Class / Patent application number | Description | Number of patent applications / Date published |
188266100 | Motion damped from condition (e.g., bump, speed change) detected outside of retarder | 62 |
20090266656 | HYDRAULIC SHOCK ABSORBER - There is provided a hydraulic shock absorber in which fall prevention means, which is moored at a mooring portion provided to a spring receiver (spring receiver base portion) having been previously assembled to the axle bracket and prevents the fall of the spring receiver (spring receiver base portion), is provided at the axle bracket in an assembled state in which upper and lower ends of an axle-side tube are vertically inverted and an axle bracket is assembled to a lower end of the axle-side tube from above. | 10-29-2009 |
20090266657 | HYDRAULIC SHOCK ABSORBER - There is provided a hydraulic shock absorber including a spring receiver that is supported so as to be not rotatable with respect to the axle bracket. The spring receiver is divided into a spring receiver base portion that has an outer diameter smaller than an inner periphery of an axle-side tube, and a spring receiver cylindrical portion that is inserted into an inner periphery of the axle-side tube and a suspension spring is seated thereon. A lower end engagement portion provided at a lower end of the spring receiver cylindrical portion is seated on an upper end engagement portion provided at an upper end of the spring receiver base portion, so that the spring receiver cylindrical portion is concentrically set to the axle-side tube. | 10-29-2009 |
20100170759 | ENERGY ADSORBER DEVICE THAT ADAPTS AUTOMATICALLY TO THE WEIGHT IT SUPPORTS - The present invention relates to an energy absorber device ( | 07-08-2010 |
20120186920 | ELECTRICAL SHOCK ABSORBER - An electrical shock absorber | 07-26-2012 |
20120247888 | SUSPENSION APPARATUS - Shock absorbers of left and right front wheel suspensions and shock absorbers of left and right rear wheel suspensions each are constituted by a damping force adjustable hydraulic shock absorber provided with a frequency response unit. An actuator of a damping force variable mechanism provided to the shock absorber is driven and controlled by a controller. The controller variably adjusts the damping force between the soft side and the hard side by the damping force variable mechanism according to a vertical vibration when a vehicle body vertically vibrates at a low frequency. The controller does not adjust the damping force when the vehicle body vibrates at a higher frequency than the low frequency. | 10-04-2012 |
20150075928 | SYSTEMS AND METHODS FOR PROVIDING DOCTOR BLADE HOLDERS WITH VIBRATION MITIGATION - A self-compensating tube assembly is disclosed for use in a doctor blade holder. The self-compensating tube assembly includes a tube including a membrane that encloses a liquid with a substantially invariable bulk modulus of elasticity, density and viscosity; and chatter responsive for providing any of monitoring means of blade chatter through pressure, damping of blade chatter, and minimizing blade chatter. | 03-19-2015 |
20150316118 | DAMPING VALVE FOR A SHOCK ABSORBER - The present invention relates to a damping valve for a shock absorber, comprising a base body with a first support body and with a second support body and comprising one or more valve spring discs which separate a first damping fluid space from a second damping fluid space, wherein the valve spring discs are supported against the first support body via an inner edge support, and against the second support body via an outer edge support, and which control a passage of damping fluid in both directions by virtue of the fact that the valve spring discs lift-off either from the inner edge support or from the outer edge support, by elastic deflection. According to the invention, a stroke movable control body is provided which is prestressed against the valve spring discs, so that the control behaviour of the valve spring discs can be adjusted via the edge supports by the prestress of the control body. | 11-05-2015 |
20160001625 | ROTARY DAMPER FOR A VEHICLE - A rotary damper for a vehicle, for damping relative movements between vehicle wheels and the vehicle body. The damper has at least one gear assembly that converts the relative movement into rotation movement and is connected to at least one electric machine ( | 01-07-2016 |
20160052361 | TUBE AND SHOCK ABSORBER - A tube having sealing ring grooves formed by a sequential rotational process and a shock absorber including the tube, in which durability of a sealing ring fitted in each of the sealing ring grooves is enhanced. An inclination angle (θ | 02-25-2016 |
188266200 | Condition actuates valve or regulator | 53 |
