| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 188280000 | Relative speed of thrust member or fluid flow | 43 |
| 20080245630 | Fluid damper - A damper including a first fluid conduit in fluid communication with a second fluid conduit via a regulator, a first movable member disposed within the first fluid conduit, a second movable member disposed within the second fluid conduit, and a fluid residing between the first and second movable members. The regulator may include one or more orifices each having a valve disposed therein, wherein the valves are moveable between a seated position and an unseated position with respect to the orifices and are spring biased toward the unseated position. The damper may be spring biased such that when it is mounted on a stationary rail of a drawer slide, and engages with a movable rail of the drawer slide, it urges the drawer slide toward a closed position and dampens the closing motion of the drawer slide. | 10-09-2008 |
| 20090107781 | Vibration Damper Having a Rebound Buffer - A vibration damper for the wheel suspension of a motor vehicle includes a damping tube, a working piston which splits the interior of the damping tube into two working chambers and is attached to a piston rod, a closure assembly which closes an open end of the damping tube and through which the piston rod is guided, and a rebound buffer spring which is disposed between two spring plates. The rebound buffer spring is formed as a helical spring, wherein the ends of the rebound buffer spring are supported on support surfaces of the spring plates. The spring plates comprise support sleeves extending in the longitudinal direction of the vibration damper, and the outer peripheral surfaces of the support sleeves support the rebound buffer spring from the inside in the radial direction when the rebound buffer spring has reached its hard stop. The support sleeves do not touch when the compression coil spring is at its hard stop. | 04-30-2009 |
| 20100078275 | HIGH VELOCITY COMPRESSION DAMPING VALVE - A shock absorber includes a pressure sensitive valve assembly that controls fluid flow through the pressure sensitive valve assembly based upon the velocity of the piston assembly in the shock absorber. The pressure sensitive valve assembly restricts fluid flow as the velocity of the piston in a compression stroke increases to increase the damping loads provided by the shock absorber. | 04-01-2010 |
| 20100084234 | DUAL CONSTRAINT DISC VALVE SYSTEM FOR DAMPER - A valve assembly for a damper includes a piston with a central hole to receive a rod and at least one fluid passage spaced form the central hole. At least one deflecting disc is positioned on one side of the piston to at least partially overlap the fluid passage. The deflecting disc includes a center opening that is aligned with the central hole of the piston and is defined by an inner peripheral surface at the center opening. At least one translating disc is positioned in an overlapping relationship with the deflecting disc and is defined by an outer peripheral surface. A cage is positioned over the deflecting and translating discs and includes an abutment feature that constrains the translating disc at the outer peripheral surface while the inner peripheral surface of the deflecting disc is constrained at the rod. | 04-08-2010 |
| 20100084235 | Trashcan with hydraulic lid deceleration - A trashcan has a hydraulic drop-deceleration mechanism including a can body, a lid, and a connection pole for push-open connection. The lid is connected to the connection pole at a top connection pole end. The connection pole is connected to the foot pedal via a lever at a bottom connection pole end. A hydraulic mechanism is for drop-deceleration. The hydraulic mechanism is connected to the connection pole by a connector. The hydraulic mechanism has a chamber filled with hydraulic fluid. The hydraulic mechanism has a gliding rod moving within the chamber. The gliding rod forms a tip at a gliding rod lower end. The mechanism has upper and lower fluid storage chambers. A piston is slidingly mounted in the hydraulic mechanism is biased in a lid open position by a spring. | 04-08-2010 |
| 20100140031 | HYDRAULIC SHOCK ABSORBER - In the inside of a cylinder tube, there are provided a piston chamber and an adjusting chamber communicating each other, and these both chambers are filled with oil in a pressurized condition, and further, there are provided a piston moving in an axial direction in the piston chamber and a rod coupled to the piston. An elastic member is located in the inside of the adjusting chamber in a state that a reservoir tank is formed in the adjusting chamber by being compressed by pressurizing force of the oil, and impact is absorbed in such a way that the elastic member is caused to extend and contract by the oil flowing in/flowing out the reservoir tank by movement of the rod. | 06-10-2010 |
| 20100163355 | SHOCK ABSORBER - A valve main body where an opening of a passage is formed comprises a clamp seat portion adapted to clamp a disk valve, the opening, a non-annular first seat portion where the disk valve can be seated, and an annular second seat portion, which are formed in this order from the inner circumferential side. The first seat portion has an axial height equal to or higher than the axial height of the clamp seat portion and lower than the axial height of the second seat portion. | 07-01-2010 |
