| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 188322150 | Piston valve detail (e.g., seat design, structural arrangement, metering element) | 48 |
| 20080223673 | HYDRAULIC SHOCK ABSORBER - A shock absorber includes a cylinder tube connected to one portion of a shock absorbing body, a main piston rod extending from a piston with its extension end being connected to another portion of the shock absorbing body, a sub piston rod extending from the piston, an oil chamber pressurizing device arranged to pressurize a hydraulic oil, and damping force generators arranged to generate a damping force by allowing the hydraulic oil to flow between first and second oil chambers. A sealed space for containing an extension end of the sub piston rod is provided. Gas having a pressure larger than atmospheric pressure and smaller than a pressure applied on the hydraulic oil by the oil chamber pressurizing device is filled in the sealed space. | 09-18-2008 |
| 20080223674 | Damping force generating mechanism - A damping force generating mechanism (V) comprises a front valve body ( | 09-18-2008 |
| 20090000891 | Shock absorber - A piston connected with a piston rod is slidably fitted in a cylinder having a hydraulic fluid sealed therein. An extension-side main disk valve generates a damping force in a high piston speed region against the flow of hydraulic fluid in an extension-side passage. A sub-passage bypasses the extension-side main disk valve, and an extension-side sub disk valve generates a damping force in an intermediate piston speed region. A compression-side main disk valve generates a damping force in the high piston speed region against the flow of hydraulic fluid in a compression-side passage. A sub-passage bypasses the compression-side main disk valve, and a compression-side sub disk valve generates a damping force in the intermediate piston speed region. Damping force characteristics in the intermediate and high piston speed regions can be set according to the valve-opening characteristics of these disk valves. Therefore, it is possible to increase the degree of freedom for setting damping force characteristics. | 01-01-2009 |
| 20090000892 | Shock absorber apparatus - A shock absorber includes a first cylinder having a first fluid port and a second cylinder having a second fluid port. A response adjustment mechanism is connected in fluid transmission relation between the first and second fluid ports. | 01-01-2009 |
| 20090032346 | Semi third tube design - A shock absorber has an external valve that controls the damping loads for the shock absorber. The external valve extends generally parallel with the axis of the shock absorber and is attached to the reserve tube of the shock absorber. The inlet to the external valve is in communication with an intermediate chamber which is in communication with the working chamber of the shock absorber. The outlet of the valve is in communication with the reserve chamber of the shock absorber. The external valve controls the damping loads in both a compression and an extension stroke of the shock absorber. | 02-05-2009 |
| 20090090588 | Damping valve - A damping valve includes a valve body, the valve body having at least one through hole and a valve seating surface. There is at least one valve disk configured to mate with the valve seating surface and at least partially seal the through hole and a first spring configured to bias the at least one valve disk towards the valve seating surface. A stop ring is configured to support the first spring on a first surface and an intermediate ring is configured to be supported by the stop ring on a second surface of the stop ring opposite the first surface. A second spring is configured to bias the intermediate ring against the stop ring. | 04-09-2009 |
| 20090145708 | SHOCK ABSORBER - Disclosed herein is a shock absorber for damping vibration transmitted to a vehicle according to a road state. The shock absorber includes a cylinder and a piston valve disposed within the cylinder and connected to a piston rod to divide the cylinder into a first chamber and a second chamber. The piston rod includes a hollow chamber formed within the piston rod, first and second orifices formed in upper and lower ends of the hollow chamber and connected to the first and second chambers, respectively, a floating piston disposed within the hollow chamber to move up and down and to divide the hollow chamber into upper and lower chambers, and a moving mechanism formed in the hollow chamber to move an operating fluid to upper and lower portions of the floating piston. The shock absorber can change a damping force according to a displacement of the piston rod, thereby improving driving comfort and stability of the vehicle. | 06-11-2009 |
| 20090236194 | VALVE APPARATUS OF SHOCK ABSORBER - A valve apparatus for a shock absorber includes a piston valve having rebound and compression passages, a sliding valve movably coupled to a piston rod to block and open the rebound passages, and at least one valve disc provided at a lower side of the sliding valve and separated a predetermined distance from a washer by a retainer. The valve disc can be bent while resiliently supporting an outer periphery of the sliding valve. The valve disc has an increased size, so that easy control of a damping force at low speed and a gradual increase of the damping force even at high speed can be obtained by the shock absorber having a decreased size. | 09-24-2009 |
