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公开(公告)号：US12098757B1
公开(公告)日：2024-09-24
申请号：US18131209
申请日：2023-04-05
申请人： Oshkosh Defense, LLC
CPC分类号： F16F9/49 , B60G17/08 , F16F9/16 , F16F9/368 , F16F9/512 , F16F15/161 , F16F2222/12
摘要： The damper assembly includes a tubular member, a rod, a primary piston, a secondary piston, and a resilient member. The tubular member includes a sidewall and a cap positioned at an end of the sidewall. The sidewall and the cap define an inner volume. The sidewall includes a shoulder separating the tubular member into a first portion and a second portion. The resilient member is disposed between the secondary piston and the cap and thereby is positioned to bias the secondary piston into engagement with the shoulder.
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公开(公告)号：US20240295251A1
公开(公告)日：2024-09-05
申请号：US18590458
申请日：2024-02-28
CPC分类号： F16F9/49 , B64C25/58 , F16F2222/126 , F16F2230/16
摘要： A gas backflow restrictor system as part of an aircraft strut includes the strut defining an inner volume having a first chamber and a second chamber; an orifice plate positioned within the inner volume and separating the first chamber and the second chamber; a standpipe attached to the orifice plate and extending longitudinally within the inner volume, the standpipe having openings extending through a thickness of a wall forming the standpipe, the standpipe further defining an inner channel; and a restrictor mounted within the inner channel, the restrictor having a shelf extending into the inner channel and forming a central opening; the shelf is to reduce gaseous flow through one or more of the openings of the standpipe and toward the orifice plate.
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公开(公告)号：US20240084870A1
公开(公告)日：2024-03-14
申请号：US17991388
申请日：2022-11-21
发明人： Peter KROPCZYNSKI , Jayson MOORE , Thomas MCGUIRE
CPC分类号： F16F9/49 , F16F9/185 , F16F9/483 , F16F2228/066 , F16F2228/14 , F16F2230/42 , F16F2232/08
摘要： An end-stop control valve can progressively add end-of-stroke damping resistance to complement the damping force provided by a main piston in a damper tube. The end-stop control valve may include a piston that is secured on a piston rod and selectively engages a catch piston, both of which are longitudinally movable within the damper tube. As the piston approaches the catch piston, an annular pocket of hydraulic fluid is created longitudinally and radially between the piston and the catch piston. As the piston continues to approach the catch piston, a cross-sectional area through which hydraulic fluid exits the pocket decreases, thereby gradually increasing the resistance of the end-stop control valve. In addition, a spring disc secured on the piston rod may contact a valve seat on the catch piston and provide resistance by elastically deforming in a longitudinal direction before the contact surfaces of the piston and catch piston engage.
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公开(公告)号：US20240035540A1
公开(公告)日：2024-02-01
申请号：US18487639
申请日：2023-10-16
申请人： Jason Krause
发明人： Jason Krause , Justin Smith
摘要： Embodiments of a hydraulic bump stop assembly may include a telescoping hydraulic cylinder containing hydraulic fluid. The telescoping cylinder may be located on a vehicle shock. Components of the shock may engage and compress the telescoping cylinder during the final stages of compression of the shock to prevent the shock from bottoming out. The telescoping cylinder has damping properties during compression and expansion due to hydraulic fluid being forced through orifices of one or more hydraulic fluid lines to and from a reservoir. Damping ratios may be adjusted by adjusting the size of the orifices. In some embodiments, the damping ratios may be adjusted remotely, such as from the driver compartment of the vehicle.
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公开(公告)号：US20240035539A1
公开(公告)日：2024-02-01
申请号：US18226312
申请日：2023-07-26
申请人： Öhlins Racing AB
发明人： Nils Göran NYGREN , Magnus DANEK
CPC分类号： F16F9/185 , F16F9/49 , F16F9/062 , F16F9/065 , F16F9/3242 , F16F9/486 , F16F2222/12 , F16F2232/08 , F16F2228/066
摘要： A damper filled with a damping medium in use comprising an inner tube; a movable assembly comprising a piston assembly and a piston rod attached to said piston assembly, said movable assembly being slidably disposed within the inner tube, the movable assembly defining a first working chamber and a second working chamber within the inner tube, the piston rod being disposed in the second working chamber; an end member disposed at an end of the inner tube, the end member having an inner surface facing towards the first working chamber; an actuated valve assembly being provided in the end member, said valve assembly being configured to control a damping medium flow entering or exiting the first working chamber, wherein the movable assembly comprises a stem assembly, said stem assembly being slidably connected to and partially embedded in said movable assembly.
