Abstract: A hydrodynamic retarder for vehicles with an internal working circulation within a working space between at least one rotating and one fixed blade wheel and with an external cooling circulation, whereby the filling of the working circulation takes place from a filling cylinder actuated by a pressure medium, whose actuation is controllable by an actuating device such as a hand brake lever by means of a control valve; a relay valve is thereby arranged in the pressure medium inlet line which, in its turn, is controllable by the actuating device by means of the control valve.

Abstract: A pneumatic central locking mechanism for doors and/or hinged covers of automotive vehicles wherein one pneumatic operating member is provided at the doors or hinged covers to be locked by the central locking operation for locking and unlocking locking devices associated with such doors and covers. A pump, drivable by an electric motor, produces excess pressure and vacuum with a reversing valve being provided for selectively delivering the excess pressure and vacuum to the pneumatic operating members. The reversing valve is operated by a pneumatic operating member which is pneumatically connected in parallel, by way of a throttle, to the operating members associated with the doors and hinged covers. Two double throw switch arrangements are provided with one of the double throw switch arrangements being actuated by the further operating member.

Abstract: An idling speed adjusting mechanism for injection pumps in which a pivotal connection for raising the idling rotational speed is adjustable against a spring force by way of an adjusting mechanism arranged externally at the pump housing and adjustable against the spring force. The adjusting mechanism includes an adjusting motor formed in particular by an expansion element which is extensible with a temperature increase in the spring prestress direction. The adjusting motor is connected with the pivotal spring connection by way of an intermediate member displaceable between abutments fixed at the housing. The intermediate member, in turn, is spring-loaded with a temperature increase opposite the extension direction of the adjusting piston of the adjusting motor.

Abstract: An adjusting mechanism for the rotational speed-dependent control of the injection instant of an injection pump of internal combustion engines, with a primary part driven by the crankshaft and with a secondary part rotatably connected with the pump shaft and with the return springs supported, on the one hand, at guide members of the primary part and, on the other, at guide members of the secondary part; the return springs, with increasing rotational speed of the adjusting mechanism, act opposite the flyweights guided between the guide members; within the lower rotational speed range, at least one return spring which is disposed opposite at least another return spring installed under prestress, has a play between the guide members between which it is supported.

Abstract: A servo-steering mechanism with a steering nut threadably movably connected with a steering worm and being supported with respect to the working piston of a servomotor to be rotatable and also axially movable by way of compression springs in directions of the steering worm axis. The steering nut is additionally supported in the directions of the steering worm axis with respect to the working piston by way of at least one hydraulic support connected with a hydraulic system of the servomotor of the servo-steering mechanism.

Abstract: A multi-cylinder internal combustion engine with a valve shutoff. A mechanical device in which is integrated a valve clearance compensation arrangement, is interposed between an end of the valve stem and the valve actuating arrangement. A mechanical device includes a cup tappet and serves respectively arbitarily in one case as a rigid connecting member between the end of the valve stem and the valve actuating arrangement and, in the other case, during a closed position of the valve, eliminates the connection between the end of the valve stem and the valve actuating arrangement.

Abstract: A pressure medium brake system for vehicles with an electromagnetic control valve for forming a brake control pressure that increases with an increase of the energization of the coil of the electromagnetic control valve. The control valve produces a pilot control pressure which decreases with an increase of an energizing current while a modulating converter, which supplies an adjusting force that is dependent on the difference between the pilot control pressure and an essentially constant comparison pressure and that increases with an increase of the energizing current, adjusts by means of its adjusting member the brake control pressure.

Abstract: A locking rail supported on a fixed vehicle part for a lever pivotally connected to a seat frame of a longitudinally and vertically adjustable automobile seat. The lever receives one end of a safety belt system with a lower free end of the lever lockingly engaging the locking rail when a predetermined tensile stress on the belt strap is exceeded. The locking rail is rigidly attached to parts fixed to the vehicle such as, for example, the seat underframe and the vehicle floor. The lever is connected to the seat frame by way of a fishplate which is mounted on both sides in an articulated fashion.

Abstract: A bellows connection adapted to be disposed between a front and rear section of an articulated vehicle. The bellows connection includes a first and second bellows part with at least one of the bellows parts being mounted on an end frame of one of the sections of the articulated vehicle. Both of the bellows parts are connected to each other by a portal-like bellows yoke which is saddled-mounted to the front section in a ball joint at the bottom so that it is omnidirectionally pivotable. A lemniscate control arrangement is provided for guiding the bellows yoke along a bisecting line of a bending angle between the front and rear sections of the vehicle. To provide for additional guidance and support of the bellows yoke two struts are provided in a roof area of the vehicle in a vicinity of the central longitudinal axis thereof. The struts are articulated to the front or rear sections of the vehicle and to the bellows yoke.

