Class / Patent application number | Description | Number of patent applications / Date published |
188281000 | Resistance alters relative to direction of thrust member (e.g., high resistance in one direction, low in the other) | 47 |
20100270113 | ROTARY DAMPER - In a rotary damper | 10-28-2010 |
20110209954 | AIR DAMPER - There is provided an air damper including: a tubular cylinder | 09-01-2011 |
20110315494 | BYPASS FOR A SUSPENSION DAMPER - A vehicle suspension damper comprises a cylinder and a piston assembly including a damping piston along with working fluid within the cylinder. A bypass permits fluid to avoid dampening resistance of the damping piston. A fluid path through the bypass is controlled by a valve that is shifted by a piston surface when the contents of at least one predetermined volume is injected against the piston surface which acts upon the valve. In one embodiment, the bypass is remotely operable. | 12-29-2011 |
20120305353 | Shock Absorber with Pressure-Controlled Damping - A damper includes a pressure-sensitive damping control circuit that selectively permits fluid flow from a first chamber to a second chamber. A piston varies a volume of the first chamber. A blow-off piston is movable between a closed position, wherein fluid flow through the control circuit is substantially prevented, and an open position, wherein fluid flow through the control circuit is permitted. The damper also includes a first source of pressure. A fluid pressure created by compression of the damper applies an opening force to the blow-off piston moving the blow-off piston in a direction toward the open position against a resistance force provided by the first source of pressure. The resistance force exceeds the opening force until the pressure created by forces tending to insert the piston rod into the first fluid chamber exceeds the pressure in the first source of pressure by a predetermined amount. | 12-06-2012 |
20120305354 | Regulated Dashpot with Shock-Absorption Force Controls - A regulable dashpot with shock-absorption force controls, especially intended for motor vehicles, with at least one flow-regulating system including one or more shock-absorption components for the compression phase and/or for the decompression phase. The object is to allow the dashpot to shift continuously between the hard and soft phases, whereby the valve-adjustment intervals can be varied at intervals that are not unnecessarily short or even unattainable. At least one valve assembly is accordingly supplied with variable flow impedance by regulating valve. | 12-06-2012 |
20130062150 | SHOCK ABSORBER - A shock absorber having an elongated pressure tube and a piston slidably mounted in the pressure tube which divides the pressure tube into a first and second working chamber. An elongated piston rod is attached to the piston and moves in unison with the piston in both an extended and a compression direction. Movement of the rod in a compression direction decreases the volume of the first working chamber and increases the volume of the second working chamber, and vice versa. A control orifice and adaptive valve are fluidly connected in series between the first working chamber and a reservoir. A check valve is fluidly connected between the control orifice and the adaptive valve which opens only upon movement of the rod in a compression direction. | 03-14-2013 |
20130118846 | PNEUMATIC DECELERATION ARRANGEMENT WITH CONSTANT PERFORMANCE - In a pneumatic deceleration device comprising a cylinder with a piston movably guided therein by a piston rod and having at least one sealing element, with a displacement space and a compensation chamber disposed at opposite sides of the sealed piston, where a piston movement opposing force is generated by a pressure in the displacement space and a vacuum generated in the compensation chamber, a pneumatic connection is formed from the displacement space and the compensation chamber to the ambient when the piston is in its end position where the displacement space is at its maximum value. | 05-16-2013 |
20140102840 | ROTARY TYPE DAMPER - A rotary-type damper includes a housing filled with a working fluid, a shaft penetrating inside the housing and placed in a rotatable manner, a housing pin provided on the inner circumference of the housing to reach the side of the shaft used for limiting the movement of the working fluid, and an axis pin for coupling with the shaft to rotate with the shaft, and closely contacting the side of the shaft and the inner circumference of the housing as the position thereof varies according to the rotating direction of the shaft. The present invention increases the durability and the period of use, easily enables an accurate control of the working fluid, thereby eliminating the requirement for high precision in processing the component members, and enables the control of a unidirectional damping and the rotational speed of a rotary body which is the target of damping. | 04-17-2014 |
