Abstract: A firearm comprises a gas drive for actuating loading and/or firing means in response to the discharge of a round, wherein the gas drive comprises a pneumatic cylinder and a pneumatic piston, the cylinder chamber communicates with the barrel bore through at least one transverse bore in the barrel, and powder gas is adapted to enter said cylinder chamber through said transverse bore and to move said cylinder and piston relative to each other against the force of a return spring. In order to provide a gas drive which is particularly simple and functionally reliable, light in weight and compact, the barrel is provided with a collar or the like, which constitutes a stationary pneumatic piston, and the pneumatic cylinder consists of a sliding sleeve, which surrounds the collar and is longitudinally displaceable between stops.

Abstract: A rotary body adapted to be subjected to centrifugal forces, with the rotary body including a load ring carried by a wheel disk or the like. The load ring is defined between two enveloping or surrounding cylindrical surfaces which respectively define the inner and outer peripheral surfaces of the load ring. The inner cylindrical surface has a diameter D.sub.i with the outer cylindrical surface having a diameter D.sub.a. At least one axially extending vacant bore is arranged in the load ring, with the bore being disposed at a position spaced from a center of rotation of the rotary body by a distance which is less than 1/4 (D.sub.i +D.sub.a).

Abstract: In an anti-blocking system for a road vehicle with statically pressure-actuatable brake circuits, a pressure modulator with an outlet pressure connected with the wheel brake cylinder is coordinated to each wheel brake, whereby pressure reduction-, pressure build-up and pressure-maintaining-phases of the anti-blocking regulation are attainable by its controllable volume change respectively maintaining constant of its volume. The pressure modulators are constructed as stepped cylinders with bore steps of different diameters passing over one into the other, in which a smaller and a larger control pressure space is movably delimited by piston steps of corresponding different diameters of a stepped piston, as well as the outlet pressure space, which is formed by an annular space remaining between the piston steps. The larger control pressure space is permanently connected with the main brake line of the respective brake circuit.

Abstract: The invention concerns a power-assisted lock for doors, hatches hoods or hard tops of vehicles and the like. In addition to a known pivotal latch and a catch for a releasable engagement with the pivotal latch there is a control disc pivotally mounted in the housing of the lock. A manual or power actuated drive means is attached to the control disc for the closing and opening operation. The pivotal latch and the control disc have a drive connection providing for limited play. The arrangement together with the catch leads to a locking of the control disc before a closing operation and an unlocking of the control disc by turning the pivotal latch during the closing operation of the lock. The pivotal latch has the usual pre-lock position.

Abstract: An orthogonally adjustable sight, particularly for rifles, comprises a housing (1), in which a carrier (2) for an eyepiece consisting, e.g., of a peephole sight (3), is mounted for an adjustment in two orthogonal directions. Actuators (4, 5) are provided for adjusting said eyepiece carrier (2) in said two orthogonal directions and are supported in the housing (1). To permit a highly exact adjustment which can easily be effected, the eyepiece carrier (2) comprises a guided plate (6), which has parallel planar surfaces on opposite sides and extends in the plane which is defined by the axes of the actuators (4, 5). The guided plate (6) is adapted to be gripped between two guided surfaces (8a, 9a), which are parallel to the guided plate (6). A polygonal array of balls (7) is interposed between the guided plate (6) and each of said guiding surfaces (8a, 9a).

Abstract: A preassemblable cylinder lock/actuator subassembly of a central locking system is designed so that, at the same time as the actuator is necessarily fastened to a lock carrier in the correct position, the actuating member of the actuator is coupled in a functionally reliable way to a lock operating lever.

Abstract: A piezoelectric control valve, for motor fuel injection via an injection valve, includes a hydraulic play-compensation element inside the control valve on the one side, which automatically compensates for possible changes in length of the reference system as a result of piezoceramic setting actions in the piezoelectric actuator so that, at the same working stroke of the piezoelectric actuator, an identical stroke at the valve is also always ensured. A hydraulic stroke transmission inside the control valve on the other side, provide a valve stroke corresponding to a multiple of the working stroke.

Abstract: A windshield wiper installation in which at least one nozzle of a windshield washing system partakes in the pivot movements of the wiper arm. In order to avoid with certainty a scratching of the windshield, provision is made according to this invention that the washing liquid is sprayed in a focused jet from the base of the wiper arm directly along the wiper blade to the free end thereof on the forward side of the wiper blade as viewed in the respective wiping direction.

Abstract: In an automatic shift of an epicyclic change-speed gear, engagement of a reverse gear brake used to shift to reverse gear is blocked until a forward gear clutch used to shift at least one forward gear is disengaged by using the working pressure of the forward gear clutch as a blocking pressure to stress a blocking control element acting upon the valve used for engaging the reverse gear brake.

Abstract: A compact electric adjusting drive for locking systems, fan flaps or the like in motor vehicles includes a fluidic force transmission system between the electric motor and the adjusting element movable to and fro between two end positions.