Abstract: A position-variable belt articulation apparatus for safety belts, especially for the upper, body-mounted pivot of three-point safety belts, having a clamping element adjustable along a guide, with at least one belt holder being associated with the clamping element which is tensioned against the guide by the belt as a function of the stress on the belt. The clamping element is guided in a longitudinally adjustable manner and is swivelable about an axis transverse to the direction of longitudinal adjustment. The clamping element, in one embodiment, can have clamping jaws which cooperate with the guide and which are associated with the belt holders. In another embodiment, the two clamping jaws are articulated to one another and have curved clamping surfaces for gripping the guide firmly therebetween to keep the clamping element at the appropriate height.

Abstract: A switching means for effecting a shutoff of valves of a multi-cylinder internal combustion engine wherein a servomechanism is provided which, upon a shutting off of the valves, acts upon an interposed energy storage arrangement in such a way that a spring-loaded leading mass of the energy storage arrangement, after a predetermined lead path, entrains an element connected with adjusting members for shutting off the valves.

Abstract: A hydraulic brake pressure control installation with a master brake cylinder actuatable by a plunger of the pedal. The plunger acts on the master brake cylinder by way of a piston rod of an adjusting cylinder which is arranged ahead of the master brake cylinder and which includes a connecting nipple on the side of the adjusting cylinder piston facing the brake pedal, with which a feed line leading to an electro-hydraulic two-stage control valve is connected. The control valve is adjusted by a control signal, and is operable to connect the feed line with either with a supply pressure line or with a pressureless return line.

Abstract: An airbag system for protecting the occupants of an automotive vehicle during collisions, the airbag system including airbags for the driver and front-seat passenger, and a sensor system for detecting the increase in deceleration of the vehicle during a collision and for triggering controlled inflation of the airbags in accordance with the detected increase in deceleration. The airbag associated with the front-seat passenger being inflatable in two stages, the first inflation stage being triggerable in response to an output signal from the sensor system generated when the detected increase in deceleration is equal to or greater than a first threshold value, and the second inflation stage being triggerable in response to an output signal from the sensor system generated when the detected increase is equal to or greater than a second threshold value which is higher than the first threshold value.

Abstract: An actuating installation for working medium valves in reciprocating engines with at least one cam shaft and one cam each for each valve and with at least an indirect actuation of the valves by the corresponding cam, and with hydraulic play-compensating elements, each of which is provided with one working space filled with lubricating oil that is connected to the oil circulatory system of the reciprocating piston engine; the place of the hydraulic connection of the play-compensating elements with the oil lubricating system is located at such a place in this circulatory system, at which the oil circulatory system has a pressure, conditioned on the system, which at all operating conditions lies below the feed pressure of the circulation but above the atmospheric air pressure of the reciprocating engine.

Abstract: A motor vehicle bumper consisting of an approximately U-shaped relatively elastic base body, of an apron made of elastic plastic material which covers the forwardly disposed web of the base body and is drawn around up to the flanges adjoining the web on both sides, and of a cover constructed as decorative strip and covering at least the remaining visible part of the upwardly disposed flange; the cover is thereby pivotally connected with the base body exclusively by fastening elements disposed substantially in the axial direction of the two bumper supports while the upper flange is surrounded at the end face by clamps formed out of the cover within the area of the bumper supports and possibly also within areas displaced outwardly with respect thereto.

Abstract: A locking mechanism for lids, hoods, flaps and/or doors, especially in motor vehicles, which cooperates with a cylinder lock whose lock cylinder is provided with a lock part adapted to be pressed-in against the force of a spring. The lock part includes, at its cylindrical outer surface, a pressure pin which is swung by rotation from an operating position to a non-operating position. In addition to the pressure pin, a lug is arranged at the outer surface of the lock part adapted to be pressed-in. The lug is operatively connected with an additional locking mechanism in such a manner that the additional locking mechanism becomes operable only over a limited rotary range of the lock cylinder adjoining the inoperable position of the pressure pin--as viewed in the locking direction.

Abstract: A brake valve for a control piston actuatable at will, which shifts a double valve by way of a spring that closes off a flow connection between a working pressure space and a supply reservoir for pressureless brake medium and which during the further movement opens up the inlet between a pressure storage device containing a brake medium under pressure and the working pressure space. A closure member constructed spherically within its sealing area, which together with a stem mounted thereon forms a valve body, is tied to a valve piston by way of this stem in such a manner that the valve member is connected in its longitudinal direction with the valve piston but is radially freely movable with respect thereto to thereby assure centering of the valve member with respect to the valve seat.

Abstract: A method for manufacturing an iron-containing sintered electrode for alkaline accumulators as well as the product obtained by such method, in which iron powder and at least one reducible iron compound are intimately mixed with each other; the powder mixture is sintered into a stable body and the reducible iron compound is reduced to highly active iron.

Abstract: In an installation for the catalytic decontamination of exhaust gases of internal combustion engines, especially of motor vehicle internal combustion engines, in which a preferably cylindrical catalyst-monolith is supported in a corresponding housing under interposition of radially elastic elements, the housing is thereby detachably connected at least at one open side with an adjoining pipe or structural part and each monolith is inserted from that side into the housing by means of a separate insert housing and is then axially fixed by the detachable pipe or structural part.