20140182982 | BUFFERING DEVICE - A buffering device includes a cylindrical casing and a piston module movably mounted in the cylindrical casing. The cylindrical casing includes a base plate and a shielding piece pivotally attached to the base plate. An air inlet and an air outlet are defined in the base plate. A diameter of the air inlet is greater than that of the air outlet. | 07-03-2014 |
20160153516 | SUSPENSION DAMPER WITH REMOTELY-OPERABLE VALVE | 06-02-2016 |
188282100 | Via valved orifice in thrust member | 37 |
20090127041 | Vibration damper with amplitude selective damping force - Vibration damper with amplitude-selective damping force that includes a piston rod, which is guided with freedom of axial movement in a damping medium-filled cylinder. The piston rod carries a piston arrangement, which divides the cylinder into a working space on the side of the piston with the piston rod and a working space on the side of the piston opposite the piston rod, where a flow connection, which, as a function of the movement of the piston rod, determines a damping force by means of a switching ring, which moves axially between two stop surfaces, in conjunction with at least one axially movable valve ring in a switching ring groove. The switching ring cooperates with one stop surface to form the boundaries of an annular space adjacent to the working space on the piston rod side and with another stop surface to form the boundary of an annular space adjacent to the working space on the side of the piston opposite the piston rod. The axial extension of the switching ring groove for the axially movable valve ring is large enough to guarantee that the damping medium can flow around the valve ring over a relevant stroke range of the piston rod. | 05-21-2009 |
20090272611 | Damping force adjustable fluid pressure shock absorber - A first piston and a second piston coupled to a piston rod are fitted in a cylinder, and an intermediate chamber is formed between the first and second pistons. A compression-side check valve and an extension-side check valve are provided at the first piston and the second piston. An extension-side main valve and a compression-side main valve are disposed in the intermediate chamber. A downstream side of a damping force adjusting valve is connected to the intermediate chamber. Inner pressures of an extension-side backpressure chamber and a compression-side backpressure chamber are adjusted by the damping force adjusting valve, whereby valve opening of the extension-side and compression-side main valves is controlled. Hydraulic fluid of the downstream side of the damping force adjusting valve is first sent into the intermediate chamber, and then is sent to a cylinder upper chamber or a cylinder lower chamber. Due to this arrangement, it is possible to prevent a sudden drastic change in a hydraulic fluid pressure and thereby to generate a stable damping force. | 11-05-2009 |
20100096229 | HYDRAULIC SHOCK ABSORBER - A hydraulic shock absorber which includes a piston which is slidably fitted into a cylinder and partitions the cylinder into first and second fluid chambers; and a piston rod which is connected to the piston and slidably penetrates through an end wall of the cylinder, wherein the piston rod penetrates through the piston and includes on the outer circumferential surface of the piston rod at least one groove which communicates between the first and second fluid chambers, and the first and second fluid chambers are communicated with each other through the at least one groove. | 04-22-2010 |
20100224454 | Stepless pressure-varying shock absorber - A shock absorber includes a partitioning board fixed in a chamber of a cylinder to separate the chamber into first and second compartments receiving a damping fluid. The partitioning board includes a first through-hole in communication with the first and second compartments. A buffering disc is mounted in the chamber and forms a bottom end of the second compartment. A rod is slidably received in the chamber and slideably extends through the first through-hole. A damping valve is securely mounted around the rod and is slideably received in the first compartment. The rod has downwardly decreasing cross sections. A gap is formed between an inner periphery of the first through-hole and an outer periphery of the rod. When the rod moves downward, an area of the gap decreases gradually to gradually increase resistance to the damping fluid flowing from the first compartment into the second compartment via the first through-hole. | 09-09-2010 |
20110056781 | Fluid pressure shock absorber | 03-10-2011 |
