Abstract: A damper system for a vehicle is provided that includes including a pressure tube, a piston rod, and a piston assembly that is mounted to the piston rod and separates the pressure tube into first and second working chambers. A valve assembly, mounted to the piston assembly, controls fluid flow between the first and second working chambers. A frequency dependent damper assembly, coupled to the piston rod at a position below the piston assembly, includes a plunger sleeve that is longitudinally moveable to transmit an adaptive force to a valve assembly. A plunger travel limiter, positioned longitudinally between the frequency dependent damper assembly and the valve assembly, contacts the plunger sleeve and prevents the plunger sleeve from moving further towards the piston assembly to limit the magnitude of the adaptive force applied to the valve assembly.

Abstract: Provided is an electric braking device that transmits power generated by an electric motor MTR to a pressing member PSN and causes pressing force to be generated by the pressing member PSN with respect to a friction member MSB. Hysteresis characteristics in the relation between the power supply amount to the electric motor and the pressing force of the pressing member are detected each time a predetermined point in time arrives. Upon determination of a “holding state in which the pressing force is held constant”, a minimum value for a power supply amount that makes it possible to maintain the current pressing force is obtained on the basis of the most recently detected hysteresis characteristics and the power supply amount is set to a value determined on the basis of the obtained minimum value for the power supply amount.

Abstract: The present invention relates to a flow adjusting device (1) for a shock absorber for a vehicle, the shock absorber comprising a cylinder (21) and a piston (22) dividing the cylinder into at least a first and a second working chamber (23,24). The flow adjusting device is adapted to control at least a first damping medium flow (F1) and a second damping medium flow (F2) adapted to flow from at least one of the working chambers and comprises at least a first valve (2), adapted to control the first flow, and a second valve (3), adapted to control the second flow. The first valve and said second valve are jointly adjusted. The present invention further relates to a shock absorber comprising such a device and a front fork comprising such a shock absorber.

Abstract: The throttle device 1 includes a throttle body 10 having an intake passage 11, a throttle valve 12 arranged to rotate within the intake passage 11 for opening and closing the intake passage 11, and a throttle shaft 13 rotatably arranged with respect to the throttle body 10 which is integrally formed with and concomitantly rotatable with the throttle valve 12. A throttle gear 16 is fixed to the throttle shaft 13 and rotated by the actuator. A spring 20 biases the throttle gear 16 in a predetermined initial opening angle. A full-close stopper 15 is provided in the throttle body 10. The full-close stopper 15 restricts the throttle gear 16, which rotates in the opening and closing directions, from rotating past the fully closed angle position. A stopper member 20f is formed at the spring. An initial-open stopper 18 is provided in the throttle body 10 to restrict the stopper member 20f from rotating past the initial opening angle.

Abstract: A vehicle height adjustment device includes an actuator, a detector, and a controller. The actuator is driven when supplied with a current and is configured to change a relative position of a body of a vehicle relative to an axle of a wheel of the vehicle. The detector is configured to detect the relative position. The controller is configured to control the current supplied to the actuator to make the relative position a target value so as to adjust a vehicle height of the body. When a detection value of the detector is smaller than the target value of the relative position, the controller is configured to alternately supply an increase current and a maintenance current to the actuator. The increase current increases the relative position to increase the vehicle height. The maintenance current maintains the relative position to maintain the vehicle height.

Abstract: A gas spring curve control valve for a adjustable-volume gas-pressurized device is described. The valve allows for selection from among at least four spring curves and can be packaged in small spaces/devices. In an exemplary embodiment of the invention, a rotary cam having grooves and lobes that interact with spring loaded ball bearings and an external adjuster knob are used to easily change the gas spring curve “on-the-fly” and with minimal user effort.

Abstract: The present exemplary embodiments relate to a variable damping force shock absorber in which variable valves each capable of varying a damping force during compression and rebound strokes are installed inside a cylinder, and thus, a volume of an apparatus is reduced to easily secure an installation space and prevent interference with peripheral components.

Abstract: A method and apparatus for a vehicle suspension system gas spring. In one embodiment, a vehicle suspension system gas spring includes a compressible main gas chamber and an additional volume combinable with the main chamber to change a gas spring rate of the system. In one embodiment, a low friction piston seal is created by a flexible seal member.

Abstract: A vehicle height adjustment device includes a spring having one end supported on a vehicle body side and another end supported on a wheel side. An adjustor includes an accommodation chamber accommodating fluid and adjusts a length of the spring in accordance with an amount of fluid in the accommodation chamber. A storage chamber stores fluid. A guide passage guides fluid from the accommodation chamber to the storage chamber. An actuator includes an operation rod to press a push rod. A valve body closes the guide passage when seated on a seat and opens the guide passage when pressed and detached from the seat by the push rod. A press member includes a contact portion and a shaft. The press member presses and seats the valve body on the seat. An accommodation member accommodates the valve body and the contact portion. A support member supports the shaft movably.