| 20100181154 | ADVANCED TRIPLE PISTON DAMPER - An advanced triple piston damper (ATPD), comprises of three pistons ( | 07-22-2010 |
| 20110186393 | SHOCK ABSORBER - A piston connected to a piston rod is fitted in a cylinder having a hydraulic oil sealed therein. Flows of hydraulic oil induced in extension and compression passages by sliding movement of the piston are controlled by extension and compression damping force generating mechanisms, respectively, to generate damping force. In the extension and compression damping force generating mechanisms, the hydraulic oil is introduced into back pressure chambers through back pressure introducing orifices, respectively, and the opening of relief valves is controlled by the pressures in the back pressure chambers, respectively. In a low piston speed region, damping valves open, which are provided downstream of the back pressure chambers, respectively, and as the piston speed increases, the relief valves open to suppress an excessive increase of damping force. After the relief valves have opened as a result of an increase in the piston speed, the relief valves are kept open at piston speeds not lower than the piston speed at which the relief valves open, thereby obtaining stable damping force. | 08-04-2011 |
| 20110214955 | SHOCK ABSORBER - A shock absorber includes a first passage and a second passage to which a working fluid flows out from one chamber in a cylinder by movement of a piston, a damping valve installed on the first passage and configured to regulate a flow of the working fluid caused by sliding of the piston to generate a damping force, a back pressure chamber applying an internal pressure to the damping valve in a closing direction of the damping valve, a back pressure chamber inflow oil passage introducing the working fluid from one chamber into the back pressure chamber, a pressure chamber provided in-between on the second passage, and a free piston installed in the pressure chamber so as to freely slide in the pressure chamber. | 09-08-2011 |
| 20110247906 | DAMPING MECHANISM - A damping mechanism ( | 10-13-2011 |
| 20110266105 | SHOCK ABSORBER - Provided is a shock absorber which facilitates an insertion/fixation operation. The shock absorber includes a spring-force application unit ( | 11-03-2011 |
| 20110297497 | IMPACT SENSITIVE DAMPER - Disclosed herein is an impact sensitive damper damping vibration transferred from a road surface to a vehicle, and more particularly, to an impact sensitive damper in which handling stability may be achieved in a low speed operating section of the damper and improvement of ride comfort may be achieved in a high speed operating section thereof. According to an exemplary embodiment of the present invention, there is provided an impact sensitive damper improving ride comfort by decreasing damping force when impact is applied to a vehicle, the impact sensitive damper including: a body valve body having compression channels and expansion channels formed therein; a fastener vertically penetrating through the body valve body; a dish shaped spring interposed between an upper portion of the body valve body and the fastener; and a disk shaped spring interposed between a lower portion of the body valve body and the fastener, wherein at the time of compression stroke when the impact is applied to the damper, the fastener is relatively displaced with respect to the body valve body due to elastic deformation of the dish shaped spring, such that the disk shaped spring and the lower portion of the body valve body are spaced apart from each other, thereby increasing a channel area of operating fluid. | 12-08-2011 |
| 20120055748 | Damper device - A damper device includes a cylinder body, and a piston body. At least one end of either the cylinder body or the piston body is linked to an object to be braked to brake a relative movement or a movement of the object to be braked. The cylinder body includes a blocking member made of a synthetic resin at a deep inner section opposing to the piston body. The blocking member is formed separately from the cylinder body, and installed in one end of a tubular-shaped body forming the cylinder body. The blocking member has a fluid passage section and a braking force variable member moved therein. The braking force variable member holds passage of a fluid passing through the fluid passage section at a time of a movement of the piston body in a direction leaving from the deep inner section. | 03-08-2012 |
| 20120090930 | Vehicle Damping Device for a Vehicle Seat / Vehicle Cabin - The invention concerns a vehicle damping device for a vehicle seat ( | 04-19-2012 |
| 20120199428 | Force-Controlling Hydraulic Device - A device for use in the control of mechanical forces is provided. The device includes first and second terminals for connection to components in a system for controlling mechanical forces and independently moveable. The device further comprises a hydraulic device connected between the terminals and containing a liquid. The hydraulic device is configured to produce upon relative movement of the terminals, a liquid flow to generate an inertial force due to the mass of the liquid to control the mechanical forces at the terminals such that they are substantially proportional to the relative acceleration between the terminals. | 08-09-2012 |
