Abstract: An elastic connecting bar for a system for active control of vibrations and which is apt to be subjected, through one of its ends, to vibrational loads exerted along its axis and which is linked by its other end to a structure which it is expedient to isolate from vibrations. The bar includes a tubular part 12 linked to one of the ends 14 of the bar and surrounding a part 15 of smaller section linked to the opposite end 16, and wherein these two parts 12, 15 are transversely linked to one another by at least two elastic bearings 10, 11 which are clasped between, them and axially spaced. The active system is used for control of vibrations acting between said parts 12, 15.

Abstract: A disk brake for a vehicle, for example, an automobile, is provided with a return spring to prevent dragging of pads by a disk when the brake is released. The disk brake has a carrier secured to a non-rotating part of a vehicle, a pair of friction pads supported by the carrier at respective positions which face each other across a disk, a pair of pad guides for slidably guiding the friction pads, a caliper supported by the carrier to press the pair of friction pads against the disk, and a linear return spring retained at both end portions thereof by the pair of friction pads, respectively, to bias the friction pads away from the disk. The return spring is bent radially of the disk at an intermediate portion thereof to form a single bent portion which is retained at the inward end thereof by a hook that is formed on the pad guide.

Abstract: A two-stage shock absorber comprises a casing having a low level damping piston rod therein an end portion of which has two spaced apart flanges thereon with a low resistance fluid path formed therebetween. A floating ring piston is slidingly seated about the piston rod between the flanges and has high resistance throughbores therein. When vibrational forces become excessive to a point where one or the other of the flanges engages against the floating ring piston, the low resistance fluid path is closed off by the floating piston and the high resistance throughbores engage within the fluid flow system to cause a shift from primary low level damping to a high level damping. Once pressure within the system equalizes and the ring piston is no longer in contact with either of the flanges, low level damping resumes.

Abstract: A support for a coil spring of a spring strut of a motor vehicle, which is cardanically disposed on the vehicle body, comprises a coil spring which, on one side, on the side of the vehicle body, is supported on an upper first elastic spring pocket and, on the other side, is supported by way of another lower second spring pocket which is stationarily held on the spring strut. In the operating direction of the coil spring, the upper spring pocket has areas of different elastic characteristics. In an area of high axial pressure forces of the compressed coil spring, the elastic characteristic of the spring pocket is less than in an opposite area of the spring pocket of lower axial pressure forces of the compressed coil spring. By means of this development of the spring pocket, a disadvantageous bulging of the coil spring during compression and rebounding movements is largely prevented.

Abstract: A hydraulic shock absorber for use in a suspension system of a vehicle has the flow of a hydraulic fluid, induced in a hydraulic fluid passage providing communication between two cylinder chambers by the sliding motion of a piston in a cylinder, controlled to generate a damping force, thereby making the vehicle comfortable to ride in and improving the steering stability. The hydraulic shock absorber comprises a tubular guide communicating at both ends thereof with the two cylinder chambers, respectively. A shutter slidably fits in the tubular guide. A chamber is formed in the guide at one end of the shutter, the chamber communicating with one of the two cylinder chambers through a first orifice passage. A second orifice passage is provided in the side wall of the tubular guide, the second orifice passage being opened and closed by the sliding motion of the shutter, and a bypass passage provides communication between the two cylinder chambers through the second orifice passage.

Abstract: A spring and grid sub-assembly for use in furniture and box spring assemblies in which spring modules are attached to the wire grid through an attachment system in which the springs are in both an over-under relationship and a side-to-side interwoven relationship with the cross wires through plastic deformation of the cross wires whereby the springs can not be removed from the wire grid without plastic deformation of either the grid or spring modules. The resultant sub-assembly can be easily transported from a sub-assembler to a final assembler without risk of the springs being displaced or removed from the wire grid. Furthermore, spring clips are not needed for attaching the spring modules to the grid.

Abstract: A wheel cylinder has a body, pistons, boots and seals. A screw assembly positioned between the two pistons holds the pistons apart to maintain the specified clearance between the brake linings and the brake drum while the brake is released. If a predetermined amount of outward movement of the pistons occurs during brake actuation, the screw rotates with further piston outward movement. When the brake is released, the pistons return inwardly, and the screw is locked against reverse rotation by means of a clutch, preventing the pistons from returning more than the prior predetermined amount of outward movement before screw rotation began. A clutch seal on an extension of one clutch member seals in a piston cylinder section. The other clutch member is formed on that piston next to one end of the cylinder section. The cylinder section axially beyond the seal is vented to atmosphere.

Abstract: A fluid-filled elastic mount including first and second support members and an elastic body interposed between these support members for elastically connection thereof. The elastic mount has a pressure-receiving chamber partially defined by the elastic body, first and second equilibrium chambers defined by first and second flexible diaphragms and communicating with the pressure-receiving chamber through first and second orifice passages, respectively, and a vacuum-receiving chamber which is separated by the second diaphragm from the second equilibrium chamber. In operation, the vacuum-receiving chamber is selectively subjected to a sub-atmospheric pressure or exposed to the atmosphere to control the elastic deformation of the second diaphragm. The elastic mount further has an auxiliary air chamber which cooperates with the vacuum-receiving chamber to accommodate a volumetric change of the second equilibrium chamber when the vacuum-receiving chamber is exposed to the atmosphere.

