Abstract: A proportional valve for a hydraulic dashpot with a piston and cylinder. The piston travels back and forth in the cylinder on the end of a rod, accommodates pressure-dependent valves for hydraulic fluid to travel back and forth through during both the compression and decompression phases, separates the interior of the cylinder into two dynamics chambers, accommodates channels that provide a route for the fluid that actuates the valves to flow through directly, and accommodates a series of bypass channels. The bypass channels accommodate an electromagnetically actuated bolt. The bolt slides back and forth in the bypass channels, regulating how much fluid can flow through them. The end of each valve facing away from the direct-route channels accommodates a compartment for generating pressure in. Each pressure-generation compartment communicates through the bypass channels with the dynamics chamber on the other side of the piston.

Abstract: Pivot for articulating the load-bearing components of a jack. The pivot comprises a shaft that rotates in a bore. The components are lengths of U section or have lateral flanges or upright edges that overlap in the vicinity of the pivot. The object is to decrease the weight of the jack. Instead of a solid bolt, the axis is a hollow neck (19) stamped through the sides (15 & 17) or flanges (13) of one component and extending through the bore (18) in its counterpart.

Abstract: A stopper for a hydraulic dashpot for a motor vehicle. The dashpot essentially comprises a piston and cylinder. The cylinder is occupied by fluid and is divided into two chambers by a piston. The piston is mounted on the end of a rod that travels into and out of the cylinder. The stopper is mounted at the end of the cylinder the piston rod travels in and out of. The stopper accommodates seals and several annular components, and at least one of the annular components is attached to the wall of the cylinder. The stopper has an annular component in the shape of a cup at the piston-rod entry-and-exit end. The base of the cup-shaped annular component extends radially inward and has a circular hole at the center. The piston rod extends through the hole. The side of the cup-shaped annular component extends toward the interior of the cylinder. The cup-shaped annular component also accommodates an annular piston-rod aligning component that is at least partly surrounded by the cup-shaped annular component.

Abstract: A regulable hydraulic dashpot for motor vehicles with a shock-absorption piston equipped with pressure-sensitive throttle valves traveling back and forth on the end of a piston rod inside a shock-absorption cylinder full of shock-absorbing fluid and dividing the cylinder into two displacement chambers. A gas-filled pressure-compensation chamber operates in conjunction with one displacement chamber. A shock-absorption performance-curve selection valve is positioned outside the cylinder and opens and closes a bypass. To create a hydraulic-fluid channel, the cylinder comprises two parts of different width between the two displacement chambers. One of the parts overlaps the other to the length of the stroke traveled by the piston and its open end is sealed tight to the outer part. The outer part is provided with two hydraulic-fluid conveying connections into the shock-absorption performance-curve selection valve.

Abstract: A hydraulic dashpot for motor vehicles. It essentially comprises a fluid-filled shock-absorbing cylinder alone or accommodated in an outer cylinder and a piston that travels back and forth inside the shock-absorbing cylinder on the end of a piston rod. The piston rod extends through a centering component at one end of the shock-absorbing cylinder or of both cylinders and the edge of the shock-absorbing cylinder or of the outer cylinder is crimped around the centering component. The object is to improve support of the pressure-impact accommodator. The crimping (4) creates a neck (5) at that end of the shock-absorbing cylinder (1) that the impact-absorbing cap (6) rests against.

Abstract: A shock absorber for an automotive vehicle includes a damping cylinder having a cylinder chamber containing damping fluid; a damping piston axially slidably received in the damping cylinder and dividing the cylinder chamber into first and second work chambers; pressure-responsive valves mounted on the damping piston for controlling the flow of fluid through the damping piston in the pressing and pulling phases; an axially hollow piston rod affixed to the damping piston and extending axially in the damping cylinder; an outer tube coaxially surrounding the damping cylinder and defining an equalizing chamber therewith; and a bottom valve assembly provided in the second work chamber. The equalizing chamber is in communication with the second work chamber through the bottom valve assembly.

