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公开(公告)号：US20240166008A1
公开(公告)日：2024-05-23
申请号：US18515202
申请日：2023-11-20
IPC分类号： B60G17/015 , B60G17/056
CPC分类号： B60G17/0152 , B60G17/056 , B60G2202/12 , B60G2202/413 , B60G2500/30
摘要： A hydraulic lift actuator for adjusting the height of a vehicle includes: a top mount plate configured for attachment to a chassis element; a hydraulic cylinder having a tubular wall and an end cap, together defining an interior chamber; a piston rod extending axially into the interior chamber; a piston assembly connected to the piston rod and disposed within the interior chamber, wherein the piston assembly divides the interior chamber into an upper chamber and a lower chamber, the lower chamber extending between the piston assembly and the end cap; and a spring seat rigidly connected to the hydraulic cylinder and configured to engage an upper end of a coil spring, wherein the spring seat and the hydraulic cylinder are linearly translatable relative to the piston rod between a retracted position adjacent to the top mount plate and an extended position spaced apart from the top mount plate.
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公开(公告)号：US11919349B2
公开(公告)日：2024-03-05
申请号：US17492539
申请日：2021-10-01
发明人： Saiman Lun
CPC分类号： B60G15/06
摘要： A damper assembly for a suspension system of an associated vehicle. The damper assembly comprises a cylindrical tube extending along an axis and defining a chamber. A piston is located in the chamber and is moveable along the axis in a compression direction and a rebound direction. The piston includes a piston rod extending from a first end to a piston head. A rebound stop is located on the piston rod between the first end and the piston head. A hydraulic rebound stop (“HRS”) piston is located in a HRS chamber. A rebound spring biasing the HRS piston towards the adaptor plate in the HRS chamber. The piston rod is slideably received within the HRS piston in the rebound direction until the rebound stop contacts the rebound head and causes the rebound spring to compress.
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公开(公告)号：US20230111905A1
公开(公告)日：2023-04-13
申请号：US17942117
申请日：2022-09-10
IPC分类号： F16F13/00
摘要： 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.
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公开(公告)号：US20220213946A1
公开(公告)日：2022-07-07
申请号：US17485459
申请日：2021-09-26
摘要： The disclosure relates to a hydraulic damper provided with an additional stroke stop arrangement comprising a narrowed section and an additional piston assembly, wherein the additional piston assembly comprises a plastic ring guide, a ring, and a retaining member, wherein the ring surrounds an inner axial rim of the ring guide with radial clearance, wherein the inner axial rim defines at least one annular channel, and wherein the ring guide has at least one fixing protrusion extending radially inwardly toward the axis for engaging an annular slot in the piston rod and securing the ring guide to the piston rod. The at least one fixing protrusion is disposed at said inner axial rim of said ring guide and the height of said at least one fixing protrusion is larger than said radial clearance between said inner axial rim of said ring guide and said ring.
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公开(公告)号：US20220128114A1
公开(公告)日：2022-04-28
申请号：US17123061
申请日：2020-12-15
发明人： Arkadiusz MALEC , Piotr Stanislaw SUPREWICZ , Mateusz SARAPATA , Waldemar Jaroslaw RYNDAK , Dominik Jaroslaw KASPRZYK
摘要： A hydraulic damper assembly comprises a housing extending between a first end and a second end. A main piston is slidably disposed in the fluid chamber dividing the fluid chamber into a first chamber and a second chamber. A piston rod extends along a center axis and attaches to the main piston. An additional piston is coupled to the piston rod and axially spaced from the main piston. The additional piston includes a main body defining a compression channel and a rebound channel that allow fluid to flow through the additional piston. A securing member secures the additional piston to the piston rod and defines an outer groove. A piston ring is located in the outer groove between the additional piston and the securing member. The piston ring is radially spaced from the securing member to allow the piston ring to be in engagement with the housing.
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公开(公告)号：US20210404528A1
公开(公告)日：2021-12-30
申请号：US17333011
申请日：2021-05-28
摘要： A hydraulic damper assembly comprises a main tube defining a fluid chamber. An external tube extends about the main tube defining a compensation chamber between the main and external tubes. A main piston, located in the main tube, divides the fluid chamber into a compression chamber and a rebound chamber. A piston rod couples to the main piston. A base valve, located in the compression chamber, couples to the main tube. A hydraulic compression stop, located in the compression chamber, includes an additional piston, an insert, and a fixing member. The additional piston couples to the main piston. The insert, located in the compression chamber, couples to the base valve. The insert has a main section and a terminal section. The terminal section having an external diameter that is less than an external diameter of the main section.
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公开(公告)号：US11135888B2
公开(公告)日：2021-10-05
申请号：US16802251
申请日：2020-02-26
IPC分类号： B60G11/27 , B60G11/30 , B60G17/015 , F04B41/00 , B60G17/018
摘要： An air management system including at least one air spring and a compressor. The compressor defines a compartment having an inlet and an outlet. A reservoir is fluidly connected to the air spring and the compressor. A piston is moveable in the compartment and is reciprocally moveable in a compression stroke and an extension stroke in response to actuation of the motor in order to build-up air pressure at the outlet. The piston defines at least one passage extending between the extension chamber and the compression chamber, and at least one check valve positioned in the at least one passage such that air pressure in the compression chamber biases the piston toward the extension chamber to reduce a torque load on the motor during movement of the piston.
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公开(公告)号：US20210207678A1
公开(公告)日：2021-07-08
申请号：US16819007
申请日：2020-03-13
发明人： Roman BIELAK, II
摘要： A shock absorber assembly comprises a main tube disposed on a center axis between a first and a second end and defining a fluid chamber extending therebetween. A first piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression chamber and a rebound chamber. A piston rod attaches to the first piston for moving the first piston between a compression stroke and a rebound stroke. A hydraulic compression stop includes a second piston located in the compression chamber and attached to the piston rod. A tenon couples to the piston rod, located between the first piston and the second piston. The tenon includes a frequency dependent damping valve coupled to the first piston and an enclosure extending about the frequency dependent damping valve, coupled to the frequency dependent valve and the second piston, in fluid communication with the compression chamber.
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公开(公告)号：US20210131522A1
公开(公告)日：2021-05-06
申请号：US17089280
申请日：2020-11-04
摘要： A bracket comprises a body extending along a center axis between a first end and a second end. The body defines a first groove and a second groove. The first groove, located at the first end and flaring radially outwardly, presents a first slanted surface. The second groove, located at the second end and flaring radially outwardly, presents a second slanted surface. A pair of coupling members including a first and a second coupling member are respectively located in the first and second grooves for engagement with a housing of a hydraulic damper assembly. The first end includes at least one first deformation for retaining the first coupling member. The second end includes at least one second deformation for retaining the second coupling member. A hydraulic damper assembly including the bracket and a method of joining the bracket and the hydraulic damper assembly are also disclosed herein.
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公开(公告)号：US10850584B2
公开(公告)日：2020-12-01
申请号：US15584896
申请日：2017-05-02
发明人： Dominik Kasprzyk , Grzegorz Gasior
摘要： 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.
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