side of the compression chamber, and a tenon fixed to said piston rod extender and radially displaceable with regard thereto, wherein said tenon is terminated with a first entry surface having diameter monotonically diminishing towards the compression end of said tenon, while the insert is provided with a second entry surface having diameter monotonically increasing towards the rebound end of the insert.

Abstract: A hydraulic damper assembly comprises a main tube extending between a first and a second end and defining a fluid chamber extending therebetween. A main piston slidably disposed in the fluid chamber divides the fluid chamber into a compression chamber and a rebound chamber. A piston rod attaches to the main piston. An additional piston couples to the piston rod axially spaced from the main piston. The additional piston has a top surface and a bottom surface and defines at least one pathway extending through the additional piston. The additional piston defines a recess bounded by an upper surface and a lower surface. A ring slidably is disposed in the recess. The additional piston includes an anti-noise member located in the recess whereby the anti-noise member releases fluid pressure between the ring and the upper surface reducing noise generation during a compression stroke and a rebound stroke.

Abstract: A hydraulic damper assembly comprises a main tube extending between a first and a second end and defining a fluid chamber extending therebetween. A main piston slidably disposed in the fluid chamber divides the fluid chamber into a compression chamber and a rebound chamber. A piston rod attaches to the main piston. An additional piston couples to the piston rod axially spaced from the main piston. The additional piston has a top surface and a bottom surface and defines at least one pathway extending through the additional piston. The additional piston defines a recess bounded by an upper surface and a lower surface. A ring slidably is disposed in the recess. The additional piston includes an anti-noise member located in the recess whereby the anti-noise member releases fluid pressure between the ring and the upper surface reducing noise generation during a compression stroke and a rebound stroke.

Abstract: A damper housing disposed on a center axis includes an extended mains section and a narrowed end section. The narrowed end section has a second predetermined wall thickness less than the first predetermined wall thickness of the extended main section. An intermediate conical section, connecting the narrowed end section and the extended main section, has an intermediate conical section wall thickness equal to the second predetermined wall thickness at an internal inclination angle relative to the center axis. A method for manufacturing the damper housing using a preformed tube, a first broaching die, a calibrating mandrel, and a swaging die is performed by compressing the preformed tube between the first broaching die and the narrowed head of the calibrating mandrel and compressing the preformed tube between the swaging die and the intermediary section of the calibrating mandrel to form the narrowed end section and the intermediate conical section, respectively.

Abstract: A shock absorber having a main tube extends between a first end and a second end defining a fluid chamber therebetween. A main piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression chamber and a rebound chamber. A piston rod is attached to the main piston. A hydraulic compression stop including an additional piston is attached to the piston rod for movement therewith. The additional piston includes a body extending from the piston rod and defining a conduit extending along the center axis. An actuator is disposed in the conduit and attached to the body movable from a closed position to an open position during the compression stroke with the open position allowing fluid flow through the actuator and the conduit and the closed position preventing fluid flow through the actuator. The actuator includes a spring and a blocking member disposed in the conduit.

Abstract: A damper assembly includes a main tube disposed on a center axis and defines a fluid chamber for containing a working fluid. A main piston is disposed in the fluid chamber dividing the fluid chamber into a rebound and a compression chamber. A piston rod is attached to the main piston for moving the main piston between a compression stroke and a rebound stroke. An additional piston is attached to the piston rod adjacent to the main piston. The additional piston includes a body having an upper and a lower member defining a groove. A sealing ring is disposed in the groove and being radially expandable in response to a working fluid pressure. The sealing ring includes at least one annular collar extending outwardly from the sealing ring for forming a locking engagement with the upper and lower members to limit the radial expansion of the sealing ring.

Abstract: A damper assembly includes a main tube disposed on a center axis and defines a fluid chamber for containing a working fluid. A main piston is disposed in the fluid chamber dividing the fluid chamber into a rebound and a compression chamber. A piston rod is attached to the main piston for moving the main piston between a compression stroke and a rebound stroke. An additional piston is attached to the piston rod adjacent to the main piston. The additional piston includes a body having an upper and a lower member defining a groove. A sealing ring is disposed in the groove and being radially expandable in response to a working fluid pressure. The sealing ring includes at least one annular collar extending outwardly from the sealing ring for forming a locking engagement with the upper and lower members to limit the radial expansion of the sealing ring.

Abstract: A shock absorber having a main tube extends between a first end and a second end defining a fluid chamber therebetween. A main piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression chamber and a rebound chamber. A piston rod is attached to the main piston. A hydraulic compression stop including an additional piston is attached to the piston rod for movement therewith. The additional piston includes a body extending from the piston rod and defining a conduit extending along the center axis. An actuator is disposed in the conduit and attached to the body movable from a closed position to an open position during the compression stroke with the open position allowing fluid flow through the actuator and the conduit and the closed position preventing fluid flow through the actuator. The actuator includes a spring and a blocking member disposed in the conduit.

Abstract: A damper housing disposed on a center axis includes an extended mains section and a narrowed end section. The narrowed end section has a second predetermined wall thickness less than the first predetermined wall thickness of the extended main section. An intermediate conical section, connecting the narrowed end section and the extended main section, has an intermediate conical section wall thickness equal to the second predetermined wall thickness at an internal inclination angle relative to the center axis. A method for manufacturing the damper housing using a preformed tube, a first broaching die, a calibrating mandrel, and a swaging die is performed by compressing the preformed tube between the first broaching die and the narrowed head of the calibrating mandrel and compressing the preformed tube between the swaging die and the intermediary section of the calibrating mandrel to form the narrowed end section and the intermediate conical section, respectively.