Abstract: A vehicle door or body section, especially for a passenger motor vehicle with a door body or body section made essentially of an outer and of an inner body panel and with a window arranged above the same which essentially consists of an approximately rectangularly shaped vertically displaceable side window and an adjoining approximately triangularly shaped window part, whereby for purposes of opening the window the side window and the window part can be lowered completely into the door body or body section in that the window part is pivotal within the area of its corner opposite the side window about an axis arranged approximately perpendicularly to its window plane; the side window and window part extend thereby in a common plane and the side window is provided within the area of its upper corner facing the window part with an inclination in such a manner that in the lowered condition of the side window and of the window part, the front edge of the window part extends adjacent the inclination at a distance w

Abstract: A coated valve, in particular an inlet valve for internal combustion engines, is provided, which is provided with a deposit preventing layer containing cerium (IV) oxide. A process for coating a valve with the deposit preventing layer containing cerium (IV) oxide is also provided.

Abstract: A drive unit comprising a reciprocating-piston type internal combustion engine and a transmission and output shaft is disclosed in which the sound-generating parts of the internal combustion engine are combined to form one driving mechanism body which is supported via an element which transmits power and isolates structure-borne sound, at the engine casing constructed as a noise capsule. To prevent sound from being radiated from the transmission casing towards the outside and structure-borne sound from being transmitted to the noise capsule, the transmission casing is rigidly connected to the driving mechanism carrier and the noise capsule also encloses the entire transmission casing.

Abstract: Control for the automatic locking of the transfer transmission of a motor vehicle equipped with a multi-axle drive, having a wheel slip control system for the wheels of one axle and having an electronic unit that carries out a comparison of a quantity determined from the steering angle and the rotational speed difference of the wheels of the other axle that characterizes the moving condition of the motor vehicle with a limit value assigned to the steering angle and the driving speed. Control signal for the lock of the transfer transmission is generated when a control signal of the wheel slip control system is present or the quantity characterizing the moving condition of the motor vehicle exceeds the limit value.

Abstract: A heat-insulating lining for a gas turbine which consists of a mat formed of ceramic fibers that is provided on its side facing the hot gas with a metal-oxide-containing layer, especially Al.sub.2 O.sub.3. The mat to be provided with the ceramic layer should possess a gross density of 350 to 450 kg/m.sup.3 and the fibers in the mat which are in contact with the metal oxide-containing layer are to be predominantly so oriented that the longitudinal axis of the fibers forms an angle of 30.degree. to 90.degree. with the metal oxide-containing layer. It is preferred if the fibers form an approximately right angle with the metal oxide-containing layer. The thus made coated heat-insulating linings possess a good mechanical stability with respect to the hot gases as well as an adequate thermo-shock resistance.

Abstract: A device is provided for reducing the engine torque when shifting up a change-speed gear transmission connected downstream of an internal combustion engine. A final control element for influencing the engine torque is connected to a control circuit and causes a reduction in the engine torque only in the full load range of the internal combustion engine and only above a limit value of the negative changes in engine speed over time. Comparator circuits for positive changes in speed over time are connected to the final control element such that the reduction in engine torque is blocked above a limit value of the positive changes in speed over time. In this way, overshoots triggered by positive changes in speed over time cannot result in a reduction in the engine torque.

Abstract: A motor vehicle comprises at least two driven axles (2, 5). One (5) of said axles can be disconnected from the prime mover (1). In order to prevent a swerving of the vehicle without a need for interrupting the transmission of power to one (5) of the driven axles (2, 5) during each braking operation, the vehicle is provided with a sensor (6) for measuring the angular acceleration of its yawing movement. In response to a rise of the angular acceleration to a predetermined value the sensor (8) causes a clutch control means (15) to disconnect one driven axle (5) from the prime mover (1), or operates means for effecting a pressure drop in the brake system.

Abstract: A seat shell for a motor vehicle seat which includes a channel extending along each lateral edge of the seat shell from a front of the seat shell to a top of a back portion of the seat shell. The channel is provided with fittings for receiving fasteners. To increase the strength and ensure easy fastening of the fittings, the channel projects from a rear side of the seat shell and receives the fittings in a bottom portion thereof. The channel is closed on a front side of the seat shell in such a manner so as to form a continuous surface therewith.

Abstract: The cover of a rigid sliding roof is sealed against the solid roof region around it by means of a peripheral hollow chamber seal, a bead of this seal being only locally in contact with protrusions which are formed at the front of a rail fixing the hollow chamber seal. So that an adjustment procedure can be carried out in the case of a lack of pressure effect or in the case of too much pressure effect by means of tools, one appropriate to each case, each protrusion is aligned with and at a distance from a penetration which can be plastically deformed so that in each case the protrusion is moved towards or away from the penetration.

Abstract: A seat-contact switch for generating a "seat occupied" signal is combined into a compact constructional unit with an axially resilient actuating device, which extends in a straight line between the seat suspension and the seat frame and which automatically compensates for elastic and permanent deformation or settling phenomena of the seat suspension resulting in a reduction of its unloaded length and which utilizes an adjusting screw connected between the seat and seat frame which screw causes adjustment of the point of make-break contact for the "seat occupied" signal.