| 20120211317 | DAMPER DEVICE - A damper device includes a cylinder body and a piston body, and at least one of the cylinder body and the piston body is adapted to attach to an object to be damped for damping a movement or a relative movement of the object to be damped. A communication hole which communicates inside and outside of the cylinder body is formed in an inner back portion of the cylinder body. Also, a valve body is provided for reducing a flow volume of a fluid passing through the communication hole by moving from a standard position while elastically deforming at least one portion due to a pressure change caused by the movement or the relative movement of the piston body. | 08-23-2012 |
| 20120234639 | DAMPING DEVICE - A damping device comprises a piston that partitions an interior of a cylinder into first and second working chambers. A flow-rate-dependent damping force generating element connects the first and second working chambers. A first pressure chamber and a second pressure chamber divided by a free piston are formed integrally with the piston. A first connecting passage connects the first working chamber and the first pressure chamber, and a second connecting passage connects the second working chamber and the second pressure chamber. By providing a relief valve that allows fluid to flow from the first working chamber into the second working chamber, an increase in the generated damping force during a high speed operation of the piston can be suppressed, regardless of a vibration frequency of the piston. | 09-20-2012 |
| 20120292144 | 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. | 11-22-2012 |
| 20120292145 | 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. | 11-22-2012 |
| 20120292146 | 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. | 11-22-2012 |
| 20120292147 | 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. | 11-22-2012 |
| 20120312648 | VALVE STRUCTURE OF SHOCK ABSORBER HAVING VARIABLE FLOW CHANNEL - Disclosed herein is a valve structure of a shock absorber which forms flow channels in two directions of working fluid passing through the valve structure so as to slow change of damping force when the moving velocity of a piston is changed between a low velocity and a middle and high velocity and forms one of the two flow channels as a variable flow channel to improve ride comfort of a vehicle. The valve structure includes a piston valve assembly installed at the end of the piston rod and operated to generate damping force varied according to moving velocity of a working fluid, and a variable valve assembly moving together with the piston valve assembly to vary damping force to slow change of a damping force curve when the flow velocity of the working fluid is changed between a low velocity and a middle and high velocity. | 12-13-2012 |
| 20130020158 | VALVE STRUCTURE OF SHOCK ABSORBER - A valve structure includes a piston valve assembly, and a frequency unit including a hollow housing, a free piston and an auxiliary valve assembly. The piston valve assembly, installed at one end of a piston rod, operates with the inside of a cylinder being divided into upper and lower chambers, and generates a damping force varying according to a moving speed. The frequency unit moves together with the piston valve assembly and generates a damping force varying according to a frequency. The housing is mounted at a lower end of the piston rod such that the housing is disposed under the piston valve assembly. An inner space of the housing is partitioned into upper and lower spaces by the free piston. The free piston is disposed to be vertically movable within the housing. The auxiliary valve assembly is mounted at a lower end of the housing. | 01-24-2013 |
| 20130140117 | VALVE STRUCTURE OF SHOCK ABSORBER - Disclosed herein is a valve structure of a shock absorber which respectively controls damping force at a low amplitude and a high amplitude when a piston valve is compressed and expanded and thus simultaneously satisfies ride comfort and stability of a vehicle. The valve structure of the shock absorber which has a cylinder filled with a working fluid and a piston rod provided with one end located within the cylinder and the other end extending to the outside of the cylinder, includes a main piston valve assembly installed at the end of the piston rod and operated to generate damping force varied according to moving velocity under the condition that the inside of the cylinder is divided into an upper chamber and a lower chamber, and a sub piston valve assembly moving together with the main piston valve assembly to generate damping force varied according to frequency. | 06-06-2013 |
| 20140000997 | DAMPING VALVE | 01-02-2014 |
| 20140151170 | DAMPER DEVICE - A damper device includes a protruding portion located outside a closing portion of a cylinder body facing a piston body and forming a flow path communicating inside and outside of the cylinder body; a plug body including a shaft portion inserted into the flow path from an outside of the cylinder body; and an urging device of the plug body. An insertion length of the shaft portion of the plug-like body into the flow path against urging of the urging device increases by change in pressure due to a movement or a relative movement of the piston body in a direction separating from the closing portion of the cylinder body. | 06-05-2014 |
