Abstract: A pneumatic spring for motor vehicles which includes two supports as well as closed spring volumes and two spring surfaces of different sizes which surfaces are subjected to pressure in opposite directions and which are variable as a function of road clearance. The surfaces are supported coaxially against one another with the spring volume being formed by two roll bellows defining a common chamber. Effective spring surfaces of the bellows facing away from each other are supported upon spring pistons of different diameters which are connected together. The spring pistons and a casing associated with the roll bellows form the two supports.

Abstract: A bumper formed by a rigid support of U-shaped cross section and a resilient guard covering it, with the guard having approximately horizontally aligned guide bars which rest against parallel legs of the rigid support and interact in a reinforcing manner with holding fixtures of the rigid support. For purposes of safe assembly and avoidance of overstressing the guard, additional horizontally-running cross bars are located at a vertical distance from the guide bars and include portions that protrude beyond the support. The protruding portions of the cross bars are connected to each other by means of a fastening link.

Abstract: System for routing stereo radio frequency signals over alternate audio channels in response to detection of an interference in one of the stereo signals. The system delays the radio signals during which time it detects whether an interference has corrupted one of the radio signals. If a corruption has occured, the system switches the non-corrupted signal to an active one of the audio channels so that the interference is prevented from being reproduced prior to reaching an audio output.

Abstract: An overload protection for presses in which the working stages are protected against overload by balance-like overload pressure-responsive devices; to further protect the press balance-like adding pressure-responsive devices are also used whose operating point adjusted to the limit loads of the connecting rods is adjusted to a smaller value than the sum of all of the balance-like overload pressure-responsive devices; the adding pressure-responsive devices are connected in parallel since the pressure space of each balance-like overload pressure-responsive device is connected to one pressure space each of each adding pressure-responsive device; the cross sectional areas of the pistons of the balance-like adding pressure-responsive devices are calculated from the distance of the working stages to the actuating planes; for the left adding pressure-responsive device, from the distance of the working stages to the right actuating plane whereas for the right adding pressure-responsive device, from the distance of th

Abstract: A clamp structure especially for use in applications in which space conditions do not permit any projecting parts such as plastically deformable ears, and in which outwardly extending hooks adapted to engage in apertures are used to mechanically interconnect the clamp structure; to enable tightening of the band about an object to be fastened, cold-deformed pressed-out embossments are provided in inner and outer band portions, which extend generally in the circumferential direction so that each pressed-out embossment remains integral at least on both sides thereof, where the tool-engaging surfaces thereof are able to withstand very large tightening forces in the circumferential direction which permit a secure tightening of the clamp structure.

Abstract: An installation for fastening a lower edge area of a top cover at a rear frame of a motor vehicle includes a fastening arrangement and a cover covering the fastening arrangement. The arrangement provides a structural simplification and an improved seal between the top cover and the rear frame. The installation includes a rail angularly shaped in cross section, whose first leg facing the passenger space serves as cover member and for fastening at the rear frame, while the second leg that extends approximately parallelly to the lower edge area of the top cover, is designed and constructed for the retention of the lower edge area and of a sealing member provided between the rail and the rear frame.

Abstract: An electronic current overload protection device in which an applied voltage is divided into the voltage across the load and the current-proportional voltage drop at an MOS transistor of a circuit that includes the load and the MOS transistor whose resistance is exactly linearly proportional to the current; this voltage drop is applied by way of a delay circuit to a threshold switch that controls the gate input of the MOS transistor by way of a driver stage; the threshold of the threshold circuit is adjustable corresponding to the current to be protected against.

Abstract: An actuating mechanism, for putting into operation a ram-air turbine of an aircraft, includes a slide member linearly moveable and connected with a Bowden cable which is actuatable in dependence on a blocking mechanism. In order that the actuating installation can be operated in a simple and safe manner, the blocking mechanism is connected with a hand lever which in the opened condition releases the blocking mechanism and cooperates with a support element of the slide member in such a manner that the slide member is adapted to be displaced into an end position by means of the hand lever.

Abstract: An assembly providing lateral protection for motor vehicles, in which at least one reinforcement, extending essentially in the vehicle longitudinal direction and preferably constructed as hollow bearer, is arranged inside of each of the doors and the lower area of the doors is constructed so as to form-lockingly engage with the door threshold bearers. The reinforcement is so arranged that the orientation of a force flow starting from the reinforcement takes place, in case of a lateral impact in the direction toward the door threshold bearer so that the latter is utilized for the dissipation of impact energy, and particularly when the lateral impact takes place above the same.

Abstract: An electromagnetic two-stage clutch for the driving of units, especially refrigerant compressors in motor vehicles. The clutch includes electromagnets and a drive disk. The drive disk is adapted to be frictionally engaged by driving a shaft of the unit with the aid of electromagnets through armature disks, selectively, by two pulleys of differing diameters. The pulleys are connected with a counter pulley by way of V-belts. The drive disk is mounted in a supported fashion in a neck of the unit and is arranged between the two pulleys. One pulley is supported on the outside or outer surface of the neck of the unit.