| 20090260938 | SHOCK ABSORBER - A shock absorber has a seat disk seated on a valve seat of a piston. A disk valve opens and closes a slot provided in the seat disk to extend in the circumferential direction thereof. In a low piston speed region, an orifice passage generates a damping force of orifice characteristics. In an intermediate piston speed region, the disk valve opens to generate a damping force of valve characteristics. In a high piston speed region, the seat disk opens to prevent an excessive increase in damping force. The disk valve partially opens the slot relative to the circumferential direction to gradually increase the flow path area, thereby preventing a sharp change in damping force in a transitional region from the low to intermediate piston speed region. | 10-22-2009 |
| 20090294232 | SHOCK ABSORBER - A hydraulic shock absorber has a cylinder having a hydraulic fluid sealed therein and a piston connected with a piston rod and slidably provided in the cylinder. The piston is provided with a circular main seat portion to form a main valve chamber communicating with an extension passage. Arcuate sub-seat portions are provided in concentric relation to the main seat portion to form sub-valve chambers. A disk valve is seated on the main and sub-seat portions to form clearances between them that always communicate between the main and sub-valve chambers. The disk valve opens upon receiving the pressure in the main and sub-valve chambers. The clearances restrict the flow of hydraulic fluid flowing out through the sub-valve chambers at the beginning of opening of the disk valve to prevent a sharp change in damping force. The concentric arrangement of the main and sub-seat portions facilitates the setting of an initial deflection for the disk valve. | 12-03-2009 |
| 20090301831 | NESTED CHECK HIGH SPEED VALVE - A shock absorber has a compression valve assembly which functions during a compression stroke, a rebound valve assembly which functions during a rebound stroke and a velocity sensitive valve which is in series with one or both of the compression valve assembly and the rebound valve assembly. The compression valve assembly, the rebound valve assembly and the velocity sensitive valve can be incorporated into a piston assembly, a base valve assembly or both. | 12-10-2009 |
| 20090321203 | Hydraulic Damper With Compensation Chamber - 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. | 12-31-2009 |
| 20100038197 | Damping device - A damping device includes a cylinder in which a resilient member and a piston are received. A cover assembly and a seal member seal the cylinder and damping medium is filled in the cylinder. The piston includes a piston body, a connecting portion connected with one end of the resilient member, and a neck portion connected between the piston body and the connecting portion. The piston body has an opening penetrating through the piston body. A control valve is movably mounted to the neck portion to control the opening during operation. A piston rod has one end connected with the piston body and another end extending out from the cylinder. A damping member is located between the piston and the cover assembly. The traveling velocity of the piston is controlled by the control valve to close or to open the opening through which the damping medium passes. | 02-18-2010 |
| 20100236882 | HYDRAULIC SHOCK ABSORBER - In a hydraulic shock absorber | 09-23-2010 |
| 20100326781 | PISTON VALVE ASSEMBLY OF SHOCK ABSORBER - Disclosed is a piston valve assembly of a shock absorber. The shock absorber includes an inner cylinder completely filled with an operating fluid, an outer cylinder disposed outside the inner cylinder and partially filled with the fluid, and a piston rod. The piston valve assembly is provided to a lower end of the piston rod to divide the inner cylinder into rebound and compression chambers. The piston valve assembly includes a compression valve body having a compression fluid passage, a rebound valve body having a rebound fluid passage, an upper disc valve on the compression valve body, a lower disc valve below the rebound valve body, and a sliding piston sealingly adjoining the inner cylinder and having a penetration fluid passage. The sliding piston is slidably disposed between the compression and rebound valve bodies to slide while opening or closing a space between outer surfaces of the compression and rebound valves. | 12-30-2010 |
| 20110024247 | DAMPING FORCE GENERATING MECHANISM FOR HYDRAULIC SHOCK ABSORBER | 02-03-2011 |
| 20110031077 | HYDRAULIC SUSPENSION DAMPER - The invention relates to a hydraulic damper ( | 02-10-2011 |
| 20110048880 | INVERTED STRUT COMPRISING AN AIR DAMPER COMBINED WITH A HYDRAULIC STOP - A shock absorber includes a hydraulic compression stop. The hydraulic stop includes a pressure tube surrounding the pressure tube of the shock absorber and a piston in hydraulic communication with the interior of the pressure tube. The piston can be disposed within the pressure tube and can be attached to the pressure tube or to the shock absorber. The hydraulic stop can also include a hydraulic fluid chamber and the piston can be disposed within the hydraulic fluid chamber. | 03-03-2011 |