Abstract: A sensor for measuring the difference between the velocity and/or position of a vibration-suppressing cylinder and that of a piston connected to a piston rod and moving back and forth inside the cylinder in a dashpot for motor vehicles. The sensor consists of a permanent magnet and of a winding in the form of a cylindrical coil and operating in conjunction with the magnet. The magnet is connected directly or indirectly to one of the mutually moving components and the winding is connected directly or indirectly to the other. The component that the magnet (5) rests against and the component that the winding (7) rests against constitute a complete circuit that carries the magnet's field.

Abstract: Jack with an upright (1) that rests on a base (8 or 19). An arm (3) that pivots around a horizontal axis (r) on the upright. The arm has a load accommodation (4) on its free end and engaging the bottom of the vehicle. The arm can be pivoted to various levels directly or by way of levers and transmissions attached to it and to the upright by a manually controlled mechanism, specifically a threaded shaft (5). A brace (15) is attached to the upright and rests flat against the ground or floor (11) at the end of the base facing away from the vehicle while the jack is in the initial-introduction position. The brace is a tab rigidly attached to the upright (1).

Abstract: A hydraulic dashpot for motor vehicles. It has a cylinder that accommodates a fluid. A shock-absorbing piston travels back and forth in the cylinder and divides it into two displacement chambers. The piston is connected to a rod that extends through a centering component at one end of the cylinder. A hydraulic decompression-stroke limiter consists of a cup-shaped recess below the rod-centering component and of another piston on the piston rod above the shock-absorbing piston. Channels extend through the stroke-limiting piston and are blocked off in the decompression-stroke direction. The object is a less expensive dashpot. The stroke-limiting piston consists of a thin stroke-limiting disk with a diameter slightly shorter than the critical diameter of the recess and resting on a thicker support.

Abstract: A regulable hydraulic dashpot for motor vehicles. It features a shock-absorbing piston (1) and a shock-absorbing cylinder (2). The piston travels into and out of the cylinder on a rod (21). The piston divides the cylinder into two hydraulics compartments (3 & 4). The piston accommodates constrictions that incorporate pressure-sensitive valves (26 & 27). The piston has at least one bypass port. A system of (34) of electromagnetically operated valves reroutes the bypass ports in accordance with whether the dashpot is in the suction state or the compression phase. The object is continuous regulation of the level of shock absorption in a dashpot, rapid response to frequent actuation, an easy-to-establish base line, and a simple design. A slide-valve bolt (13) is associated with the routing (5, 9, 10, & 6) of the bypass during the suction phase. Another slide-valve bolt (14) is associated with its routing (6, 8, and 7) during the compression phase.

Abstract: The invention is a hydraulic dashpot for motor vehicles. It comprises a shock-absorber cylinder and a shock-absorber piston and piston rod. The cylinder accommodates a shock-absorbing fluid. The piston divides the cylinder into two displacement compartments. The piston is connected to the vehicle's body or wheel mass by a neck-and-collar pivot that comprises two components. The first component is a collar. The second is a neck. The neck is preferably rubber and metal. The electric supply lines to one or more sensors and/or one or more variable valves extend outward and are connected to the connecting lines of the processing-and/or-actuating circuit by a plug-and-socket connection. An outer ring has a bore that corresponds with the inside of the cylinder or with the inside of the piston rod for the electric supply lines to extend through. A groove extends at least part-way around the inner surface of the outer ring and accommodates the electric supply lines.

Abstract: A variable dashpot for motor vehicles. It comprises a vibration-suppressing piston-and-cylinder mechanism. The cylinder contains displacement fluid. The piston divides the cylinder into two displacement compartments. The piston has a piston rod attached to it. The piston is provided with pressure-dependent valves that vary the level of vibration suppression. The vibration-suppression valve system has two vibration-suppressing valves (2) accommodated in alignment in a cylindrical valve housing (1). Each vibration-suppressing valve consists of an axially displaced electromagnetic plunger (5 or 6) that operates in conjunction with at least one outlet (3 or 4) and of at least one pressure-sensitive valve (7 or 8) on stream parallel or in alignment with the plunger.

