Abstract: A spring seat is interposed between a spring and a suspension arm supporting the spring. The spring seat includes a support portion for supporting the spring, and an upright partition portion disposed on one side of the spring seat in a lateral direction of the spring seat. The upright partition portion is formed integrally with the support portion for covering a side surface of the spring. The suspension arm includes a recessed portion supporting the spring, and the partition portion has a height equal to or greater than a height of the recessed portion. The partition portion includes a guide surface for upward or laterally guiding foreign matters coming from an outside of the spring seat in the lateral direction of the spring seat.

Abstract: A spring wall for securement between associated end members for forming an associated gas spring assembly includes a first wall portion that extends axially along a longitudinal axis and circumferentially thereabout. The first wall portion is formed from an unreinforced elastomeric material, and the first wall portion has a first nominal stiffness value. A second wall portion extends along the longitudinal axis and circumferentially thereabout. The second wall portion is disposed in longitudinal relation to the first wall portion and has a second nominal stiffness value that is different from the first nominal stiffness value of the first wall portion such that a non-constant stiffness profile is established along a longitudinal length of the spring wall. A gas spring and a gas spring and reservoir assembly utilizing such a spring wall as well as a method of manufacturing a gas spring are also included.

Abstract: The rotary damper comprises: case having viscous fluid 13 filled cylindrical chamber; rotor housed in the chamber; check valve; and pressure-regulating valve. In the chamber, projecting bulkheads are formed. The rotor comprises: the rotor body and vanes. The check valve closes when the rotor rotates in the normal rotation direction, so as to restrict movement of the viscous fluid between areas 111a-111d partitioned by the bulkheads and the vanes. On the other hand, the check valve opens when the rotor rotates in the reverse rotation direction, so as to allow movement of the viscous fluid between the areas 111a-111d. The pressure-regulating valve opens when rotating force applied for rotating the rotor in the normal rotation direction is above a predetermined value, to cancel the restriction of movement of the viscous fluid between the areas 111a-111d.

Abstract: According to the invention, there is provided a damping structure capable of obtaining a sufficient damping effect even against vibrations of small amplitudes, by promoting movements of powder/particle materials inside a hollow body. In the damping structure of the invention, a damping member 2 is provided on a structure 1 to be damped. The damping member 2 includes a hollow body 5 which is filled with powder/particle materials 3, partially leaving a space 4. A vibration wall face part 7 which vibrates more violently than the structure 1, on receiving vibration, is formed in at least a part of wall face parts 6 of the hollow body 5. The vibration wall face part 7 is preferably formed of a material having a lower elastic modulus and/or a lower density than the other parts.

Abstract: In a method for setting the clamping force exerted by a parking brake, which is generated at least partially by an electromechanical braking device and, if needed, in supplementary fashion by a hydraulic braking device, in the provision of the hydraulic clamping force, a boost pressure to be generated in the hydraulic braking device is increased with respect to a switch-off pressure at the switch-off time that corresponds to the hydraulic clamping force.

Abstract: A device for springing a mass including a fluid spring and a frame, in which the fluid spring is arranged between the mass and the frame in such a way that the mass is mounted on the frame in a sprung and/or damped manner. An add-on-fluid volume device for providing an additional fluid volume for the fluid spring includes at least two fluid volume chambers that can be fluidically connected to one another and which have a common, displaceable chamber wall.

Abstract: Disclosed herein is an electric brake system for a vehicle including a reservoir, an input rod, and a pedal displacement sensor to sense a displacement of a brake pedal. The electric brake system includes a pressure supply unit connected to the reservoir and a hydraulic channel and to output an electrical signal through the pedal displacement sensor, a hydraulic control unit provided with a first circuit and a second circuit, a shut-off valve to control the hydraulic pressure transferred to a wheel cylinder, a switching valve connected to a channel connecting the pressure supply unit to the hydraulic control unit, a compliance unit installed in a channel connected to the shut-off valve and the switching valve and including a compliance chamber, a piston and an elastic member, a simulator connected to the master cylinder to provide reaction force, and an electronic control unit to control the motor and the valves.

Abstract: A disc brake, having a brake caliper which straddles over a brake disc and in which brake pads are arranged which are provided with friction linings and can be pressed in each case with their friction lining on both sides against friction rings of the brake disc. The disc brake is configured such that the friction rings are covered outside an overlap region of the friction linings by a housing which is stationary with respect to the brake caliper and is connected to a suction device. A dust removal device is provided between the housing and the suction device.

Abstract: In a frictional engagement arrangement for a carriage supported on, and guided by, at least one guide track and provided with a friction engagement mechanism actuated by a slide wedge drive which includes a pressure member which is engageable with the guide track, the slide wedge drive includes an operating mechanism which is arranged in a multistep through bore extending in parallel with the longitudinal extent of the guide track with the pressure member and a slide wedge cage movably disposed in a bore extending normal to the multi-step through bore.

Abstract: A valve assembly of a shock absorber can achieve both an effect of varying an attenuation force according to a frequency region of vibration or shock transferred to the shock absorber during the driving of an automobile and an effect of varying an attenuation force according to an additional pressure and can increase the attenuation force in response to an instantaneous input of a large amplitude behavior. The valve assembly includes: a valve housing coupled to a piston rod having an orifice hole and a space formed therein, the space having an open lower end to communicate with the orifice hole; a frequency sensitive valve unit including a free piston configured to vertically partition the space; and a sub-valve unit coupled to the lower end of the space, wherein operation of the sub-valve unit is controlled by ascending and descending of the free piston.