20080210505 | Method for Damping Relative Movements Occurring in a Work Vehicle During Advance - A method for damping relative movements occurring between a first and a second part of a work vehicle during advance of the vehicle, which parts are interconnected by means of at least one hydraulic actuator, includes detecting at least one operation parameter of the vehicle, determining whether a damping condition is present based on the detected operation parameter and if the determined damping condition is present, controlling a displacement of a variable displacement hydraulic motor arranged downstream of the actuator in such a way that energy from a hydraulic fluid transmitted from the actuator is converted to a rotational energy in the motor, and transmitting the recovered energy from the motor to a power source. | 09-04-2008 |
20090084643 | SHOCK ABSORBER - A shock absorber comprises first and second axially aligned cylinders ( | 04-02-2009 |
20090145706 | ARRANGEMENT FOR TELESCOPIC FORK LEG WITH PARALLEL DAMPING - A device for telescopic fork legs, preferably for a motorcycle or bicycle. The device is a compact removable unit that comprises parallel medium flow passages that run between upper and lower sides of the piston. This unit that is simple to adapt to different front fork dimensions and to use as a kit for providing an existing front fork with parallel damping. Parallel damping achieves simple adaptation of the damping characteristics to different types of terrain. | 06-11-2009 |
20100163354 | DAMPER - The invention relates to a damper with a damper cylinder, in which a piston ram is guided via a piston rod. The flow rate of a damper fluid is adjustable for setting damper characteristic values. According to the invention, a control mechanism is arranged inside the damper cylinder, which has two independent control loops for a rebound stage period and a compression stage period. The control mechanism controls the flow rate of the damper fluid in a first flow direction with a first adjustment element during the compression stage period, and controls the flow rate of the damper fluid in a second flow direction with a second adjustment element during the rebound stage period. | 07-01-2010 |
20100276238 | DEVICE FOR CONTROLLING A HYDRAULIC SUSPENSION SHOCK-ABSORBING DEVICE - The invention relates to a device for controlling a suspension hydraulic shock-absorbing device ( | 11-04-2010 |
20110127127 | SUSPENSION CONTROL APPARATUS FOR VEHICLE AND CONTROL APPARATUS FOR DAMPING-FORCE ADJUSTABLE SHOCK ABSORBER - Provided is a suspension control apparatus for a vehicle comprising a damping-force adjustable shock absorber interposed between a vehicle body and a wheel of a vehicle, and a controller for variably controlling damping-force characteristics of the damping-force adjustable shock absorber between hard and soft, wherein the controller is configured to switch the damping-force characteristics to a soft side when a direction of a stroke of the damping-force adjustable shock absorber is reversed between an extension stroke and a contraction stroke. | 06-02-2011 |
20120018263 | SUSPENSION DAMPER WITH REMOTELY-OPERABLE VALVE - A vehicle damper comprising a cylinder and a piston; a working fluid within the cylinder; a reservoir in fluid communication with the working fluid to receive working fluid from the cylinder in a compression stroke; and a remotely-operable valve, the valve operable to permit and restrict flow of the working fluid between the cylinder and the reservoir. | 01-26-2012 |
20120055745 | Method for Chassis Control of a Motor Vehicle, and Device for the Performance Thereof - In a method for chassis control of a motor vehicle which has at least one wheel suspension, a vehicle body, and a shock absorber having a rebound stage, whose stiffness is adjustable, and a compression stage, whose stiffness is adjustable, the stiffness of the compression stage is changed for a compressive load of the shock absorber generated by a specific vehicle body movement, and the stiffness of the rebound stage is additionally changed for a subsequently following tensile load of the shock absorber generated by the specific vehicle body movement, or the stiffness of the rebound stage is changed for a tensile load of the shock absorber generated by a specific vehicle body movement, and the stiffness of the compression stage is additionally changed for a subsequently following compressive load of the shock absorber generated by the specific vehicle body movement. | 03-08-2012 |