| 20140216870 | VARIABLE DAMPING FORCE DAMPER - A solenoid-type variable damping force damper prevents excessive opening of a valve plate when the damper operates at a high speed, thereby achieving reduced electric power consumption. A valve body of an expansion-side valve plate is opened by pressure of hydraulic oil flowing in from an expansion-side first communication oil passage, but at this time, the oil pressures on the side of the upper surface and on the side of the under surface of the valve body are substantially equal to each other within the expansion-side pressure accumulation chamber, owing partly to a flow of the hydraulic oil passing through flow rate adjustment holes. Therefore, even when the damper undergoes an expanding action at a high speed and the hydraulic oil flows in from the expansion-side first communication oil passage at a high inflow rate, the valve body of the expansion-side valve plate is less likely to open excessively. | 08-07-2014 |
| 20140318908 | HIGH VELOCITY COMPRESSION DAMPING VALVE - A shock absorber includes a pressure sensitive valve assembly that controls fluid flow through the pressure sensitive valve assembly based upon the velocity of the piston assembly in the shock absorber. The pressure sensitive valve assembly restricts fluid flow as the velocity of the piston in a compression stroke increases to increase the damping loads provided by the shock absorber. A secondary valve assembly controls fluid flow through the pressure sensitive valve assembly when the pressure sensitive valve assembly is in a closed position. | 10-30-2014 |
| 20140339030 | Hydraulic Damping Cartridge - Disclosed is a damping cartridge with a rebound stage damping unit and a compression stage damping unit as well as an compensating volume for a damping medium. According to the present invention the compression stage unit is made up of a three-way unit with a high-speed-, a mid-speed- and a low-speed flow path. Furthermore the compensating volume is made up of a tube bladder, which at least partially encompasses the compression stage unit. | 11-20-2014 |
| 20150021131 | FLUID DAMPER HAVING A DAMPING PROFILE FAVORABLE FOR ABSORBING THE FULL RANGE OF COMPRESSION FORCES, INCLUDING LOW- AND HIGH-SPEED COMPRESSION FORCES - A fluid damper is provided that has a compression damping profile that is favorable for damping the full range of compression forces, including low- and high-speed compression forces. While achieving this compression damping profile, the damper has a mode that does not require: (1) both low- and high-speed compression circuits; (2) the rider or a complicated control system to make adjustments to the compression circuit to achieve the different compression damping curves/profiles; and/or (3) the use of an inertia valve. The damping curve should be at least non-increasing and may be regressive across substantially the entire high-speed operating range of the damper. | 01-22-2015 |
| 20150034434 | DAMPING VALVE - In a damping valve having a partition that separates a first chamber and a second chamber, a valve seat that is formed on an end surface of the partition facing the first chamber or the second chamber; and a leaf valve whose outer-circumferential end portion is separably seated on the valve seat, the leaf valve has a plurality of orifices for allowing working fluid to flow therethrough in the outer-circumferential end portion, and the plurality of orifices are concentrated in an arbitrary region along a circumferential direction in the outer-circumferential end portion of the leaf valve. | 02-05-2015 |
| 20150144444 | SHOCK ABSORBER - A shock absorber includes: a main piston which is mounted on a piston rod reciprocating within a cylinder, slidingly reciprocates within the cylinder while contacting an inner periphery of the cylinder, and partitions the cylinder into upper and lower chambers; a communication passage which is formed in the piston rod to communicate the upper chamber with the lower chamber, and penetrates from an upper side of the main piston to a lower side of the piston rod; a housing which is mounted on a lower end of the piston rod to form an internal space, a communication hole connected to the lower chamber being formed in a bottom surface of the housing. | 05-28-2015 |
| 20150323036 | SHOCK ABSORBER - A shock absorber includes: a communication passage configured to cause a working fluid chamber formed in a cylinder to communicate with a reservoir for reserving a working fluid therein; a damping force generating mechanism configured to apply resistance to the working fluid passing through the communication passage; a low-speed compression-side damping adjuster configured to change a damping force when a stroke speed is in a low-speed range during compression; a high-speed compression-side damping adjuster configured to change the damping force when the stroke speed is in a high-speed range, the high-speed range representing higher speed than the low-speed range during compression; and an extension-side damping adjuster configured to change the damping force during extension. The low-speed compression-side damping adjuster, the high-speed compression-side damping adjuster, and the extension-side damping adjuster are attached to a tank side of the cylinder. | 11-12-2015 |