| 20110056784 | Snubber with Secondary Fluid Reservoir - Methods and systems for preventing vacuums within a snubber during a predetermined condition are disclosed. The snubber includes a body at least partially filled with fluid, a piston capable of sliding within the fluid in the body, a lockup valve that allows the piston to move freely under operating conditions and limits the motion of the piston under a predetermined set of conditions, and a reservoir positioned within the piston rod containing a reserve of fluid. | 03-10-2011 |
| 20110079476 | HYDRAULIC DAMPER SPOOL VALVE - A hydraulic valve includes a main body, a valve body, a piston, a valve sleeve, a spool and a resilient energy storage member. The valve body and the piston are disposed within the main body. The valve body defines a first chamber, a second chamber, and a cylindrical passage connecting the first chamber and the second chamber. The valve sleeve is moveably disposed in the cylindrical passage. The spool is moveably disposed within the bore of the valve sleeve. The resilient energy storage member may be disposed between the valve sleeve and valve spool. The resilient energy storage member is compressed as pressure is induced in one of the first chamber or the second chamber such that the valve sleeve and the spool move relative to one another so that at least a portion of the shaped aperture is exposed to the first chamber or second chamber to allow a proportional amount of hydraulic fluid to flow between the first chamber and the second chamber. | 04-07-2011 |
| 20110114428 | VELOCITY PROGRESSIVE VALVING - A shock absorber has a valve assembly having a valve that is biased away from a valve body. A controlled restriction is defined between the valve and the valve body. During stroking of the piston of the shock absorber, the valve moves toward the valve body to close the restriction. The valve assembly can be used in the piston assembly, the base valve assembly or both. | 05-19-2011 |
| 20110139558 | BARREL-TYPE ROTARY DAMPER - A rotary damper ( | 06-16-2011 |
| 20110203889 | ASSEMBLY AND DISASSEMBLY-TYPE DAMPING FORCE ADJUSTABLE SHOCK ABSORBER - An assembly and disassembly-type damping force adjustable shock absorber is provided comprising a cylinder casing, an upper cap and a lower cap, a bottom valve body mounted on the lower cap, a rod inserted into the upper cap, and a piston valve body disposed on an end of the rod, wherein the piston valve body faces the bottom valve body, wherein the piston valve body determines a flow direction of the working fluid between the upper chamber and the lower chamber when the rod is expanded and contracted. | 08-25-2011 |
| 20110209957 | SHOCK ABSORBER - A piston coupled with a piston rod is inserted in a cylinder sealingly containing operating fluid. A substantially circular outer seat, an inner seat, disk support portions, an intermediate seat are provided on the lower end surface of the piston. The disk support portions are disposed between the outer seat and the inner seat. The intermediate seat is disposed between the disk support portions and the outer seat. The protruding height of the disk support portion is shorter than the protruding height of the outer seat, and equal to or taller than the protruding height of the inner seat. The protruding height of the intermediate seat is shorter than the protruding height of the outer seat, and equal to or taller than the protruding height of the disk support portions. A disk valve, which is constituted by a large-diameter disk, a first intermediate-diameter disk, a second intermediate-diameter disk, and a small-diameter disk, is seated on the outer seat, the inner seat, disk support portions, and the intermediate seat. Then, the disk valve | 09-01-2011 |
| 20110240424 | Vibration Damper with Integrated Level Control - A vibration damper with integrated level control includes a cylinder in which a hollow piston rod with a piston outfitted with damping valves is guided so as to be axially movable. The piston divides the cylinder into a workspace on the piston rod side and a workspace remote of the piston rod. The workspace on the piston rod side is limited at the end by a piston rod guide, and the workspace remote of the piston rod is connected to a pump space by at least one connection opening in a separating wall. The separating wall supports a hollow rod on which the piston slides and controls the pump operation of the vibration damper. A compensation space receives the damping volume displaced by the piston rod due to a dynamic load, and the piston rod guide is guided in the cylinder so as to be movable axially, and the connection opening in the separating wall is outfitted with a valve that opens in the direction of the work space remote of the piston rod. | 10-06-2011 |
| 20110290604 | TWO STAGE VALVE AND HYDRAULIC DAMPED VALVE - A shock absorber includes a two stage valve assembly that has two valve discs. The second valve disc defines the first stage at lower valve pressures and the first valve disc defines the second stage at higher valve pressures. The two valve discs can be defined by a single piece component or they can be separate components. The second valve disc can permit fluid flow by deflection of the second valve disc or by movement of the entire second valve disc. The two stage valve assembly can be incorporated into the piston assembly of the shock absorber and/or the two stage valve assembly can be incorporated into a base valve assembly. | 12-01-2011 |
