Abstract: To make a sealing and guiding packet available to shock dampers in order to minimize or even entirely prevent the negative effects of the so-called stick-slip effect and thus permit greater riding comfort, a sealing and guiding packet is proposed which comprises the following features: a) A cylindrical gasket (6) surrounding an oscillating piston rod (10) and in contact with the latter, which has a first and a second end face (6a, 6b) and a cylindrical mantle surface (6c), b) a cylindrical elastomer element (7) surrounding the ring (6), which has two radially extending flanges (7a, 7b), which thrust the ring (6) resiliently against the end faces, and which [elastomer element] has a radially extending third flange (7c) which biases the ring against the piston rod surface; as well as c) tightening elements (1; 1.1, 1.2, 1.3; 4) which in the working state keep the elastomer element (7) under bias both in the axial and in the radial direction.

Abstract: The invention is characterized in that the gas exchange valves of a cylinder are displaced in a displacement unit (15, 34) jointly and independently of the displacement of the displacement devices of the other cylinders. Every displacement unit (15, 34) is associated with separate actuators for actuating the same. Angle of rotation sensors (42, 43) are provided to detect the angle or rotation signals of the crankshaft and the camshaft or any other shaft rotating at half the crankshaft speed. These angle of rotation signals are used to derive the common idle phase of all valves of a cylinder to be jointly adjusted, a control unit (44) effecting the displacement of every displacement unit (15, 34) during said common idle phase.

Abstract: The invention relates to a device for the variable actuation of gas exchange valves for internal combustion engines, wherein at least one cam (2) pertaining to a camshaft (1) mounted in a housing rotates according to the engine speed. The cam (2) first drives an intermediate member (4) which performs a clear oscillating, rotary movement and has a rotational axis (7) that can be displaced in the housing parallel to itself along a curve of displacement (8), said intermediate member comprising a control cam (5) having a lifting region (5b) and actuating an output member (11) that, in turn, actuates at least one valve (13). The aim of the invention is to enable one such device to be reliably controlled.

Abstract: A swiveling motor for a divided stabilizer in an area of a vehicle axle, in which a housing is closed off in a region of its end surfaces by lids. A differential pressure regulating valve located coaxially with the housing and having at least one electromagnet, and two springs of different spring load deflection characteristics directed opposite to one another. One of these springs has a lower spring load deflection characteristic in a region of the electromagnet.

Abstract: A method of manufacturing an entire piston, piston heads for example, especially intended for internal-combustion engines, wherein in an initial manufacturing step a blank that will eventually constitute the piston is preliminarily forged along a prescribed axis, shaping appropriate contours, and wherein in at least one subsequent manufacturing step the preliminarily shaped piston is finally forged along at least one other axis, creating additional contours.

Abstract: A subassembly for the amplitude-dependent absorption of shock, especially in a dashpot for a motor vehicle with a piston and an oscillating piston rod. The piston (3) is accommodated in a housing (2), partitioning the housing into two compartments (4 & 5), and travels up and down inside the housing, radially aligned and axially subject to motion-limiting tension, on the end of the piston rod (1). The object is a simple and reliable subassembly that takes up little additional space. The piston is accordingly axially tensioned between two springs (17 & 18).

Abstract: The aim of the invention is to prevent a detrimental effect on the operation of electric smelting furnaces. To achieve this, a pressure cell (41), which continuously measures the clamping force, is allocated to the actuating cylinder (21) that is responsible for fixing the interchangeable electrode (31) into the electrode support arm (11), said pressure cell continuously transmitting the measured values to a measured value display that is located at a distance from the furnace. This obviates the need for the previous conventional method of checking the current clamping pressure by placing a clamping pressure gauge in the electrode holder, e.g. when the electrode is replaced, without running the risk of a breakdown caused by the detachment of the electrode, triggered by an uncontrolled drop in the clamping pressure.