Abstract: There is provided a damper that can reduce a shock when a piston speed reaches a high speed range from a low speed range without deteriorating a ride comfort while the piston speed is in the low speed range. In order to solve the above-mentioned problem, in a damper D of the present invention, since a orifice (7) and an opening/closing valve (9) are arranged in parallel with a bypass passage (B) bypassing a damping passage (3), and a valve opening pressure of an opening/closing valve (9) is made lower than a valve opening pressure of a damping valve (5), a sudden change in an inclination of a damping force characteristic can be moderated at an inflection point of the damping force characteristic even if the damping force is increased while the piston speed is in the low speed range.

Abstract: A pressure damper includes: a cylinder containing fluid; a defining member disposed in the cylinder movably in an axial direction and configured to define a space in the cylinder into a first fluid chamber and a second fluid chamber that contain the fluid; a passage forming portion configured to form passages of the fluid that flows in accordance with a displacement of the defining member; first passages as defined herein; second passages as defined herein; a control member that opens and closes the first passages and the second passages so as to control flows of the fluid in the first passages and the second passages; and a load application member as defined herein.

Abstract: An unsprung state detection part (140) calculates a variation amount X (=|????|), which is a magnitude of a difference between a detected angle ? output from a resolver rotational angle sensor (40) for detecting a rotational angle of an in-wheel motor (30) and an estimated angle ?? of a motor rotational angle (S11 to S13). The estimated angle ?? can be calculated by adding an estimated angle of the rotation of the motor (30) in one calculation cycle to a detected angle ?n?1 of the previous calculation cycle. When the variation amount X is more than a road surface determination threshold Xref, the unsprung state detection part (140) determines that the travel road on which a vehicle (1) is traveling is a rough road (S14, S15). As a result, the road surface determination can be made by using the rotational angle sensor (40).

Abstract: A device for damping a transmitted vibration by the moment of inertia of a fly wheel and the adjustable resistance force of a viscous magnetic fluid to allow the viscous magnetic fluid exerts its property even under no external power source. A sleeve with an attached ball nut is disposed in a first cylinder so as to reciprocate. The reciprocating motion of the sleeve is converted into a rotational motion by a ball screw to rotate a fly wheel in a second cylinder and a generator rotating shaft. Between the fly wheel and the inner surface of the second cylinder, a sealed space is formed in which a viscous magnetic fluid is sealed. A magnetic field generating unit which generates a magnetic field running across the sealed space with the fly wheel serving as a part of a magnetic circuit is disposed on the inner circumference of the second cylinder.

Abstract: A damper system for a vehicle comprises an electrically adjustable hydraulic shock absorber and a printed circuit board assembly. The printed circuit board assembly includes power drive electronics, and is electrically coupled to the shock absorber. The printed circuit board assembly is disposed with the shock absorber.

Abstract: A piston-cylinder unit includes: a cylindrical pressure tube having a first end side defining an end side opening; a piston, axially displaceable in the pressure tube, the piston having a piston rod, the piston rod being guided out of the pressure tube at the first end side through the end side opening; a piston rod guide and a piston rod seal, arranged inside the pressure tube, which cooperate together to sealingly guide the piston rod at the end side opening; and a cup-like protective cap surrounding an end region of the cylindrical pressure tube from the first end side, the protective cap having a base at its end, the base having a coaxial through-orifice having an inner wall through which the piston rod extends in a displaceable manner. The inner wall of the through-orifice tightly surrounds the piston rod.

Abstract: A hydraulic shock absorber includes a damping force generation unit and a damping force adjustment unit. The damping force adjustment unit includes a push rod that changes an opening area of an oil path formed in a piston rod, an electric motor functioning as a driving source, and a feed screw mechanism that converts rotation of the electric motor into linear movement of the push rod. The feed screw mechanism includes a first slider that is screwed to an output shaft of the electric motor in an advanceable/retractable manner, a second slider is fitted movably to the first slider, and a set spring that pushes the second slider against one end of the push rod.

Abstract: The invention concerns a vehicle damping device for a vehicle seat (1)/vehicle cabin with a fixed lower part (5) and an upper part (4) vibrating in relation to the lower part (5) and at least one damper (9) arranged in between, where in a damping force-speed diagram, with rising speed (11) of the vibrating upper part (4) in relation to the fixed lower part (5), a damping force (10) of the damper (9) develops such that the damping force (10) in a first speed range (15) has a substantially linear first course (12) with a first gradient and in the second speed range (16, 18) a second course (14, 19) with a second gradient steeper than the first gradient.

Abstract: A suspension damper device comprising a housing adapted to be affixed, on which a suspension means may be supported which may be tensed in a direction of suspension via a damper body of a damping means adapted to be connected to a component to be dampened, wherein in the damper body a damper piston fixedly connected to the housing is guided which physically separates two damper spaces in the damper body, characterized in that three valves are provided whereby a volume flow of a fluid between the damping spaces may be controlled in particular during tensing of the suspension means in the direction of suspension.