Abstract: A blade holding arrangement for cutter spindles or cutter heads which are adapted to be equipped with reversible blades. The arrangement including radially adjustable blade holders in the form of drawn profile sections, with the blades adapted to be pressed against guide shoulders of the cutter spindles or cutter heads. The blade holders are provided with a reinforcing elevation or projection that slopes downward in a direction of the guide shoulders. A groove, extending in parallel to the reinforcing elevation or projection, is provided in the blade holder adjacent the reinforcing elevation or projection on a radially inner side of the blade holder.

Abstract: A convertible top for a passenger motor vehicle, with the convertible top including a top covering, longitudinally extending side members, and a main bow. The main bow is coupled to the body portion of the motor vehicle and is connected by an articulated lever system to the longitudinally extending side members, with the top covering, in an area behind the main bow resting on at least one reinforcement bow. To reduce the number of components and prevent the generation of wind noises, the reinforcement bow is spaced from but attached to the main bow and a rigid form-unit is interposed between the main bow and reinforcement bow, with the top covering resting on the rigid-form unit.

Abstract: An apparatus and a process are disclosed making it possible to mount, without disadvantages, relatively hard particles, such as diamond dust and the like, on wire-like base material in such a way that the diamond dust is not damaged, wherein any desired coating, that is, especially also a coating coherent over the length of the wire, can be produced. This coating is at least macroscopically homogeneous in character. In such a process for the application of relatively hard particles to a circular wire-like form or a wire-like form without longitudinal edges, for the purpose of producing a plain or multiple saw, the form is coated under pressure with the aid of a surface of two rolls. This surface is at least partially provided with the particles to be applied. The wire-like form is turned about its longitudinal axis during this process. The form must be present in the straight, that is stretched, condition.

Abstract: An internal combustion engine of Otto-type of construction with an ignition distributor and with an electronic ignition point-performance graph storage device, which is connected to a fuel tank provided with a filler pipe by means of a fuel line; in order that an automatic adaptation of the instantaneously tanked type of fuel is possible, the ignition point-performance graph storage device is connected with a pulse transmitter coordinated to the filler pipe whereby the pulse transmitter cooperates with a device of a filling nozzle signalling the fuel quality so that the performance graph of the ignition point-performance graph storage device is matched to the octane number of the instantaneously tanked fuel.

Abstract: A hydraulic coupling which includes a primary coupling part having a pot-shaped pulley or sheave, and a secondary coupling part including a housing provided with a cover. The primary and secondary parts are supported relative to one another in such a manner that they can rotate and the pot-shaped pulley or sheave is located in a working compartment formed in the housing. The working compartment is connected by way of a recycling arrangement, including a bore in the cover, to a supply channel to enable a recycling of the coupling fluid. A circumferential surface of the pulley or sheave is provided with spiral or thread-like grooves. At least one baffle or dam body is provided in order to pump off the coupling fluid from the working compartment. The housing is provided, in an interior thereof, with a circumferentially extending channel having an axial length or width when extends over a portion of a depth or axial length of the pulley or sheave.

Abstract: A fuel injection system for a multi-cylinder aircraft engine in which, in order to secure the fuel supply, a pressure-measuring device is connected to the feed line leading from the fuel tank to the fuel quantity distributor, into which are installed two parallel fuel pumps and a fuel filter; this pressure-measuring device in case of a predetermined pressure drop switches on the fuel pump which previously was not in operation; in case of an excessive pressure difference at the fuel filter which is measured by pressure-measuring device upstream and downstream of the filter, an electromagnetic valve installed into a bypass line to the fuel filter is opened; the soiling degree of the fuel filter is indicated by a hydraulically actuated difference pressure-measuring device with pressure limitation.

Abstract: A method and apparatus for manufacturing a multi-component yarn as well as a multi-component yarn produced thereby, in which staple fibers and at least one endless yarn are combined with each other in a defined manner such that a wrapped yarn will result which purely externally has as far-reachingly as possible the properties of a pure staple fiber yarn; the sliver and the endless yarn or yarns are fed separately to a feed roller pair, are combined thereat travelling at the same velocity and parallel to one another, and are subsequently exposed together to a false twist and finally wrapped by a fine-count binding yarn; the predominantly nonvisible part of the wrapped yarn is constituted by the endless yarns which render the yarn bulky with relatively low material expenditure.

Abstract: A wire saw which is simple in construction and which, in practice, can effortlessly handle workpieces of any dimensions, yet requires relatively little space, in particular with diamond chip studding on the reciprocating part of the saw wire; the wire saw includes two reels provided with thread-like grooves and arranged on respective shafts for receiving the finite saw wire whereby each reel is operatively connected with a rotary drive in such a manner as to assure synchronization in the direction of rotation and rotational speed; the sawing place is thereby located between the reels.

Abstract: A system for controlling the propulsion on motor vehicles which not only enables the output torque of the drive unit of the vehicle to be utilized in an optimum manner in critical driving situations, especially under extreme road conditions, but also endows the vehicle with good stability and enhanced driving safety. A comparator is provided, in a propulsion control system which is triggered by at least one presettable or permanently preset threshold value of the speed of the vehicle, and generating an output signal causing the drive torque to be reduced, as soon as this threshold value is exceeded and a signal is present, which indicates that an individual wheel brake is being activated and/or that one of the driven wheels is tending to spin. The threshold value of the speed of the vehicle, which value governs the control process, is preferably regulated in accordance with the transverse acceleration which acts on the vehicle whenever it follows a curved path.