20110127129 | DAMPER DEVICE - A damper device is provided with a cylinder body and a piston body, and provides braking for movement or relative movement of an object to be braked by attaching at least either the cylinder body or the piston body to the object to be braked. The piston body is provided with a seal ring for sealing between the piston body and the cylinder body. When a pressure difference between an inner space, located between the piston body and a deep inner section of the cylinder body, and the outside becomes a predetermined volume or above due to the movement or the relative movement of the piston body, one part of the seal ring is deflected and deformed so as to open a path for interconnecting the inner space and the outside. | 06-02-2011 |
20110290603 | SHOCK ABSORBER - A rod acceleration reducing mechanism is provided in a bottom-side oil chamber in an inner tube. The rod acceleration reducing mechanism includes a housing having a cylindrical accommodating casing screwed onto a fastening bolt of a bottom valve and a cap, a free piston displaceably fitted in the housing to define variable chambers at vertically opposite sides thereof, and elastic disks applying an elastic resistance to the displacement of the free piston. The variable chambers formed in the housing are variable in volume in response to pressure changes in the bottom-side oil chamber and the reservoir chamber. Thus, rod vibration can be generated by the rod acceleration reducing mechanism to reduce generation of rapping noise during running of the vehicle. | 12-01-2011 |
20120018264 | ADJUSTABLE INTERNAL BYPASS SHOCK ABSORBER FEATURING A FLUID FLOW REGULATOR - In one embodiment, an internal bypass shock absorber is disclosed whose compression and rebound resistance can be independently adjusted and is position dependent. The shock absorber features a fluid flow regulator coupled to a hollow chamber opening of a partially hollow piston rod. The fluid flow regulator may also feature a plurality of compression orifices and rebound orifices, and a compression valve stack and rebound valve stack each having one or more deflection discs. The number, diameter, and thickness of the deflection discs of the stacks can be adjusted to independently control compression and rebound resistance by controlling the flow of fluid between the first and second chambers of the cylinder housing of the shock absorber. The shock absorber may also have a tapered needle that controls the position at which the shock exhibits its maximum resistance. | 01-26-2012 |
20120085607 | DAMPER FOR FURNITURE - The invention relates to a damper ( | 04-12-2012 |
20120118689 | AIR DAMPER - An air damper capable of stabilizing a damping force of the air damper is obtained. | 05-17-2012 |
20120145496 | MOTOR VEHICLE SHOCK ABSORBER - The invention relates to a shock absorber for a wheel suspension of a motor vehicle, comprising a) a damper tube ( | 06-14-2012 |
20120160622 | MAGNETIC VALVE FOR SHOCK ABSORBERS - A shock absorber having a valve controlling the flow rate of fluid between a compression chamber and a rebound chamber in a housing and separated by a piston. The valve has an orifice component and a blocker component, one of which has a permanent magnet, and the other of which has a magnetically permeable material. Upon the application of sufficient fluid pressure, the blocker component is forced away from the orifice component, despite the magnetic bias that tends to attract the two structures. Because the magnetic force decreases as the two components are spaced farther apart, the shock absorber has excellent performance characteristics. Alternatively, a mechanical spring urges the blocker closed, and magnetic attraction between the blocker and a spaced opener mitigates the increased force of the compressed spring tending to close the valve. | 06-28-2012 |
20120247890 | HYDRAULIC SHOCK ABSORBER - In a hydraulic shock absorber, a damping force generating device provided between a piston side oil chamber of a cylinder and a rod side oil chamber is provided with a through-hole which communicates the piston side oil chamber of the cylinder with the rod side oil chamber of the cylinder via an outer flow path of the cylinder. A leading end portion of a piston rod is provided with a needle which can come in and out of the through-hole of the damping force generating device, and an opening degree of the through-hole can be varied by the needle according to a forward and backward position of the piston rod with respect to the oil chamber of the cylinder. | 10-04-2012 |
20130081912 | HYDRAULIC SHOCK ABSORBER - In a hydraulic shock absorber | 04-04-2013 |