Abstract: A self-adjusting end position damping arrangement includes a stroke space 9 which is delimited by a movable stroke element 7, 24 and a part of the pneumatic cylinder 1, with the stroke space 9 being connected via a connecting duct 14 to the working pressure P1 which acts on the cylinder piston 22 or to the ventilation pressure (P3) in the outlet duct 3 and the stroke element 7, 24 being acted on via a damping duct 16 by the damping pressure P2 in the damping volume 19, a non-return valve 12 is arranged in the connecting duct 14 upstream of the stroke space 9, which non-return valve 12 blocks in the direction of the working pressure P1 or the ventilation pressure (P3), respectively, and a ventilation duct 5 is provided, which ventilation duct 5 can be opened by means of the movable stroke element 7, 24 and which is connected to an outlet duct 3.

Abstract: A valve (1) comprises a spring arrangement comprising a stiff (5) and a weak spring (6). The weak spring (6) has the form of a thin, circular disc having a first spring surface (6?) and a second spring surface (6?), and an inner spring part (6a) and an outer spring part (6b) substantially separated from each other with cavities (6c), yet at two points, at least, connected with legs (6d). The effect of the connection is that the outer spring part (6b) and the inner spring part (6a) can deflect in relation to each other.

Abstract: A steering damper can generate a smaller damping force according to a first damping force characteristic or a larger damping force according to a second damping force characteristic by controlling a flow of hydraulic oil during a steering operation of a steering member. When the associated vehicle is running at a relatively low or medium speed and is not accelerating, and if an operational speed of the steering damper is lower than a predetermined value, damping force according to the first damping force characteristic can be generated in the steering damper. On the other hand, when the operational speed of the steering damper is equal to or higher than the predetermined value, damping force according to the second damping force characteristic can be generated in the steering damper.

Abstract: 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.

Abstract: A refrigerator with an ice dispenser includes a spiral type time delay unit for controlling the opening and closing of an ice duct. A duct cap opens and closes an ice duct formed in the refrigerator. A rotating shaft of the time delay unit is operably connected to the duct cap. Foldaway catching members on a rotating shaft intersect with a threaded cylindrical body. The catching members fold back to allow a quick opening of the ice duct. The catching members then interact with the threaded cylindrical body as the ice duct closes to delay the closing process.

Abstract: 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.

Abstract: 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.

Abstract: An integrated suspension system includes a cylinder that hermetically contains gas therein; a piston that has a motor at an upper portion thereof; a disk unit including a second disk that has a plurality of passage holes formed there through and a bottom surface coupled to a driving shaft of the motor to rotate while moving vertically integrally along with the piston, and a first disk that has a plurality of passage holes and is stacked on and connected via a hinge to the center of a top surface of the second disk to move vertically within the cylinder integrally along with the second disk without any rotation; and a control unit that controls an opening degree established through overlap of the passage holes formed in the first and second disks by changing power supplied to the motor to control a rotational angle of the second disk.

Abstract: A magnetorheological damper device is provided having an increased shear interface area per unit volume of the device, which enhances the stroking force of the damper. The damper generally includes a cylindrically shaped housing; a magnetorheological fluid disposed in the cylindrically shaped housing; a piston assembly disposed within the cylindrically shaped housing in sliding engagement with the cylindrically shaped housing defining a first chamber and a second chamber, wherein the piston assembly comprises a plurality of cylindrically shaped fluid passageways extending from the first chamber to the second chamber, and an electromagnet; and a power supply in electrical communication with the electromagnet.

Abstract: A hydraulic dashpot comprises, first, a cylinder and a piston. The cylinder (1) is charged with shock-absorbing fluid. The piston (3) is provided with ports and valves, is mounted on one end of a piston rod (2) and divides the cylinder into two chambers. The piston rod travels into and out of the cylinder and is provided with a central bore (20). The dashpot also comprises an adjustable bypass accommodated inside the piston rod or inside an extension (7) thereof. The bypass is provided with radial outlets (19, 23, 37) through the piston rod or extension. The cross-section of the bypass during the compression phase can be established independent of its cross-section during the suction phase and vice versa. There are two valves in the end of the piston rod near the piston or in the piston-rod extension. Each valve is provided with a rotating plunger (18, 21, 32, 33) with a rotary connection. Each plunger operates in conjunction with a radial inlet or outlet (19, 23, 27).

Abstract: A suspension system for motor vehicles with level regulation for adjusting a predetermined height of the vehicle body includes at least one piston-cylinder unit with a work cylinder, a piston rod and a damping piston having damping valves. A pump is connected between an oil reservoir and the piston cylinder unit via corresponding inlet and outlet lines. The pump is driven by a drive unit and the level height is detected by a sensor which acts on the drive unit or on a regulating valve via evaluating electronics.

Abstract: Parallel paths for damping fluid are provided through the piston of a suspension damper, each of which are provided with separate damping valving sets to control damping. Communication through one of the paths is controlled by a movable control valve member, which is controlled by a magnetostrictive element which deforms in response to application of a magnetic field. The control valve member is moved between active and inactive positions in response to changes in a magnetic field applied by a coil mounted within the damper piston. In one position, all communication of damping fluid is through one of the damping valve sets, while in the other positon damping fluid communicates through both valve sets. Accordingly, damping levels may be varied by controlling the magnetic field.