20120073918 | SHOCK ABSORBER - A piston with a piston rod coupled thereto is inserted in a cylinder, which sealingly contains oil. An oil flow generated by movement of the piston is controlled by a damping force generation mechanism, thereby generating a damping force. A separator tube is disposed around the cylinder, and the oil is transmitted to the damping force generation mechanism through a branch tube integrally formed on a cylindrical sidewall of the separator tube. The branch tube is tapered at the outer circumferential portion thereof with the outer diameter thereof reducing toward the distal end of the branch tube. | 03-29-2012 |
20120152670 | Damping Device - A damping device for a motor vehicle is particularly suited for damping starting and stopping impacts of a motor vehicle engine. The device has first and second chambers filled with a damping medium and separated by an intermediate plate. The chambers are each bounded by a bellows and by a face plate. A damping channel connecting the chambers is formed in the intermediate plate. In order to achieve a damping effect depending on the operating mode of the motor vehicle engine, the two chambers are connected by at least one bypass channel, which can be selectively opened or closed by way of a switchable valve. The switched state of the valve depends on the operating mode of the motor vehicle. There is also described a damping system for damping the starting and stopping impacts of a motor vehicle engine. | 06-21-2012 |
20120279815 | SHOCK ABSORBER - A shock absorber includes a hydraulic cylinder, a reservoir tank, and a damping force adjusting device. The damping force adjusting device includes a valve body, a oil chamber, a solenoid coil, a plunger and an oil path constitution member. The oil path constitution member includes an oil path and an oil path for hydraulic fluid that flows out of the hydraulic cylinder. The plunger moves in an axial direction based on a magnetic field generated by the solenoid coil. The valve body moves closer to or away from the oil path inside the oil path in association with the plunger. The oil chamber and the oil path communicate with each other via a communication path of the valve body. | 11-08-2012 |
20120305347 | SHOCK ABSORBER AND SUSPENSION APPARATUS - A shock absorber includes: at least one cylinder apparatus including a cylinder sealingly containing operating fluid, a piston slidably fittedly inserted in the cylinder to divide an interior of the cylinder into two chambers, and a piston rod coupled to the piston and extending to an outside of the cylinder; and at least one damping force generation mechanism connected to the cylinder apparatus, and capable of generating a damping force to be applied to a flow of the operating fluid caused by a movement of the piston and adjusting the damping force from the outside. The damping force generation mechanism includes a damping valve for generating the damping force, a pilot chamber for applying a pilot pressure by the operating fluid to the damping valve, and a pump for at least supplying or discharging the operating fluid to or from the pilot chamber. | 12-06-2012 |
20120305348 | SUSPENSION APPARATUS - Provided is a suspension apparatus capable of preventing excessive increase in damping force due to a sudden input from the road surface when the damping force is adjusted to a minimum value during running. A damping force control type hydraulic shock absorber ( | 12-06-2012 |
20130087421 | Hydraulic Suspension System for Work Vehicle - The hydraulic suspension system comprises a suspension mechanism ( | 04-11-2013 |
20130206521 | VARIABLE DAMPING FORCE DAMPER - A first hydraulic fluid passage includes an annular fluid passage, an inlet hole and a notch of a magnetic passage forming ring, another notch and a communication hole of a non-magnetic passage forming ring, an outlet hole and a discharge hole of a valve plate, another discharge hole of a valve plate retainer, and a first fluid passage of a one-way valve retainer. On the other hand, a second hydraulic fluid passage includes a second fluid passage of the one-way valve retainer, and the annular fluid passage. | 08-15-2013 |
20130228404 | SUSPENSION DAMPER WITH BY-PASS VALVES - A vehicle damper is described. The vehicle damper includes: a cylinder; a piston within the cylinder; a working fluid within the cylinder; a reservoir in fluid communication with the cylinder via the working fluid, the reservoir operable to receive the working fluid from the cylinder in a compression stroke; a valve in a flow path between the cylinder and the reservoir; and a remotely-operable valve having a position allowing the working fluid to significantly by-pass the valve. | 09-05-2013 |