Abstract: A main brake cylinder for a hydraulic vehicle brake system of a motor vehicle is disclosed. The main brake cylinder includes an electric motor that is operated as a generator for decelerating the motor vehicle. For service braking, pressure is applied to a brake circuit by the main brake cylinder and to another brake circuit by a hydraulic pump. In order to reduce a pedal force, a first piston has a smaller piston surface and a second piston only moves if a greater brake fluid volume is required. A preloaded hydraulic accumulator limits an increase in pressure.

Abstract: A damper hole having a large-diameter section is formed inside a body which is made of metal. A flange which fits in the large-diameter section is formed in a damper which is made of rubber and is received in the damper hole. The flange defines a cushion chamber in the large-diameter section. A gap for letting air restrictively discharge from the cushion chamber is formed between an outer periphery of the flange and an inner periphery of the large-diameter section. Motion energy of a moving object colliding with the damper is absorbed by both elasticity produced by the compressed damper and an air cushion effect produced by the flange and the cushion chamber.

Abstract: A rotor comprising: a two sided braking surface, a base portion; a hat portion connected to the two sided braking surface via the base portion, the hat portion including: a mounting face and a hat wall; and wherein the base portion includes holes and the hat wall includes holes.

Abstract: A sealing assembly and method of manufacturing a sealing assembly for a spring brake actuator having a dynamic center seal for sealing a first surface to a second surface. The sealing assembly has dynamic sealing elements that seal in a smooth hole or bore, where the sealing element or element stack is retained in the hole or bore on each end by a bearing for the center pushrod or center tube.

Abstract: A fluid-filled type vibration damping device having a first and a second fluid chamber respectively filled with non-compressible fluid and which experience relative pressure fluctuations during vibration input, and provided with an orifice passage through which the first fluid chamber and the second fluid chamber communicate with one another, while being capable of exhibiting better dependability and durability in terms of effective vibration damping action of several types of vibration with different frequencies. In the device, tuning frequency of the orifice passage is varied by varying a passage length of the orifice passage 68 through adjustment of an insertion distance of an inside orifice member into an outside orifice member.

Abstract: The invention relates to an internally ventilated brake disk for disk brakes, in particular for motor vehicles, having two friction disks that are arranged adjacent to one another, that are connected to one another by webs that have an essentially radial, preset curvature, and that form cooling channels between them for cooling air, and that are separated from one another in the peripheral direction. According to the invention, the webs in each case extend along a preset curve section of a web curve that has a preset curvature, with the individual web curves, separated from one another in the peripheral direction and extending between an outer peripheral edge and an inner peripheral edge, have an essentially identical design.

Abstract: A hydraulic pressure spring 1 includes a hollow cylindrical cylinder 4 having a threaded portion 3 at one end 2 thereof; a closure means 5 which is threadedly engaged with the threaded portion 3 at the one end 2 of the cylinder 4 and closes the one end 2 of the cylinder 4; a closure means 7 which is provided at the other end 6 of the cylinder 4 and closes the other end 6 of the cylinder 4; a compressible liquid 9 which is sealed in an interior 8 of the cylinder 4 and is pressurized to a predetermined pressure; a rod 10 which is passed through the closure means 5 movably in an axial direction A and causes the liquid 9 in the interior 8 of the cylinder 4 to undergo a pressure rise as the rod 10 enters the interior 8 of the cylinder 4; and a piston 11 disposed in the interior 8 of the cylinder 4 and attached to one end of the rod 10.

Abstract: A mechanical pressurization device is connected to a common passage, and brake cylinders provided respectively for front left and right and rear left and right wheels are connected to the common passage respectively via pressure holding valves. Each of the pressure holding valves in the front is a normally open valve, and each of the pressure holding valves in the rear is a normally closed valve. In the event of an abnormality in which a hydraulic pressure in the common passage cannot be controlled using a hydraulic pressure produced by a power hydraulic pressure source, a hydraulic pressure in the mechanical pressurization device is supplied to the front brake cylinders provided respectively for the front left and right wheels.

Abstract: An active dynamic vibration absorber includes: a coil part provided inside a housing and wound with a coil; a yoke part that moves with respect to the coil part when current flows in the coil part, and includes an upper yoke, a lower yoke, and a permanent magnet provided between the upper yoke and the lower yoke; springs mounted to the yoke part so as to switch a movement of the yoke part to a vibration; first and second slide protrusions electrically connected to both ends of the coil of the coil part, upper and lower contact protrusions formed in the yoke part to correspond to the first and second slide protrusions; and first and second drive devices that generate a relative movement between the coil part and the yoke part by selectively applying current to the upper and lower contact protrusions according to a control signal.

Abstract: Provided is a cylinder apparatus capable of obtaining optimum valve characteristics. The cylinder apparatus has an annular valve member provided with at least a part of flow paths and having a through-bore, a pin member inserted through the through-bore of the valve member, and an annular disk valve having the pin member inserted therethrough and movable at both inner and outer peripheries thereof selectively away from and into contact with one end surface of the valve member to open and close the flow paths, respectively. The valve member has a projecting portion around the through-bore on the one end surface. The projecting portion is locally provided with circumferentially spaced grooves. The disk valve has small-diameter portions extending toward the grooves from the inner periphery thereof. The small-diameter portions are slidable relative to the pin member.