| 20120168269 | Damper - A damper includes a damper cylinder, a piston unit comprising a piston ram guided via a piston rod in the damper cylinder, a flow device arranged within the damper cylinder for the passage of a damper fluid flow, which device includes at least one control gap for setting a characteristic damping curve, and an adjustment device arranged within the damper cylinder for controlling the control gap, which device includes at least two spring elements and at least one guide body. The adjustment device includes at least one valve piston that together with the guide body forms the at least one control gap. | 07-05-2012 |
| 20120273311 | ADJUSTABLE DAMPING VALVE DEVICE FOR A VIBRATION DAMPER - Damping valve device for a vibration damper, including an actuator that acts on a preliminary stage valve body of a preliminary stage valve. The preliminary stage valve body is arranged in a pre-loading line with a main stage valve body of a main stage valve. The lifting path of the main stage valve body is proportional to the lifting path of the preliminary stage valve body, and the damping characteristic of the damping valve device is influenced by a valve spring arrangement. The preliminary stage valve body controls an adjustable spring compressor that determines the pre-loading of a main stage valve spring is part of the valve spring arrangement. | 11-01-2012 |
| 20120325604 | SHOCK ABSORBER - Disclosed herein is a shock absorber for damping vibration transmitted to a vehicle according to a road state. The shock absorber includes a cylinder and a piston valve disposed within the cylinder and connected to a piston rod. The piston rod includes a hollow chamber formed within the piston rod, a floating piston disposed within the hollow chamber to move up and down and to divide the hollow chamber into upper and lower chambers, and a moving mechanism formed in the hollow chamber to move an operating fluid to upper and lower portions of the floating piston. The shock absorber can change a damping force according to a displacement of the piston rod, thereby improving driving comfort and stability of the vehicle. | 12-27-2012 |
| 20130001031 | PNEUMATIC CYLINDER HAVING A SELF-ADJUSTING END POSITION DAMPING - A pneumatic cylinder having end position damping of the cylinder piston is controlled by means of a vent path and a control valve, the control valve comprises a control piston, the control side of which is pressurized by a pneumatic pressure which exists in a control chamber. The movement of the control piston into its closing position is pneumatically controlled by the increasing pressure in the damping chamber during the beginning of the damping. No additional components or controls are to be provided, so that the control of the end position damping occurs exclusively by the pressure conditions prevailing at the time when the damping begins. | 01-03-2013 |
| 20130037361 | PISTON ASSEMBLY OF SHOCK ABSORBER - Provided is a piston assembly of a shock absorber, which is simple in structure and is easy to fabricate. The piston assembly of the shock absorber includes: a piston body in which a piston rod reciprocating within a cylinder penetrates a central portion thereof, and a plurality of compression passages and a plurality of rebound passages alternately penetrating the piston body are formed around the piston rod; a compression retainer placed over the piston body, in which a plurality of connection holes corresponding to the compression passages penetrate the compression retainer; and a rebound retainer placed under the piston body, in which a plurality of connection holes corresponding to the rebound passages penetrate the rebound retainer. | 02-14-2013 |
| 20130248307 | TRACTION CONTROL VALVE FOR HYDRAULIC SHOCK ABSORBER - The present shock absorber has a pressure tube with a compression chamber and a traction chamber, separated by a piston provided with a traction passage. The valve includes: a counter pressure chamber loaded by piston, provided with an upper opening and a control base, open to the compression chamber, where a hollow sealing plug is displaceable between a closed position, hence communicating traction passage only with the counter pressure chamber, and open positions; a return spring driving sealing plug to its closed position; and an inertial seal, inside the counter pressure chamber and displaceable from inoperative position, away from the control base, to operative position, where it blocks said base, increasing hydraulic pressure in the counter pressure chamber to hydraulically drive sealing plug to its closed position when piston is subjected to a given upward acceleration. | 09-26-2013 |
| 20130341142 | ADJUSTABLE DAMPING VALVE ARRANGEMENT - An adjustable damping valve arrangement for a vibration damper comprises an actuator which exerts an actuating force on a multiple-part auxiliary valve body of an auxiliary valve. The auxiliary valve influences a closing force on a main stage valve via an auxiliary valve closing body which is movable axially relative to a shaft portion on the actuator side. During a lift movement, a main stage valve body of the main stage valve compresses a rear space connected to the control space via the auxiliary valve. An auxiliary valve closing spring acts upon the auxiliary valve closing body in closing direction independently from the actuator control, and the rear space has a flow-off channel having a damping valve which generates a damping force during a lift movement of the main stage valve body when the rear space is closed. | 12-26-2013 |