Abstract: A controllable or regulatable hydraulic shock absorber has a damping-control valve designed as a force-proportional valve and has a closing force variable directly or indirectly via a proportional magnet. The damping resistance brought about by the damping-control valve is consequently very largely independent of the stroke speed of the shock-absorber piston.

Abstract: A truck is braced by diagonal struts that are clamped to one another at their intersection. The clamp includes a pair of plates each having a channel to receive one of the struts. An elastomeric member is located between the struts and the plates to permit some flexibility in a vertical direction.

Abstract: Impact damper for motor vehicles, the impact damper having two tubes which can be pushed one inside the other, the inner tube having a first and second fluid chamber and a gas chamber separated from the fluid chamber by a separating piston. A third fluid chamber is located behind a work piston and the tubes can be retracted or extended by changing the pressure within the fluid chambers of the impact damper.

Abstract: A fluid-filled elastic mount including a first and a second support member, an elastic body for elastically connecting the two support members, and a closure member fixed to the second support member to form a fluid chamber therein. The closure member includes a flexible diaphragm and a metallic member secured to the outer periphery of the diaphragm. The metallic member is press-fitted in a large-diameter portion of the second support member remote from the first support member, and fixed by caulking to the large-diameter portion. At least one sealing rubber lip is pressed between the metallic member and the second support member to assure the fluid tightness of the fluid chamber. Further, a fluid discharge passage is formed radially outwardly of the sealing rubber lip(s), between the metallic member and the large-diameter portion of the second support member, for permitting the fluid to be discharged from the fluid chamber. Also disclosed is a method of producing such a fluid-filled elastic mount.

Abstract: A hook for a guard rail assembly has a vertical and a horizontal leg at one end adapted to engage a guard rail and a fastener receptacle at the other end adapted to receive a resilient fastener.

Abstract: An improved service-life, low-profile, elastomeric mounting for placement between the side-frame-pedestal-jaw roof and the axle-box or axle-bearing adapter crown on a three-piece, railroad-car truck. The mounting minimizes the damaging compression induced edge strains resulting from the cocking motions imposed on the elastomeric mounting during railroad car braking and rocking. The addition of shims, specialized elastomer contouring, graded thicknesses of the elastomeric layers in combination with high shape factor of the elastomeric layers allows the compression induced edge strains to be significantly reduced and results in extended service-life of the elastomeric mounting.

Abstract: The invention concerns a one-tube or two-tube shock-absorbing leg for the chassis of a motor vehicle. It has a sensor that measures the difference between the speed of the vehicle's body and that of its axis. The sensor comprises a winding and a permanent magnet. The sensor is accommodated such that the shock-absorbing leg's helical spring cannot affect the results.

Abstract: A support block for a guard rail assembly has a vertical wall with non parallel front and rear surfaces. A pair of spaced legs project laterally from the front surface of the vertical wall. One of the legs has inner and outer side walls which are joined by an outer end wall. The inner and outer side walls extend different distances from the front surface such that the outer end wall tapers and is non parallel to the front surface.

Abstract: A system which reduces an electric load on an on-board electrical system of a vehicle. The brake system has an anti-lock and traction control system. The latter has a high-pressure pump, with which pressure fluid can be withdrawn from a supply container and fed into a brake line. A charging valve that can be switched out of its shutoff position into its open position by a control unit is disposed in an intake line of the high-pressure pump. The control unit switches the charging valve into its open position at least whenever feeding of pressure fluid into the brake line is demanded. The brake system is especially well-suited to passenger cars, which have a very severely fluctuating rear axle load status.

Abstract: The invention is directed to a shock absorber in which the structure of both the main valve and the pilot control valve is simplified, and makes their operation less vulnerable to malfunction because the number of parts moved relative to one another is reduced. This is achieved by functionally uniting the valve plate and pressure plate in an especially embodied novel valve plate, in the form of an annular shim with a fingerlike toothed contour of the inside circumference, which pierces a corresponding contour of an axial region of a stroke limiter, as a result of which a guidance of the valve plate quite close to the force introduction points by means of a spring or the openings to be closed takes place, thereby preventing unilateral opening of a valve plate. The relief piston is sealed off from the pilot control chamber by means of one gap seal and one sealing ring, so that the production tolerances can be greater and as a result an original-shape method without remachining is possible in manufacture.

Abstract: A MacPherson Strut assembly, or the like, with a hydroelastic suspension attachment in which the attachment is formed by two thick membranes of elastomeric composition which enclose a liquid. This unit forms a hydroelastic cartridge in which a sliding flap, provided with sealing joints, can move within a rigid confinement cup. The flap itself is encircled by a liquid passage having a large cross section clearance which causes a high level damping of vibrations which result from the resonant movement between masses between which the suspension attachment is mounted.

Abstract: Surge brake systems are used so that the brakes of towed vehicles can be applied automatically during slowing and stopping of towing vehicles. However, the known surge brake systems automatically apply the brakes to the towed vehicle during backing of the towing vehicle. The subject brake system includes a solenoid actuated valve which is disposed in a brake line to communicate a surge brake coupler to the brakes in a towed vehicle. A relay receives an electrical signal from an outputting device which places the valve in a closed position which disables the surge brake coupler and prevents the application of the brakes on the towed vehicle during backing of a towing vehicle. The relay receives an electrical signal from a producing device which overrides the electrical signal from the outputting means placing the valve in an open position. The open position of the valve allows application of the brakes on the towed vehicle so that braking is possible during backing of the towing vehicle.