Abstract: Mechanical controls for continuously varying the length of the stroke of the valves in an internal-combustion engine and for maintaining the valves constantly closed while the engine is in operation while simultaneously varying how long the valve or valves remain open, whereby the valves are actuated by rocker levers that are in turn actuated by an angled lever, whereby the positions of the levers are varied in order to vary the length and duration of the stroke. The valves are actuated at low engine speeds by assigning a specific narrow angle of rotation to each abbreviated stroke to be established. FIG. 1 illustrates valve stroke controls with an angled lever (2) actuated by a cam (17) mounted on a lateral roller (3). In the event of a misalignment, a planetary gear comes into play, wherein a roller (9), mounted on the rocker lever (8) that actuates the valve (1) acts a sun wheel, the angled lever (2) acts as a planet wheel, and a setting lever (5) acts as a planet bearing.

Abstract: An assembly for a hydraulic dashpot. The dashpot is accommodated in an overall housing (1) and provided with a shock-absorbing piston (3) traveling back and forth inside the housing on one end of a piston rod (2) and partitioning the housing into two compartments (19 & 23), and a vibration-compensating piston (11) hydraulically paralleling the first piston and accommodated inside a subsidiary housing (10). The object of is to ensure a solid and reliable connection between the shock-absorbing piston and the piston rod while allowing as much of the piston rod as possible to find support inside the housing. The vibration-compensating piston is accordingly an annular piston and travels back and forth with its inner surface resting against a section (9) of the piston rod adjacent to the fastening for the shock-absorbing piston, and with its outer surface against the inner surface of the subsidiary housing.

Abstract: A hydraulic dashpot for motor vehicles, with a cylinder and a primary piston. The cylinder (1) is charged with shock-absorption fluid. The primary piston (2) is mounted on the lower end of a piston rod (8) and partitions the cylinder into two chambers (3 & 4). The piston rod travels axially into and out of the cylinder. The primary piston is provided with breaches, with shock absorption valves (5) that can vary the cross-section of the breaches, and with a bypass system comprising at least two mutually dependently controlled bypasses between the two compartments. The object of the present invention is to improve a hydraulic dashpot of the aforesaid genus to the extent that the at least two bypass channels, although they can be opened and closed mutually dependently, need not be opened and closed sequentially.

Abstract: A method using high interior pressure to reshape structural section of continuously bounded overall cross-section, whereby the overall cross-section can be provided with extra walls or chambers and a stopper is forced radially against each end of the piece. The object is to reduce wear on the stopper while ensuring that any walls or chambers in addition to its overall crosssection will buckle or bulge only at their ends.

Abstract: The invention relates to a method for producing components with a high load capacity from ?+? TiAl alloys, especially for producing components for aircraft engines or stationary gas turbines. According to this method, enclosed TiAl blanks of globular structure are preformed by isothermal primary forming in the ?+?? or ? phase area. The preforms are then shaped out into components with a predeterminable contour by means of at least one isothermal secondary forming process, with dynamic recrystallization in the ?+?? or ? phase area. The microstructure is adjusted by solution annealing the components in the ? phase area and then cooling them off rapidly.

Abstract: A hydraulic dashpot with a cylinder (1), a piston (4), and a bypass. The cylinder is charged with fluid. The piston partitions the cylinder into two compartments (7 & 8), travels back and forth therein on the end of a piston rod (2), and is provided with breaches and valves. The open cross-section of the bypass can be expanded and contracted and fixed in accordance with the direction the piston is traveling in, depending on whether the dashpot is in the compression or in the suction phase. The bypass is provided with an axially displaceable control component. One end of the control component comes to rest against a valve, its displacement being limited by stops. The bypass is accommodated in an axial bore through the piston rod. The bypass operates in conjunction with various outlets that open into the compartments. The control component is provided with at least one lateral flange and travels back and forth in at least one tube. The object is a smooth performance curve and low wear.