20130248306 | VIBRATION CONTROL DEVICE FOR RAILROAD VEHICLE - A vibration control device for railroad vehicle includes an actuator with a cylinder coupled to a truck of a railroad vehicle, a piston, a rod coupled to the piston and a vehicle body, a rod-side chamber and a piston-side chamber in the cylinder, a tank, a first on-off valve disposed at an intermediate position of a first passage communicating between the rod-side chamber and the piston-side chamber, a second on-off valve disposed at an intermediate position of a second passage communicating between the piston-side chamber and the tank, and a pump for supplying fluid to the rod-side chamber. A warm-up operation of the actuator is performed by opening the first and second on-off valves and driving the pump after the vibration control device is started and before a transition is made to a normal control mode for suppressing the vibration of the vehicle body. | 09-26-2013 |
20130292218 | METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER - A system for controlling vehicle motion is described. The system includes: a first set of sensors coupled with a vehicle, the first set of sensors configured for sensing the vehicle motion; and a vehicle suspension damper coupled with the first set of sensors, the vehicle suspension damper configured for adjusting a damping force therein, the vehicle suspension damper comprising: a primary valve; a pilot valve assembly coupled with the primary valve, the pilot valve assembly configured for metering a flow of fluid to the primary valve, in response to at least the sensing; and an orifice block coupled with the primary valve and comprising a control orifice there through, the control orifice configured for operating cooperatively with the pilot valve assembly in the metering the flow of fluid to the primary valve. | 11-07-2013 |
20140116825 | Continuously Variable Damper Device - The present invention is related to a damper device ( | 05-01-2014 |
20140116826 | RAILCAR DAMPING DEVICE - A railcar damping device includes: a tank storing a liquid; a first opening/closing valve provided in a first passage connecting a rod side chamber to a piston side chamber, which are defined by a piston, to be capable of opening and closing the first passage; a second opening/closing valve provided in a second passage connecting the piston side chamber to the tank to be capable of opening and closing the second passage; a pump that supplies the liquid from the tank to the rod side chamber; a motor that rotates at a fixed rotation speed in order to drive the pump to rotate; and a section determination unit that determines whether a section type of a current travel section of the railcar is an open section or a tunnel section on the basis of a speed deviation between a target rotation speed and an actual rotation speed of the motor. | 05-01-2014 |
20140190778 | INERTING DAMPER WITH REGRESSIVE CHARACTERISTICS - Apparatus and methods for damping a vehicle suspension. Various embodiments of dampers in hydraulic flowpaths are adapted and configured to provide shock absorber reactive forces resulting more from the pressure drop needed to overcome the inertia of the hydraulic fluid. Further, various embodiments include valving that provides a regressive characteristic to the shock absorber reactive load characteristics. | 07-10-2014 |
20140196995 | RESETTING SEMI-PASSIVE STIFFNESS DAMPER AND METHODS OF USE THEREOF - A resetting semi-passive stiffness damper (RSPSD) for use in damping movement. Embodiments of such a RSPSD include, for example, a pistoned cylinder connected to a grooved rack, and a spring-loaded lever arranged between the rack and a slotted channel above the rack. One end of the lever is allowed to move pivotably and vertically within the channel as the other end moves with the rack. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the rack forces the lever further into the slotted channel where it eventually triggers the sensor, which then sends a signal to open the bypass valve. As the rack continues to move, the lever eventually reverses direction, and is forced back down the slotted channel by a return spring. Upon leaving the sensing range of the sensor, the valve is signaled to close. | 07-17-2014 |
20140196996 | BOOM SPRAYER AND BOOM VIBRATION CONTROL DEVICE - A boom vibration control device that is configured to suppress vibration of a boom that is cantilever-supported on a working vehicle includes a left-roll-direction biasing unit that biases the boom in the left roll direction with respective to the working vehicle and right-roll-direction biasing unit that biases the boom in the right roll direction with respective to the working vehicle. The boom is held at the roll angle at which the biasing force of the left-roll-direction biasing unit and the biasing force of the right-roll-direction biasing unit are balanced. | 07-17-2014 |
