Abstract: A shock absorber for motor vehicles having at least one end thereof fastened by means of rubber gaskets to a fastening part. To achieve a fastening which is economical, elastic, and has a high degree of insulation and a long useful life, each rubber gasket of the fastening, around the circumference and on the end surfaces thereof, has elevations and/or depressions which run toward or opposite to one another.

Abstract: A hydraulically damping engine mount has two fluid-filled chambers and a connection passage located in a partition between the two chambers. The mount also has an additional flexible wall which encloses an intermediate space, which intermediate space can be evacuated by means of at least one flow connection to alter the damping characteristic of the mount. For this purpose, the flow connection has a check valve and a switch.

Abstract: Hydraulically damping elastic bearing with two rigid end walls opposite one another in the axial direction, and at least two chambers located one behind the other and containing damping fluid, at least one of which has a circumferential wall designed as an elastic spring element, whereby the chambers are separated from one another by a partition which is at least partly elastic exhibiting slits for an exchange of fluids. The elastic partition should thereby be designed so that when there is flow against the membrane from different chambers at the same pressure, a different pressure reduction is possible. For this purpose, the elastic partition is asymmetrical in cross section in relation to its center line, at least in the area of the slits, so that the opposite surfaces of the elastic partition are at different distances from the center plane in the area of a slit.

Abstract: An arrangement for varying the damping of a suspension component such as a vibration damper, gas spring or hydro-pneumatic suspension. In one embodiment, an electronic system is mounted in association with the cylinder of the suspension component to form a variable damping system which, with the aid of other circuitry, varies the damping system of the piston. A vibration damping system for motor vehicles, in which there is a damping element, which has a work cylinder, is divided into two work chambers by a piston. This cylinder contains a damping medium. There is an electronically-controlled bypass valve disposed parallel to the work cylinder. A desired, variable damping force can thereby be achieved in the decompression and compression stage, between two fixed and specified fundamental curves, by controlling the current sent to an electromagnet.

Abstract: An adjustable damping valve for use on a hydraulic vibration damper, gas pressure damper or hydropneumatic suspension, which regulates the damping force, regardless of the orientation, and is variable in the regulation of the throughput, thereby providing a rapid switching frequency response. The damping valve has at least one electromagnet. In the preferred embodiment, each electromagnet can be controlled individually. Further, each electromagnet has a coil body with a winding and an armature. The armature is immersed in a fluid in the flow connection during operation. The armatures of the electromagnets interrupt and open directly the flow connection variably and quickly between an upper damping chamber of the vibration damper and a pressure equalization chamber. In one embodiment, there are a number of individual flow connections with corresponding electromagnets distributed over the circumference for fast action.

Abstract: Axially and radially-loadable bearing which damps in an axial direction for elastic mounting of machines, machine parts, and/or vehicle parts. This bearing has an outer part and two elastomeric or rubber springs located between an inner, often rotating, part and an outer part, which form a cavity area which is preferably filled with damping fluid and in which there is a partition separating the cavity into two chambers. The partition comprises a rigid sliding part guided on the inner part and a rigid fastening part connected in a fixed manner to the outer part. The two rigid parts are connected to one another by means of an elastomeric or rubber thrust washer. Preferably, there is a throttle in at least one of the rigid parts.

Abstract: Hydraulic adjustable vibration damper with a damping piston, which divides the work cylinder into two chamber halves, whereby the two chamber halves are connected with one another by a bypass, in which an electromagnet controls the bypass. The bypass valve located in the bypass includes an axially-movable valve body which works together with a passage and which is controlled by the adjustment apparatus, and at least one spring-loaded valve which operates as a function of the pressure connected in series with the valve body.