Abstract: A variable dashpot for motor vehicles A cylinder (2) full of vibration-suppressing fluid accommodates a piston (3). The piston is provided with vibration-suppressing valves, is fastened to a piston rod (8), and separates the cylinder into two compartments. The compartments communicate through a bypass. The cross-section of the bypass can be adjusted with a component (11) comprising a stator (12) with windings (13) and an electric motor (10) with a rotor (17). The improvement comprises making it possible to continuously and highly dynamically vary the cross-section of the bypass in a dashpot of the same size. This is attained in that the stator windings are accommodated directly in a recess (9) in the piston rod, which is made out of a material that can be magnetized, and the rotor is provided with permanent magnets (22), activates the adjusting component (11), and is accommodated in a bore in the stator (12).

Abstract: An automotive jack in which an upright leg is provided with a U-shaped cross-section and has a foot connected to an end of that leg. A supporting arm is connected to the leg at a pivot with a horizontal axis, whereby the supporting arm is pivotable about the horizontal axis. The jack is actuated through a thread and nut device which is pivotally connected to the leg and the supporting arm. The U-shaped cross-section of the leg has an open end and two sides connected by a convex base portion in the cross-section of the leg and throughout substantially the length of the leg when viewed from outside the leg.

Abstract: A variable dashpot for motor vehicles A hollow piston rod is secured to the vehicle's body by a fastener The piston rod accommodates electric connections that extend to one or more sensors and/or one or more valves The connections are also connected by way of male and female connectors (25) to additional connections. The additional connections extend to processing and activating circuitry. The object is to protect sensitive parts of the dashpot. The female connector (14) is secured in the top of the piston rod (2) and its associated male connector (15) can be connected to it. Such connectors can be accommodated in even a narrow piston rod.

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 sensor for measuring the speed and/or position of a piston in relation to that of the cylinder it moves inside of in a dashpot of shock absorber for motor vehicles. The sensor consists of a permanent magnet (10) connected to the cylinder (1) and of a sensor winding (9) in the form of a cylindrical coil that operates in conjunction with the magnet. The sensor winding has leads at the ends. Additional leads for a shorter winding component (7 and 8) extend out separately upstream of the ends of the sensor winding.

Abstract: A jack with a foot resting on the ground and with a supporting plate that rises away from the foot, lifts the vehicle, and pivots around one or more articulations on a supporting component around an axis paralleling the length of the vehicle. The object is to make it possible to compensate for tilting along the vehicle without causing unilateral stress that could damage the bottom of the vehicle with local pressure. The jack accordingly has at least one support (17) on or between the articulations (15 and 16) and between the supporting plate (8) and the supporting component (3), and the articulations allow a limited pitch paralleling the length of the vehicle on the part of the plate.

Abstract: A sensor for and method of continuously detecting the instantaneous position of a piston in the cylinder of a dashpot with a protective cover, for motor vehicles. The sensor consists of a cylindrical coil (9) accommodated on or in the cover (3). The coil constitutes in conjunction with the magnetizable cylinder (1) a variable inductive resistor (12). The inductive resistor is connected in series with an ohmic resistor (13). The series is subjected to a pulse voltage. The voltage drop over either resistor is rectified and measured and employed as a reference for the position of the piston (7) in the cylinder (1). The method in accordance with the invention supplies signals proportional to the stroke traveled by the piston, position signals for level control, and, by way of differentiation, signals representing motion that can be used to control the amount of vibration suppression.

Abstract: A method of controlling the resilience of a vibration suppressor for motor vehicles with variable valves. The controls (RG) generate a parameter (I) for varying the resilience (D) and distinguish between once-only and periodic roadway excitation (x.sub.E), whereby the controls parameters are the detected difference in speed between the body mass (m.sub.a) and the wheel mass (m.sub.R) along with either the body acceleration (a.sub.a) or the body speed (v.sub.a).