| 20140048366 | PISTON VALVE OF SHOCK ABSORBER - Provided is a piston valve of a shock absorber which can achieve both an effect of varying an attenuation force according to a pressure and an effect of varying an attenuation force according to a frequency region. The piston valve includes: a main valve unit coupled to a lower end of a piston rod formed with an orifice hole, to divide an inside of a cylinder into an extension chamber and a compression chamber, the main valve unit generating an attenuation force according to a difference of pressure between the extension chamber and the compression chamber; and a frequency sensitive valve unit installed at one side of the main valve unit and configured to generate an attenuation force according to a frequency of hydraulic fluid delivered through the orifice hole of the piston rod, wherein the frequency sensitive valve unit is installed within the main valve unit. | 02-20-2014 |
| 20140069755 | SUSPENSION SYSTEM - A suspension system includes a first suspension member movable relative to a second suspension member, a fluid reservoir having a volume, the volume variable in response to a relative movement between the first and second suspension members, and a fluid flow circuit having a first end in fluidic communication with the fluid reservoir and a second end in fluidic communication with an isolated suspension location, the fluid flow circuit comprising a first valve, a second valve and a third valve, wherein said first and third valves are in parallel with each other and the second valve is in series with each of the first and third valves. | 03-13-2014 |
| 20140076677 | VALVE STRUCTURE - A valve structure includes a valve disc partitioning an interior of a damper into a one-side chamber and an other-side chamber, a plurality of one-side ports and a plurality of other-side ports communicating between the one-side chamber and the other-side chamber, a one-side leaf valve opening and closing only the one-side ports, and an other-side leaf valve opening and closing only the other-side ports, the one-side ports and the other-side ports are alternately arranged in the valve disc along the circumferential direction, and a plurality of through holes formed in the valve disk is opened from the inner circumferential side of openings of all the other-side ports and communicates with the one-side ports. | 03-20-2014 |
| 20140262655 | PISTON ASSEMBLY WITH OPEN BLEED - A shock absorber includes a piston which has at least one compression fluid passage, at least one rebound fluid passage and at least one bleed fluid passage. A compression valve assembly closes the at least one compression passage and a rebound valve assembly closes the at least one rebound passage. A bleed valve assembly with the bleed fluid passage defines a first, always open flow path through the piston and a second flow path, separate from the first flow path, through the piston. A bleed disc is movable between a first position where the second flow path is open and a second position where the second flow path is closed. | 09-18-2014 |
| 20140291092 | SHOCK ABSORBER SYSTEM AND METHOD - In shock absorber system 10, solenoid 18 varies the damping force by changing the position of spring seat 24, and the effective preload force, at the same time. In the normal, de-energized condition (with no current), damping forces are generated by the piston valve | 10-02-2014 |
| 20150008083 | DAMPING VALVE FOR SHOCK ABSORBER - A damping valve includes a piston with a one-side disk and an other-side disk, a port configured to include through holes, a piston rod, and a nut. A plurality of the through holes of the other-side disk are formed along between the inner peripheral seat surface and the outer peripheral seat surface. Elastic deforming portions are formed between the through holes of the other-side disk. A clearance is formed between the inner peripheral seat surface of the one-side disk and that of the other-side disk in a state where the nut is not tightened and the outer peripheral seat surface of the one-side disk and that of the other-side disk are in contact. The elastic deforming portions of the other-side disk are strained and the respective inner peripheral seat surfaces come into contact in a state where the nut is tightened. | 01-08-2015 |
| 20150034437 | DAMPING VALVE FOR SHOCK ABSORBER - A damping valve includes a valve disk, a retainer, an inner peripheral side flow passage configured to include a valve disk through hole formed in an inner peripheral side of the valve disk and a retainer through hole formed in the retainer and allowing communication between one and other chambers, an outer peripheral side flow passage formed in an outer peripheral side of the valve disk and allowing communication between the one and the other chambers, and a leaf valve in the form of an annular plate arranged on a side of the retainer opposite to the valve disk and configured to openably close the inner peripheral side flow passage by an outer peripheral part. A flow passage area of the retainer through hole is not smaller than that of the valve disk through hole. | 02-05-2015 |