Abstract: Accelerometer with an inertial mass suspended in a housing, and with apparatus for deriving a signal for the measurement of a force acting on the inertial mass. The accelerometer measurement is thereby made by means of a light source located inside the inertial mass, the light from which is transmitted through hiles in the inertial mass. The light transmitted through the holes strikes photo elements positioned on the housing. This apparatus makes possible a direct evaluation of the signals, whereby, if necessary, digital words can be produced for the determination of the position of the inertial mass within the housing. In one embodiment the inertial mass has two holes therein which transmit light to two groups of photo elements.

Abstract: A throttle valve having a housing defining a cavity, with structures providing a flow channel within the cavity, and an inlet and outlet in communication with the flow channel. The throttle valve also includes a valve closure in the form of a plurality of individually-controlled electromagnets disposed in the housing cavity, with each having an armature projectable into the flow channel, so as to influence the cross section of the flow channel and thereby regulate the amount of fluid flow through the flow channel.

Abstract: Vehicular suspension system with apparatus for the measurement of at least one parameter related to suspended and/or nonsuspended vehicle parts. The apparatus has sensing units integrated into a vibration damper. The measurement is thereby made by a light source located inside an inertial mass, the light from which travels through at least one hole in the mass and strikes one or more photo elements located in the inside wall of a housing. This apparatus makes possible a direct evaluation of the signals. If necessary, digital words can be formed by different photo elements and holes for the determination of the position.

Abstract: A resilient mounting, such as a rubber mounting, with hydraulic damping, in particular for mounting engines of motor vehicles, has two rigid end walls which are disposed opposite to each other in the axial direction, and at least two chambers which are disposed axially one behind the other and which contain damping fluid. The chambers are separated by a rigid partitioning wall. The chambers communicate with each other through a flow passage which extends in an annular configuration around the axis of the mounting, the flow passage being formed in the rigid partitioning wall. The rigid partitioning wall is arranged radially inwardly of, and supported by, an elastic, axially movable diaphragm which is fixedly and sealingly clamped at its outer periphery. At least one of the chambers is defined in part by a rubber-elastic spring member constituting part of the generally peripheral wall of the chamber.

Abstract: Hydraulic damping single-chamber mounting for motor vehicles with two rigid end walls axially disposed opposite one another, and at least two chambers containing damping fluid disposed axially behind one another. In a first of the two chambers, the damping fluid can be both compressed and decompressed. A rigid partition separates the two chambers. The partition is fixed and rigidly clamped on its outside circumference. The chambers are in communication with one another by means of a circular channel running around a central axis of the rigid partition. The rigid partition is located radially inside an elastic, axially-movable membrane. The membrane is fixed and rigidly clamped on its outside circumference. The rigid partition has at least one overpressure valve which operates for each direction of positive pressure between the chambers to prevent noises during cavitation in the decompression phase and pressure peaks in the compression phase within the first chamber.

Abstract: The invention provides an elastic articulated coupling which comprises a relatively rigid inner member having a longitudinal axis, a relatively rigid outer member having a generally cylindrical interior of a predetermined first diameter surrounding said inner member with substantial clearance, and an elastomeric body located in the clearance between the inner and outer members. The elastomeric body is connected firmly to the inner member. Additionally, a sleeve comprising wear-resistant elastic material is firmly connected to the elastomeric body and disposed between the elastomeric body and the outer member. The elastomeric body and the sleeve together have a predetermined second diameter which is greater than the predetermined first diameter defined by the interior of the generally cylindrical outer member. As a result, the sleeve is connected in a non-positive manner with the interior surface of the outer member merely by radial pre-stressing and by axial bracing.

Abstract: A hydraulic-damping rubber mounting for motor vehicles, particularly for engines of such vehicles, has two rigid end walls which are disposed opposite to each other in the axial direction, and at least two fluid chambers which are disposed axially one behind the other, for containing damping fluid. The chambers communicate with each other through a throttle means. A partitioning wall which delimits and separates the two chambers is axially movable, and is pressed against a sealing surface by way of a prestressed rubber spring so that, at large amplitudes, the reduced pressure which normally might cause cavitation in a chamber is eliminated by way of a bypass opened by stressing the rubber spring so as to open communication at the sealing surface, such that no interfering noise effects occur.