20140367211 | Energy Absorbing System for Safeguarding Structures from Disruptive Forces - The invention is a system and method for automatically adjusting the resonance frequency of an energy absorbing device in response to a disruptive force. By configuring an energy absorbing device for automatic response tuning, utilizing a controller coupled to one or more sensors for processing a determination primarily based on sensing data, the natural period of an overall structure may be adjusted (i.e. increased or decreased) so that the acceleration response of the structure is decreased upon being subjected to a disruptive force, for example, high winds, a blast from an explosion, or a seismic force caused by an earthquake. | 12-18-2014 |
20160031285 | MULTI-PATH FLUID DIVERTER VALVE - A multi-path fluid flow control valve for a shock absorber that restricts fluid into a first path while opening fluid flow to a second path when a given fluid flow velocity is reached. Exemplary configurations of this diverter valve are disclosed such as a spring loaded disc valve with face sealing lands, and a spool valve with diametric sealing lands. Applications include active suspension dampers in order to limit maximum RPM into a hydraulic motor. For such a system, in one mode the diverter valve allows fluid to move unrestricted into the hydraulic motor. When fluid velocity reaches a tunable set point, in a second mode the diverter valve restricts flow into the hydraulic motor and bypasses it shuttling fluid into the opposite side of the damper. In some cases progressive damping valves are utilized in series or parallel to smooth damping characteristics during, before, and after transitions. | 02-04-2016 |
20160059663 | SHOCK ABSORBER - A shock absorber includes a suction passage allowing flow only from a reservoir towards a pressure side chamber, a rectifying passage allowing flow only from the pressure side chamber towards an expansion side chamber, and a damping force variable valve allowing flow only from the expansion side chamber towards the reservoir. Large, and small and outer peripheral chambers in a bottom housing sandwich a free piston. The small chamber communicates the outer peripheral chamber with the expansion side chamber. The large chamber communicates with the pressure side chamber through first and second valves. During a contraction in which a piston moves downward, even in a uniflow-type shock absorber in which pressure in the expansion side chamber and the pressure side chamber become equal, the free piston can move downward due to a difference in pressure-receiving areas. Even if a stretching speed reaches a high range, the first and second valves are opened, and damping force is reduced. | 03-03-2016 |
20160089950 | HYDRAULIC SHOCK ABSORBER - A hydraulic shock absorber includes a damping force generator configured to, when a current is supplied, generate a current-dependent damping force as a damping force relating to a magnitude of the current supplied and configured to, when no current is supplied, generate a current-non-supply-state set damping force as a damping force with a preset magnitude. This hydraulic shock absorber is configured to inhibit a supply of the current to the damping force generator when the current to be supplied to the damping force generator is greater than a threshold value. When a current to be received by the damping force generator is to increase to a value larger than the threshold value, the supply of the current to the damping force generator is inhibited, and the current-non-supply-state set damping force is generated, making it possible to reliably achieve a damping capacity while reducing power consumption. | 03-31-2016 |
20160090146 | SHOCK ABSORBER - A shock absorber includes: a valve body; a valve seat; an actuator; and a fail-safe valve that is urged by a first elastic body. When fluid does not flow, the fail-safe valve is urged by the first elastic body to come into contact with the valve body and close a channel. When the fluid flows, the fail-safe valve is spaced from the valve body by a fluid pressure to open the channel. When the valve body moves most in a valve opening direction, the fail-safe valve is brought into contact with the valve body and the channel is closed, and a supporting portion supports a part of the fail-safe valve. When the fluid flows in this state, at least a part of the fail-safe valve, which is in contact with a non-supporting portion, is spaced from the valve body by the fluid pressure to open the channel. | 03-31-2016 |
20160121683 | ELECTRIC POWER GENERATING APPARATUS USING SUSPENSION DEVICE - In an electric power generating apparatus using a suspension device according to an embodiment of the present invention, provided is a valve structure for partially disconnecting a suspension device (or a damper) from an energy recovery device (or a turbine unit) when a vehicle is driving on an under-construction road or an unpaved road from which a large bump is expected. | 05-05-2016 |