20130161138 | VALVE FOR SHOCK ABSORBERS - A shock absorber having a valve controlling the flow rate of fluid between a compression chamber and a rebound chamber in a housing and separated by a piston. The valve has an orifice component and a blocker component, one of which has a permanent magnet, and the other of which has a magnetically permeable material. Upon the application of sufficient fluid pressure, the blocker component is forced away from the orifice component, despite the magnetic bias that tends to attract the two structures. Because the magnetic force decreases as the two components are spaced farther apart, the shock absorber has excellent performance characteristics. Alternatively, a mechanical spring urges the blocker closed, and magnetic attraction between the blocker and a spaced opener mitigates the increased force of the compressed spring tending to close the valve. | 06-27-2013 |
20130161139 | DAMPING CYLINDER - A damping cylinder ( | 06-27-2013 |
20130192940 | GAS SPRING AND DAMPING FORCE GENERATING MECHANISM - A tubular piston mounted at one end of a rod accommodated inside a cylinder and partitioning the space inside the cylinder includes first groove and second groove recessed from an outer circumferential surface thereof and aligned side by side along a centerline direction of the cylinder, and a communication passage communicating an end face on the side of an opening in the centerline direction of the cylinder with one of the two grooves (second groove) formed on the side of the opening. A rubber-made annular sealing member having an outer circumferential surface contacting an inner circumferential surface of the cylinder is fitted in the second groove. A resin-made restrictor ring that is a C-shaped member fitted in the first groove has an outer circumferential surface positioned closer to the inner circumferential surface of the cylinder than the outer circumferential surface of the piston. | 08-01-2013 |
20130264157 | ADJUSTMENT-FREE CUSHIONING AIR CYLINDER - An adjustment-free cushioning air cylinder includes an air cylinder body, a piston, a first check valve, an upper air way, a second check valve and a lower air way. An air chamber is formed inside the air cylinder body. The piston slides in the air chamber. One end of the piston extends to the external of the air cylinder body. The piston does a reciprocating movement in the air chamber and divides the air chamber into an upper air chamber and a lower air chamber. The first check valve is disposed in the piston, one end of the first check valve is connected to the upper air chamber, and the other end is connected to the lower air chamber. The upper air way connects the upper air chamber with the outside. The adjustment-free cushioning air cylinder of the invention does not need to adjust the entering flow rate of the air, but the entering flow rate can be automatically adjusted to produce cushioning resistance as the user is walking according to the walking speed. The present invention has a simple structure, high cushioning performance, lower cost, and is not easy to damage, thus can greatly improve the product competitiveness. | 10-10-2013 |
20140020994 | ROTARY DAMPER - The rotary damper comprises: case having viscous fluid | 01-23-2014 |
20140190779 | ROTATIONAL SPEED REDUCTION DEVICE FOR TRUCK TAILGATE - A rotational speed reduction device | 07-10-2014 |
20140251741 | FLUID-TYPE SHOCK ABSORBER, PARTICULARLY FOR DOORS OF ELECTRICAL HOUSEHOLD APPLIANCES - A fluid-type shock absorber, particularly for doors of electrical household appliances, comprising a shock absorber body, in which a substantially cylindrical chamber is defined that accommodates coaxially a piston provided with a stem that protrudes from at least one axial end of the chamber, the piston divides the chamber into two parts, the piston is accommodated so that it can slide axially within the chamber, moreover at least one duct is provided for connecting the two parts of the chamber in order to allow the transit of a fluid from one part to the other of the chamber for the axial sliding of the piston with respect to the shock absorber body, the connecting duct is defined in the piston and has a calibrated portion thereof that is defined on a first end face of the piston, elements are provided for varying the passage section of the connecting duct available for the fluid. | 09-11-2014 |
20190145485 | HYDRAULIC BUFFER ASSEMBLY | 05-16-2019 |
188282200 | Valve actuated by electrical system | 5 |
20090020382 | Piston With An Integral Electrically Operated Adjustment Valve For A Hydraulic Vibration Damper - A vibration damper includes a cylinder within which a piston is slidably received thereby defining compression and rebound chambers. The piston has a bore with a valve seat through which fluid flows between those chambers. A poppet selectively engages the valve seat and forms a pilot chamber an opposite side of the poppet from the valve seat. The greater pressure within the compression or rebound chambers is applied by a first logic arrangement to the pilot chamber and a pilot spool control a fluid flow between the pilot chamber and a pressure cavity in the piston body. A second logic arrangement connects the pressure cavity to either the compression and rebound chamber which has the lesser pressure. A solenoid that moves the pilot valve element to control pressure in the pilot chamber and thus the amount that the poppet moves to allow fluid flow through the piston. | 01-22-2009 |