| 20150041269 | PISTON VALVE ASSEMBLY FOR SHOCK ABSORBER - In a piston valve assembly for a shock absorber, a main piston partitions a cylinder into an upper chamber and a lower chamber. Compression passages and rebound passages penetrate the main piston in a vertical direction. A first compression value forms a first compression chamber, and a top surface of a lower retainer is opened toward the upper chamber. Bypass passages are formed on an outer peripheral surface of the piston rod. A guide assembly surrounds an outer peripheral surface of the compression valve and the bottom surface of the compression valve, tightly contacts the bottom surface of the compression valve in a high-frequency section, and moves down toward the lower retainer in a low-frequency section. A lower disk assembly forms a second compression chamber in the lower retainer while covering the opened top surface of the lower retainer, communicates the second compression chamber with the lower chamber in the high-frequency section, and blocks the communication between the second compression chamber and the lower chamber in the low-frequency section due to the downward movement of the guide assembly. | 02-12-2015 |
| 20150114774 | PISTON VALVE ASSEMBLY FOR SHOCK ABSORBER - A piston valve assembly for a shock absorber is disclosed. In a high-frequency mode, a damping force control is achieved through an open passage that is always opened. In a low-frequency mode, a guide assembly moves downward due to an increase in a pressure of a first pressure chamber by a fluid moved through an inlet hole of the first pressure chamber. At this time, the guide assembly blocks the open passage and the damping force control is achieved through only a rebound passage. Consequently, it is possible to solve a fluid bottle neck through a passage formation. A disk is installed on the inlet hole to prevent a continuous increase in the pressure of the first pressure chamber, thereby effectively preventing the reduction of the damping force. | 04-30-2015 |
| 20150345584 | PISTON AND SHOCK ABSORBER INCLUDING PISTON - Provided on one plane of an annular piston are a sheet surface on which a leaf valve is seated and a supporting part constructed of a slope part and a flange part, and provided on the other plane is a leg part having a depression on an edge part. When two pistons are axially stacked, the sheet surface of one of the pistons is contained inside the depression of the other piston, and the sheet surface of the one piston is protected. | 12-03-2015 |
| 20150354655 | SHOCK ABSORBER - A shock absorber includes a valve disc defining two chambers, a flow passage formed in the valve disc, the flow passage allowing communication between the two chambers, and a plurality of leaf valves formed in the shape of annular plates, the plurality of leaf valves being stacked on the valve disc to openably close an outlet of the flow passage. The leaf valve disposed on the tail end of the plurality of leaf valves stacked on the valve disc includes a rib projecting in an axial direction from one flat surface and recessed on an opposite side. | 12-10-2015 |
| 20150354656 | SHOCK ABSORBER - A shock absorber includes a valve disc defining two chambers, a flow passage formed in the valve disc, the flow passage allowing communication between the two chambers, a window formed in the valve disc, the window being connected to the flow passage, a valve seat formed on the valve disc, the valve seat surrounding the outer periphery of the window; and a plurality of leaf valves formed in the shape of annular plates, the plurality of leaf valves being stacked on the valve disc. The first leaf valve stacked on the valve disc is provided such that an outer peripheral part is seatable on and separable from the valve seat, and includes a rib recessed on a valve disc side and projecting on an opposite valve disc side at a position facing the valve seat. | 12-10-2015 |
| 20160040741 | SUSPENSION SYSTEM - A suspension system includes a first suspension member movable relative to a second suspension member, a fluid reservoir having a volume, the volume variable in response to a relative movement between the first and second suspension members, and a fluid flow circuit having a first end in fluidic communication with the fluid reservoir and a second end in fluidic communication with an isolated suspension location, the fluid flow circuit comprising a first valve, a second valve and a third valve, wherein said first and third valves are in parallel with each other and the second valve is in series with each of the first and third valves. | 02-11-2016 |
| 20160091045 | CYLINDER WITH SHOCK ABSORBING FUNCTION - A cylinder with a shock absorbing function which can detect a position of a piston rod reciprocating in a cylinder tube and has a function of absorbing shock produced by the piston rod at its stroke end includes: a pair of piston valve sheets provided in a piston unit; a piston valve configured to reciprocate within a range between the piston valve sheets; a slider made of a nonmagnetic material slidably fitted onto the piston rod; a valve piston provided in the piston unit; a magnet holder ring attached to the piston rod so as to be positioned between the piston unit and the slider; and a magnetism detector provided on an outer periphery of the cylinder tube and configured to detect a position of the piston rod by detecting magnetism generated by the magnet. | 03-31-2016 |
| 20190145483 | SUSPENSION SYSTEM | 05-16-2019 |