Abstract: Mechanical controls for continuously varying the length of the stroke of the valves in an internal-combustion engine and for maintaining the valves constantly closed while the engine is in operation while simultaneously varying how long the valve or valves remain open, whereby the valves are actuated by rocker levers that are in turn actuated by an angled lever, whereby the positions of the levers are varied in order to vary the length and duration of the stroke. The valves are actuated at low engine speeds by assigning a specific narrow angle of rotation to each abbreviated stroke to be established. FIG. 1 illustrates valve stroke controls with an angled lever (2) actuated by a cam (17) mounted on a lateral roller (3). In the event of a misalignment, a planetary gear comes into play, wherein a roller (9), mounted on the rocker lever (8) that actuates the valve (1) acts a sun wheel, the angled lever (2) acts as a planet wheel, and a setting lever (5) acts as a planet bearing.

Abstract: A shock-absorbing piston for hydraulic fixtures, especially hydraulic dashpots for motor vehicles, and separating two hydraulics chambers. The body of the piston is breached by one or more ports. The end of each is blocked by a resilient or resiliently loaded cap. The object is to improve the flow of hydraulic fluid. The ports (13 & 14) are sickle-shaped and the cap rests eccentric against the face of the piston's body (16).

Abstract: A blow-off valve for a hydraulic dashpot comprising a fluid charged cylinder (1) and a piston (3) that travels back and forth therein on the end of a piston rod. The piston partitions the cylinder into two compartments (6 & 7) and is provided with breaches (4) and shock-absorbing valves. The piston rod (2) or an extension (8) thereof is hollow and accommodates operating components (13). The object is a valve that can be accommodated along with the hydraulic lines that serve it outside the piston rod or an extension thereof. The outer surface of the piston rod is accordingly provided with at least one axial inwardly undulating groove (14) at least as long as the piston, including its fastenings and operating components, is high. Alternatively, the bore that extends through the piston rod or its extension and its fastenings and operating components is provided with a similar radially outward groove that can be closed off at the compression end by a spring-loaded valve.

Abstract: Mechanical controls for continuously varying the length of the stroke of the valves in an internal-combustion engine and for maintaining the valves constantly closed while the engine is in operation while simultaneously varying how long the valve or valves remain open, whereby the valves are actuated by rocker levers that are in turn actuated by an angled lever, whereby the positions of the levers are varied in order to vary the length and duration of the stroke. The valves are actuated at low engine speeds by assigning a specific narrow angle of rotation to each abbreviated stroke to be established. FIG. 1 illustrates valve stroke controls with an angled lever (2) actuated by a cam (17) mounted on a lateral roller (3). In the event of a misalignment, a planetary gear comes into play, wherein a roller (9), mounted on the rocker lever (8) that actuates the valve (1) acts a sun wheel, the angled lever (2) acts as a planet wheel, and a setting lever (5) acts as a planet bearing.

Abstract: A method of fastening at least two large-surface components together by hole-punching rivets, in which the rivets are driven through the components by rivet drivers and against dollies, and fastening the components together. The components rest on supports, and the dollies are a part of these supports; each of the rivet drivers as well as the dollies are guided unfocused to a correct position where a hole-punching rivet is to be placed.

Abstract: A pneumatic-spring wheel-suspension leg for motor vehicles. The leg comprises a bellows (1) that can be rolled up over a jacket (3) and accommodates a pneumatics chamber (9), a hydraulic dashpot inside the bellows or jacket, and a piston rod (5) that travels into and out of the dashpot and is attached axially and resiliently directly or indirectly at one end to the vehicle's chassis. The object is to relieve the dashpot of difficult attenuation tasks when a hard wheel suspension is necessary. The leg accordingly includes another pneumatics chamber (10) and the communication between the two pneumatics chambers can be partly or entirely blocked by a valve.

Abstract: A motion nut for a lifting device, especially a car jack, in which a basic body has an internal thread and a threaded spindle is seated in the internal thread. The basic body together with the internal thread is a single unit component formed of at least two separate material components of different materials. The two separate material components form an internal thread region part and an external part, so that properties of the internal thread region is selectable different from properties of the external part. The properties of the thread being selectable for reduced friction and the properties of the external part being selectable for increased strength and stiffness.