20090071776 | Bi-state solenoid with integral rebound cut-off - A hydraulic damper including a housing, a piston assembly slideably received within the housing to define a piston chamber and a rod chamber, the piston assembly including a valve and a solenoid, the solenoid including an integral piston, wherein the valve is actuateable by the solenoid, and a cup disposed in the rod chamber, the cup being generally sealingly engageable by the integral piston. | 03-19-2009 |
20140262648 | ROD GUIDE ASSEMBLY WITH MULTI-PIECE VALVE ASSEMBLY - A shock absorber may include a piston rod, a first rod guide member, a second rod guide member, and an electronically controlled valve assembly. The first rod guide member is concentrically disposed about the piston rod, and the second rod guide member is concentrically disposed about the piston rod and is adjacent the first rod guide member. The electronically controlled valve assembly may include a coil assembly and a valve guide assembly. The valve guide assembly may be disposed adjacent to the coil assembly and may be concentrically disposed about the second rod guide member. The valve guide assembly includes a spool and defines a valve inlet, a valve outlet, and a chamber. The spool is disposed within the chamber and controls the flow of fluid between the valve inlet and the valve outlet. | 09-18-2014 |
20170234396 | METHOD FOR OPERATING A CONTROLLABLE SHOCK ABSORBER FOR MOTOR VEHICLES | 08-17-2017 |
188282400 | System having distinct selections (e.g., hard, medium, soft) | 1 |
20100163356 | DAMPER - The invention relates to a damper having a damper cylinder, in which a piston plunger is guided via a piston rod. For the adjustment of characteristic damper values, the flow of a damper fluid can be controlled via control mechanism disposed inside the damper cylinder, which controls the flow of the damper fluid in a first flow direction using a first adjusting element and in a second flow direction using a second adjusting element. According to the invention, the first and second adjusting elements are provided with at least one spring element. The spring rate of at least one of the spring elements can be adjusted for defining a damping behavior using corresponding defining or predetermining elements. | 07-01-2010 |
188282500 | Flexible flap-type valve (e.g., compression washers) | 9 |
20090107782 | Shock Absorber - A shock absorber ( | 04-30-2009 |
20090120746 | Damping Element - The invention relates to a damping element for a vibration damper that works with hydraulic damping fluid. The fundamental structure of the damping element includes a one-piece base body configured as a circular disk, which has a plurality of first flow-through openings, each having an entry cross-section in a first face side of the base body, as well as a plurality of second flow-through openings, each having an entry cross-section in an opposite, second face side of the base body, as well as circular valve disks on both face sides of the base body, which rest against a support surface of the base body, disposed in the center, and at least partially close off exit cross-sections of the flow-through openings. The exit cross-sections are surrounded by control edges, which form contact surfaces for the valve disks and project beyond the support surface as well as the entry cross-sections. The height of the control edges increases with an increasing radial distance from the center point of the base body in the form of a circular disk. According to the invention, the flow-through openings have a flow channel section that is preferably cylindrical and opens into a larger exit cross-section bordered by the control edges. | 05-14-2009 |
20110017557 | SHOCK ABSORBER WITH DUAL PISTON - A shock absorber comprising a damping cylinder is divided into a first damping chamber and a second damping chamber by a main piston device. The main piston device comprises a first main piston and a second main piston. The main pistons comprise continuous ducts that are delimited in a direction of flow by first and second flow limiters. The main pistons are mounted on a piston rod. The piston rod has an axially extending and continuous cavity through which damping medium can flow between a pressurized chamber and a respective damping chamber. The damping medium flows via an interspace delimited by the first main piston and the second main piston out into the damping chambers via pressurization ducts delimited by the first flow limiters. The first flow limiters lift axially from the main piston with substantially maintained external form in the opening process so that a flow path is created both between the main piston and the whole or parts of the inner periphery of the first flow limiter as well as between the main piston and the outer periphery of the first flow limiter. | 01-27-2011 |