Abstract: A vibration damping system for vehicles, with a damping element in a cylinder. The cylinder holds a damping medium and is divided into two chambers by a piston. A damping valve, located in a bypass, is connected parallel to the work cylinder. The damping valve variably controls damping to any desired damping in the decompression and compression stages of operation of the vibration damping system. The damping valve has an axially-movable, controllable valve being disposable in an opening. The controllable valve is connected in a series fluid flow relationship with at least one pressure-controlled, spring-loaded valve within the same valve body. The damping valve can be installed in numerous variations in vibration damping systems of vehicles.

Abstract: Hydraulic-vibrationally damping rubber mount for motor vehicles with two rigid end surfaces opposite one another in the axial direction and at least two chambers containing damping fluid arranged one after the other, whereby the chambers are connected with one another by means of a choke point. The partition delimiting the two chambers is designed rigidly in the outer region, and held in an axially-movable manner in the inner region. There is a fixed body included in the center. The elastic wall, by means of its flexibility, prevents any cavitation in the rubber mount. At the same time, the fixed body can be used as a tuned vibration-absorption mass for the frequency-dependent reduction of the dynamic spring rigidity.

Abstract: An impact damper which is equipped with an economical, cost-effective work piston, on which not only can a weight reduction be made, but also a substantial simplification in manufacture can be achieved. This impact damper is also designed to be deformable instantaneously upon collision with an obstacle when the force of the collision exceeds a predetermined range. The work piston is designed as a tubular body closed on a side facing a fluid containing chamber, and is provided with a breaking or buckling point, whereby energies can readily be absorbed, even at relatively high impact velocities.

Abstract: Apparatus for the determination of the location and/or distance traveled by a piston in a cylinder. This apparatus can easily be integrated into shock absorbers, vibration dampers and pneumatic springs, and exhibits a high degree of insensitivity to at least electrical interference, therefore being particularly well-suited for operation under unfavorable ambient conditions. As a result of the use of the most modern semiconductor technology and a suitable geometric arrangement, a very good resolution can be achieved, along with an automatic recognition of the direction of piston travel. Such an apparatus has a number of semiconductor elements; in one embodiment, in a beam fastened inside the cylinder or, in another embodiment, in the hollow piston rod. These semiconductor elements are arranged so that, over the axial length of the piston stroke, the distances between two neighboring semiconductor elements correspond to a specified measurement value resolution.

Abstract: The invention provides an improved adjustable hydraulic apparatus of the type having a hollow piston rod operably associated with a damping piston means which divides the interior of a cylinder member into first and second halves filled with damping fluid. At least one throttle means is operably associated with the damping piston means. The hollow piston rod includes a traverse bore disposed above the damping piston means for the constant passage of damping fluid therethrough. An axially displaceable tension rod is disposed within the interior of the hollow piston rod and is operably associated with an adjusting device. The improvement to the damper apparatus, according to this invention, provides an annular gap defined by the tension rod in combination with the inner surface of the hollow piston rod, which functions as a throttle restriction.

Abstract: A parallel-and-external-axis rotary piston compressor includes a housing provided with an inlet and a discharge port and at least two rotors as the main and gate rotors. These are edged with screw-likely extended tooth spaces and are arranged to interengage and with their axes parallel. The tooth profiles of the main rotor are designed to be substantially convex and outside of the pitch circle and the tooth flanks of the gate rotor are designed to be substantially concave and within the pitch circle. In order to guarantee a simple and low-cost manufacture, a robust design and small clearances both for the main and the gate rotors, with a low wear during operation, both flanks of the main rotor teeth are surfaces conforming to the envelope of a helical plane inclined with respect to the axis of the helix and which follow a constant curve course continuously from the tooth root to the tooth crest.