188266300 | Of the rotary type | 4 |
20160153515 | Valve Assembly For Bicycle Suspension System | 06-02-2016 |
20160201753 | PRESSURE SHOCK ABSORBER | 07-14-2016 |
188266400 | Having plural openings | 2 |
20090071772 | SENSOR MODULE COMPRISING ACCELERATION SENSOR AND RELATIVE DISPLACEMENT SENSOR, DAMPER AND ELECTRONICALLY CONTROLLABLE SUSPENSION SYSTEM COMPRISING THE SAME, AND METHOD OF CONTROLLING VEHICLE MOVEMENT USING THE SAME - The present invention relates to a sensor module comprising a relative displacement sensor and an acceleration sensor, and a damper equipped with the same. The damper comprises a cylinder which is formed with a hollow portion therein; a piston rod which is inserted through an upper portion of the cylinder; a piston valve which is connected with an end of the piston rod so as to reciprocate in the cylinder, and which is formed with a fluid passing hole formed to be passed through the piston valve up and down; a rod guide which air-tightly closes an upper end of the cylinder and has a though-hole in which the piston rod is inserted; and a sensor module which is provided with an acceleration sensor for detecting an acceleration at least in a z-axial direction and a displacement sensor for detecting a displacement of the piston rod and which is coupled with the rod guide. | 03-19-2009 |
20090200125 | Arrangement, device and method at a disturbance-eliminating valve for damper - An electronically-controlled damper arrangement includes a valve assembly. The valve assembly features a valve slide that carries at least two pistons. The first piston controls flow through two separate flow paths while the second piston controls damping provided by the valve slide. The first piston being both axially moveable and radially moveable within a valve housing. | 08-13-2009 |
188266500 | Of the pulsating or reciprocating type | 20 |
20090026029 | Damping Force Generating Mechanism for Hydraulic Shock Absorber - A hydraulic shock absorber comprises a piston | 01-29-2009 |
20090038897 | Shock absorber - A shock absorber includes a piston coupled to a hollow piston rod fitted in a cylinder and a reservoir disposed at an outer periphery portion of the cylinder. A rod chamber in the piston rod communicates with a piston chamber in the piston via a radial passage. A hollow rod fixed to a partition wall member is inserted into the piston rod and the rod chamber is connected to the reservoir by the hollow rod. An extension-side disk valve generates damping force during an extension stroke of the piston rod and a compression-side disk valve generates damping force during a compression stroke. Because the hollow rod connects the rod chamber to the reservoir at the outer periphery of the cylinder, it is possible to secure sufficient reservoir capacity. | 02-12-2009 |
20090045022 | Damping system - The invention relates to a damping system, in particular in the form of a hydraulic cabin spring system, having at least one hydraulically triggerable actuating part ( | 02-19-2009 |
20090127039 | Vibration Damper - Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston ( | 05-21-2009 |
20090242339 | Damping force adjustable shock absorber - An object of the present invention is to provide a damping force adjustable hydraulic shock absorber, in which response delay of a pressure control valve and self-excited vibration of a valve body can be prevented. A damping force is generated by controlling an oil flow between an annular oil passage | 10-01-2009 |
20090277732 | BICYCLE DAMPER - A damper for a bicycle having, in one arrangement, a primary unit and a remote unit. The primary unit includes a damper tube, a spring chamber, and a piston rod that supports a main piston. The main piston is movable within the damper chamber of the primary unit. The main piston and the damper tube at least partially define a compression chamber. The remote unit comprises a remote fluid chamber and an inertial valve within the remote unit. The inertial valve is preferably responsive to terrain-induced forces and preferably not responsive to rider-induced forces when the shock absorber is assembled to the bicycle. A fluid flow control arrangement within the remote unit utilizes compression fluid flow to delay closing of the inertia valve after acceleration forces acting on the inertia valve diminish. In some arrangements, the inertia valve and fluid flow control arrangement may reside in the primary unit. | 11-12-2009 |