188282600 | Having flow passage, cutout, aperture, slot, etc. | 6 |
20090008195 | Vibration isolator - There is provided a vibration isolator in which a restriction passage for causing a main fluid chamber and a sub-fluid chamber to communicate with each other is changed over to one of a first restriction passage and a second restriction passage according to a change in the frequency of vibrations in a short period of time, and the size of the isolator is made small efficiently. A plunger member | 01-08-2009 |
20090090587 | Speed Responsive Damper and Impact Absorbing Damper Device - A speed responsive damper ( | 04-09-2009 |
20100000832 | LOW-NOISE SHOCK ABSORBER - Shock absorber provided with a piston having a number of constantly open connecting channels which connect the two sides of the piston, and having a number of connecting channels to be opened and closed by element of a valve. The valve includes a plate valve which under the influence of flow therethrough, i.e. the pressure difference over the piston, on the outward movement of the shock absorber can be closed to a greater or lesser extent. On the inward movement, unimpeded flow of fluid through the piston can occur. A flow-through path is bounded by the corresponding connecting channels and the valve together with the upper side of the piston. In the rest position there is a flow-through possibility for fluid when the shock absorber fixings move away from each other, and when the shock absorber fixings move away from each other more quickly the flow-through cross section gradually decreases until the valve closes completely. | 01-07-2010 |
20130180813 | FLUID-FILLED SHOCK ABSORBER - A shock absorber configured to mount within a remote control vehicle. The shock absorber includes a cylindrical housing, a piston rod, and an acircular piston head. The piston head includes a plurality of substantially flat surfaces disposed on sides of the piston head that form bypass gaps between the piston head and the cylindrical housing. The acircular piston head includes a plurality of bypass apertures disposed through the piston head in an angularly asymmetrical configuration. The acircular piston head is generally octagon shaped. The acircular piston head includes a plurality of spaced arcuate edges sized to come in contact with an interior surface of the cylindrical housing. The shock absorber includes a plurality of bypass valves formed by cooperative operation of a shim coupled against the bypass apertures, such that fluid is permitted to flow through the bypass valves in a first direction and is restricted in a second direction. | 07-18-2013 |
20140060985 | HYDRAULIC SHOCK ABSORBER AND VALVE - A hydraulic shock absorber includes a valve body having a second valve which is fixed to the valve body on a central axis CL side of the second valve and covers an open end of a second oil passage in the valve body. The second valve is deformable in a direction away from the valve body when the valve is applied with force from the valve body side. The second valve is configured: (a) to include a first through-hole formed in a circumferential direction thereof, (b) have lower stiffness, with respect to force from the valve body side, on a second through-hole side than on a third through-hole side and (c) such that a first corner portion C | 03-06-2014 |
20140069753 | MULTI-TUNEABLE DEGRESSIVE VALVE - A shock absorber includes a piston disposed within a pressure tube. A valve assembly is attached to the piston. The valve assembly defines a first fluid flow through an always open fluid passage; a second fluid flow due to elastic deformation of a valve disc of the piston assembly; and a third fluid flow due to movement of the entire valve disc away from the piston. In one embodiment, the valve assembly is designed to be pre-assembled at an off-line and/or off-site location. | 03-13-2014 |
188282800 | Spring-loaded valve | 1 |
20120181126 | ADJUSTABLE SHOCK ABSORBER - Shock absorber comprising a piston inside which a sleeve is present which can be operated separately from the piston. This sleeve is provided with through-flow conduits which can cooperate with apertures, which are fitted at a vertical distance, of a part of the piston in order to provide an auxiliary flow when the piston is displaced in the cylinder. Such auxiliary flow enters into a chamber which is delimited by one or more spring plates which act on a sleeve which loads the main valve against opening when it is pressed down by the spring plate. By filling the chamber with fluid, the load applied on the sleeve by the spring plate is reduced and the load on the main valve decreases, as a result of which the latter opens more readily. | 07-19-2012 |