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公开(公告)号：US20180355943A1
公开(公告)日：2018-12-13
申请号：US16105639
申请日：2018-08-20
申请人： Fox Factory, Inc.
发明人： Christopher Paul COX
CPC分类号： F16F9/48 , B60G13/08 , B60G17/08 , B60G2202/24 , B60G2206/41 , B60G2500/112 , B60G2500/114 , F16F9/18 , F16F9/19 , F16F9/3214 , F16F9/3242 , F16F9/49
摘要： Methods and apparatus for position sensitive dampening. In one aspect a fluid damper is provided comprising a damper chamber divided by a piston into a primary compression and a primary rebound chamber; a secondary compression chamber in fluid communication with the damper chamber; and an adjustable fluid meter controlling fluid flow out of the secondary compression chamber.
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公开(公告)号：US20180223941A1
公开(公告)日：2018-08-09
申请号：US15865157
申请日：2018-01-08
CPC分类号： F16F9/49 , F16F9/185 , F16F9/3214 , F16F9/3257 , F16F9/348 , F16F9/3484 , F16F9/3488 , F16F9/368 , F16F9/483 , F16F2234/04
摘要： 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.
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公开(公告)号：US20180058535A1
公开(公告)日：2018-03-01
申请号：US15682888
申请日：2017-08-22
发明人： Curtis SNYDER , Eric GUENO
IPC分类号： F16F13/08 , F16F15/027 , F16F9/49 , F16F15/02
CPC分类号： F16F13/085 , B62D24/02 , B62D25/088 , F16F9/49 , F16F13/103 , F16F15/022 , F16F15/0275
摘要： A hydraulic damper for a mount assembly includes a housing and a subassembly. The housing defines a cavity and is integrally formed to include a plurality of retention features. The subassembly is at least partially disposed in the cavity and is secured relative to the housing by the plurality of retention features. At least one of the plurality of retention features and the subassembly is elastically deformable in a radial direction from an initial diameter to an elastically deformed diameter such that the subassembly is sized to axially pass by the plurality of retention features in the initial diameter for insertion of the subassembly into the housing and the plurality of retention members radially extend over the subassembly in the elastically deformed diameter to secure the subassembly relative to the housing.
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公开(公告)号：US09835220B2
公开(公告)日：2017-12-05
申请号：US15151516
申请日：2016-05-11
摘要： The ring guide of the hydraulic stop mechanism defines at least one channel spaced from the passage, extending axially from the lower surface toward the upper surface, and terminating adjacent to the catcher. The catcher defines at least one window extending from the upper surface toward the lower surface establishing fluid communication with the channel. The retainer includes a second protrusion disposed at the coupling end of the retainer extending outwardly engaging the piston rod. The piston rod defines a pair of slots. A first slot is spaced from the rod support and the piston and extends about the piston rod for receiving the ring guide. A second slot is spaced from the piston and the first slot, and extends about the piston rod for receiving the second protrusion of the retainer. The ring guide includes a plurality of passages and channels alternating with one another about the ring guide.
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公开(公告)号：US20170114856A1
公开(公告)日：2017-04-27
申请号：US15295861
申请日：2016-10-17
申请人： Showa Corporation
发明人： Kojiro YOSHIDA
CPC分类号： F16F9/185 , B62K25/08 , B62K25/283 , F16F9/062 , F16F9/084 , F16F9/49 , F16F9/585 , F16F13/06
摘要： A damper includes a cylinder, a piston, a piston rod, a rod-side fluid chamber, a piston-side fluid chamber, an annular fluid chamber, and a stopper mechanism. The cylinder includes an inner tube and an outer tube. The rod-side fluid chamber is defined by the piston in the inner tube on a lower end side. The piston-side fluid chamber is defined by the piston in the inner tube on an upper end side. The annular fluid chamber is between the inner and outer tubes. At least one communication hole communicates the rod-side fluid chamber with the annular fluid chamber. A communication passage communicates the rod-side fluid chamber with the annular fluid chamber. A check valve in the communication passage allows fluid to flow from the annular fluid chamber to the rod-side fluid chamber and disallows the fluid to flow from the rod-side fluid chamber to the annular fluid chamber.
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