20100044172 | DAMPING FORCE VARIABLE VALVE OF SHOCK ABSORBER - A damping force variable valve includes a retainer including a main body connected at a central region thereof to a high pressure region of a shock absorber cylinder, the main body having an outer diameter increased outwards, and a spool rod formed integrally with the main body to extend from the central region, the spool rod having a hollow portion formed at a central portion thereof to allow a spool to be inserted in the hollow portion, a solenoid coupled to a lower side of the retainer, and a spool pressurizing installed in the solenoid and configured to move in response to electrical power applied to the solenoid to pressurize the spool. | 02-25-2010 |
20110079475 | DAMPER WITH DIGITAL VALVE - A shock absorber has a compression valve assembly that provides a high damping load during a compression stroke and an extension valve assembly that provides a high damping load during an extension stroke. One or more digital valve assemblies is positioned to work in parallel with the compression valve assembly and the extension valve assembly to provide a lower damping load. The lowering of the damping load is based upon the cross sectional area of flow passages provided by the one or more digital valve assemblies. | 04-07-2011 |
20120160620 | DAMPING FORCE CONTROL TYPE SHOCK ABSORBER - Oil grooves of a shutter and oil holes of a stepped rod constitute first orifices as variable orifices whose opening areas are variable according to the rotational position of the shutter. The oil grooves of the shutter and oil holes of the stepped rod constitute third orifices as variable orifices. Cut portions of inner disk valves constitute second orifices. The opening areas of the variable orifices are changed by rotating the shutter, thereby controlling damping force characteristics in a low piston speed region and the relief pressures of pressure control valves independently of each other, and thus increasing the degree of freedom for adjusting the damping force characteristics. | 06-28-2012 |
20160025180 | SHOCK ABSORBER - A shock absorber includes expanding-side and contracting-side chambers formed in a cylinder, a housing that forms a pressurizing chamber, a free piston that partitions the pressurizing chamber into an expansive pressurizing chamber communicating with the expanding-side chamber and a contractive pressurizing chamber communicating with the contracting-side chamber, and expanding-side and contracting-side springs that exert biasing forces for suppressing the free piston from being displaced from a neutral position. The contracting-side spring has a non-linear characteristic by which the spring constant increases as it is compressed. | 01-28-2016 |
188266600 | Side mounted | 10 |
20080251331 | Shock absorber having a continuously variable valve with base line valving - A shock absorber includes an external control valve which controls the damping characteristics of the shock absorber. The external control valve controls the flow of fluid between the lower working chamber of the shock absorber and the reservoir chamber and between the upper working chamber of the shock absorber. The damping characteristics are dependent on the amount of current being applied to a solenoid valve which controls a fluid valve assembly. A soft fluid valve assembly is disposed in series with the fluid valve assembly to allow for the tuning of the damping forces at low current levels provided to the solenoid valve. | 10-16-2008 |
20090084644 | Hydraulic Shock Absorber - In a hydraulic shock absorber structured such that a vehicle body side tube and an axle side tube are slidably fitted, and a plurality of adjusting portions are provided in a cap sealed to an upper end opening portion of the vehicle body side tube, a plurality of adjusting portions are arranged side by side in a plan view of the cap. | 04-02-2009 |
20090084645 | Damper device - A damper device includes a cylinder body and a piston body. At least one of the cylinder body and the piston body is attached to an article subject to damping so that the damping is applied to a movement or a relative movement of the article subject to the damping. The damper device has a run-through hole formed in an inner recess part of the cylinder body facing the piston body, and a stopper body having a shaft part, which is inserted into the run-through hole. A dimension of insertion of the shaft part of the stopper body into the run-through hole changes by a change of pressure caused by a movement of the piston body. | 04-02-2009 |
20090101459 | HYDRAULIC SHOCK ABSORBER - In a shock absorber of a vehicle, when a moving speed of a piston rod in relation to a cylinder tube is slow and first and second input forces are externally applied to the shock absorber, damping forces of pressure side and extension side first damping force generating devices are larger than that of pressure side and extension side second damping force generating devices. On the other hand, when the moving speed is fast, the damping forces of the pressure side and the extension side second damping force generating devices are larger than that of the pressure side and the extension side first damping force generating devices. A gas enclosure chamber filled with gas is connected to a first chamber through a free piston. | 04-23-2009 |