| 20150354659 | SHOCK ABSORBER SYSTEM - A shock absorber system, including: a hydraulic shock absorber configured to generate a damping force with respect to a relative movement of a sprung portion and an unsprung portion; a damping-force changer configured to change the damping force; and a controller configured to determine a damping-force index and to control the damping-force changer, wherein the controller is configured to determine, as the index, a required application force to be applied to the sprung portion for damping its movement in an up-down direction, according to a determination rule in which the required application force has the same direction as a direction of a speed of the sprung portion in the up-down direction when the sprung speed is relatively small and acceleration of the sprung portion in the up-down direction is relatively large in a situation in which the direction of the speed and a direction of the acceleration are mutually different. | 12-10-2015 |
| 20150354660 | SHOCK ABSORBER - A shock absorber includes a damping passage that connects an expanding-side chamber with a contracting-side chamber inside a cylinder, a housing that forms a pressurizing chamber, a free piston that partitions the pressurizing chamber into an expanding-side pressurizing chamber and a contracting-side pressurizing chamber, an expanding-side passage that connects the expanding-side chamber with the expanding-side pressurizing chamber, a contracting-side passage that connects the contracting-side chamber with the contracting-side pressurizing chamber, a spring element configured to suppress displacement of the free piston, a cushion configured to collide with the free piston to suppress displacement of the free piston thereover when the free piston is displaced from the neutral position with respect to the housing by a predetermined displacement amount or more; and a cushion fixing member fixed to the housing, the cushion fixing member holding the cushion. | 12-10-2015 |
| 20150362038 | DAMPING FORCE CONTROLLING SHOCK ABSORBER - A damping force controlling shock absorber can generate a hard damping force through disk slits during a low speed operation by adding a disk valve to a chamber, can constantly maintain a pressure of a back pressure compartment by opening a disk valve and discharge the pressure of the back pressure compartment to the outside when the pressure of the back pressure compartment is at a predetermined level or more, thereby generating a harder damping force during a low speed operation, and can adjust a disk valve open pressure during a medium/high speed operation so as to prevent the durability of the equipment from being lowered by an excessive increase of a pressure and prevent an abnormal operation from occurring. | 12-17-2015 |
| 20160040740 | SHOCK DAMPER - A shock damper is disclosed. The shock damper may have a variable shear control apparatus through which a shear-thickening fluid may flow. In this manner, the shock damper may compress at different rates for different applied impulse forces, in response to the changing viscosity of the shear-thickening fluid. | 02-11-2016 |
| 20160047432 | SHOCK ABSORBER WITH FREQUENCY DEPENDENT PASSIVE VALVE - A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. The piston assembly includes a frequency dependent valve assembly attached to the piston rod which defines a housing attached to the piston rod and a spool valve assembly. The spool valve assembly includes a spool valve and a bypass valve assembly that controls fluid flow through bypass passage that bypasses the piston assembly. | 02-18-2016 |
| 20160159184 | SHOCK ABSORBERS - A shock absorber system can includes a shock tube and a piston slidably mated to an end of the shock tube. The system can include a first mount on the piston for attaching to a first point on a motor vehicle. A second mount can be positioned on the shock tube near an end of the shock tube opposite the piston. The second mount can be positioned offset from an axial centerline of the shock tube. In some cases, the system can include a stabilizing device connected to the second mount. The system can include a heat sink reservoir. The heat sink reservoir can be connected to the shock tube via a valved fluid connection. | 06-09-2016 |
| 20160166410 | HYDRAULIC DAMPING CYLINDER, IN PARTICULAR FOR A KNEE PROSTHESIS | 06-16-2016 |
| 20160201752 | DAMPING FORCE VARIABLE TYPE SHOCK ABSORBER | 07-14-2016 |
| 20160375951 | COMPRESSION PISTON - A compression damper of a shock absorber includes: a single adjustable fluid circuit configured for controlling a damping rate associated with multiple compression speeds of the shock absorber, wherein the single adjustable fluid circuit includes a fluid passageway through a base valve; and a positionally adjustable floating shim stack positioned at one end of the fluid passageway, the positionally adjustable floating shim stack configured for selectively blocking a flow of fluid through the fluid passageway. | 12-29-2016 |