20090211859 | SOLENOID VALVE ASSEMBLY OF SHOCK ABSORBER - Disclosed is a solenoid valve assembly of a shock absorber wherein a plug the position of which is threadedly adjusted is prevented from escaping. The solenoid valve assembly includes a tubular spool rod having a female threaded portion formed on one end thereof, a plug including a male threaded portion threadedly coupled to the female threaded portion and a head portion having a diameter lager than that of the male threaded portion, the plug being threadedly adjusted in position with respect to the spool rod. The assembly further includes one or more ring-shaped spacers positioned adjacent or contiguous the male threaded portion for filling a space between an end surface of the spool rod and the head portion, thereby providing fixing torque to the plug the position of which is adjusted. | 08-27-2009 |
20090294230 | HYDRAULIC VIBRATION DAMPER - A hydraulic vibration damper has a cylinder that is filled with a damping medium, displaceably accommodates a working piston disposed on a piston rod, through which the damping medium can flow, and is divided by the piston into two chambers. There is an equalization chamber that is connected with the working chamber, a pressure channel connected with the chamber on the piston rod side, and a controllable setting valve module connected with the pressure channel and the equalization chamber. The setting valve module has a pilot valve arrangement having a pilot pressure chamber and a pilot valve. The pilot pressure chamber is hydraulically separated from the main valve, and is connected with a valve chamber by a connection channel and at least one throttle point. A pressure element counteracts opening of the main valve, and pressure that acts on the main valve can be varied by the pilot valve. | 12-03-2009 |
20090314592 | DAMPER DEVICE AND MANUFACTURE OF SUCH A DAMPER DEVICE - A damper device is manufactured from a single integrated body. The damper device comprises a damping chamber portion, a valve housing portion with adjustable valve devices and a pressurization reservoir portion. The internal volume of the damping chamber portion is divided by a piston into a compression chamber and a return chamber and the internal volume of the pressurization reservoir portion is divided by a member that is acted upon by a pressure that pressurizes the damping medium in the device. The three different portions are arranged substantially parallel to one another and the internal volume of the valve housing is connected both to the pressurized interior of the pressurization reservoir and to both chambers of the damping chamber part so that the damper always functions with a positive pressure in both the compression and the return chamber. The body is extruded as a single workpiece with alternating heat-conducting channels and fins on its outer surface. | 12-24-2009 |
20100126812 | Vibration Damper With Stroke-Dependent Damping Force - A vibration damper including a cylinder in which a displacer carries out a translational movement. The displacer has a work piston which divides the cylinder into two work spaces. The work spaces outside the displacerfor each operating movement direction of the displacer are connected to damping valves by a flow connection. Every flow connection has only one flow direction through a check valve arrangement. The flow connection has a plurality of inflow ports which are offset in axial direction starting from the work spaces and is formed by a bypass channel, and a plurality of damping valves are connected to the bypass channel and admit damping medium via the inflow ports. | 05-27-2010 |
20120305349 | SHOCK ABSORBER - A shock absorber in which a flow of hydraulic oil caused by sliding movement of a piston in a cylinder is controlled by a pilot type main valve and a pilot valve to generate damping force. The valve-opening operation of the main valve is controlled by adjusting the pressure in a pilot chamber with the pilot valve. A valve block and a solenoid block are connected together into one unit and inserted into a casing before being secured with a nut. At this time, an actuating rod of the solenoid block is engaged with a pilot valve member retained by a pilot spring and a fail-safe spring in a cylindrical portion of a pilot body of the valve block. | 12-06-2012 |
20150316117 | DAMPING FORCE VARIABLE VALVE ASSEMBLY - A damping force variable valve assembly includes a spool ( | 11-05-2015 |