Abstract: A cylinder block for an internal combustion engine which includes dry liners each having a flange, and in which cooling slots are provided between two cylinders that start from the separating plane facing the cylinder head and are in communication with the cooling water circulation; the wall thickness of the cylinder block between two cylinders is thereby so dimensioned that the circumferential surfaces of the flanges at the liners are either tangential with a cooling slot; or with larger flanges in the radial direction, the flanges abut at one another above the cooling slot.

Abstract: A soldering foil having a multi-layer structure for the stress-free joining of ceramic bodies to metal is described along with a process for making the foil. The soldering foil contains two layers of an active solder, particularly a Cu/Ti solder, provided with an intermediate cushion layer, preferably of copper, which absorbs the stresses. Between the copper cushion layer and the active solder layers barrier layers of silver are arranged which are very thin in relation to the copper and solder layers. The soldering foil permits a low-stress and extremely durable connection to be established between metal and ceramic, simultaneously permitting relatively large deviations in the temperature and time parameters of the soldering process.

Abstract: In wheel suspensions of automotive vehicles, equipped with a wheel suspension system comprising a coil spring, a specific mutual association is required for functional reasons for the individual components of the wheel suspension, forcing constructional compromises in connection with the other structural conditions inherent in the design of the vehicle. In order to be able to avoid in such cases expensive compromise solutions, it is disclosed to have one or several vehicle components, to be correspondingly correlated with the coil spring, project in between turn portions of a spring turn that has a larger lead as compared with the regular lead of the coil spring, or pass such components through the expanded spring section of the coil spring.

Abstract: A headrest is provided which is vertically displaceable by means of remote control and which is supported in rails and sliding members for receiving individual headrest support rods, at least one support rod is engaged releasably at its free end by a coupling which includes a spring engagement means and which projects from the top end of a rack extending in the supporting rail. This rack meshes with a gearwheel which is accommodated in a housing connected to the rail and guiding the rack.

Abstract: A thermometer is provided which is insertable between two lamella of a heat exchanger. The thermometer exhibits a double channeled insulated pipe or tube for receiving the uninsulated leads which are connected to a temperature sensitive resistance at a supporting connection with a cap surrounding a heat conducting mass. The other end of the double channeled tube is inserted into a connector device which in turn leads to a relieved connecting cable.

Abstract: A gas and fluid sealing connection and process for making same are disclosed for connecting between a synthetic resinous material/plastic material body and a metallic body which is embedded therein by flowing the synthetic material in a form under pressure. The metallic body has at least one circumferential groove at its outer side. At least one of the grooves disposed in the region of the plastic to be embedded there is disposed and carried an elastomeric ring which fills the groove in the axial direction and the groove is so shaped that the ring is left with an expansion gap space in the region of the groove bottom. Alternative embodiments dispense with the expansion gap space and utilize a ring which is formed out of closed pore elastomeric foam.

Abstract: A low overall height is provided in a wiper-arm assembly with a wiper arm which has a fastening part, a link part which is swivelably linked to the fastening part and two side walls and a back connecting the two side walls, and a contact pressure spring which is accommodated in the link part and acts on the link part and the fastening part, and also with a wiper blade linked to the wiper arm, which blade lies at least partly in line with the link part. The low height is achieved by making the clearance between the contact pressure spring and the one side wall of the link part greater than the width of the wiper blade in the area of the link part and by the wiper blade being swivelable into the link part alongside the contact pressure spring.

Abstract: In wheel suspensions for automotive vehicles, equipped with a wheel suspension system comprising a coil spring, a specific mutual association can be desirable for functional reasons for the individual components of the wheel suspension, forcing constructional compromises in connection with other structural conditions inherent in the design of the vehicle. In order to be able to avoid in such cases expensive compromise solutions, it is disclosed to form the coil spring of two series-connected individual spring ends mutually supported against each other by way of a bridge member, at a spacing from one or several vehicle components.

Abstract: An exhaust brake system for internal combustion engines includes an exhaust valve within the exhaust duct which is closed or opened for the braking of a vehicle during engine operation by means of an engine brake valve. A magnetic valve is arranged within the control duct and is controlled by an electrical circuit connected to a terminal of the ignition switch and to the positive terminal of the generator in such a manner that the exhaust valves are closed during the starting of the engine and when the engine is idling. The formation of white exhaust smoke during cold starting of the engine and the formation of blue exhaust smoke during idling of the engine is decreased.

Abstract: A rifle breech assembly comprises a housing adapted to receive the barrel at one end and slidably to receive the breechblock at the other end. The latter carries at its forward end locking bosses, and the housing is formed with grooves which receive the locking bosses and open into an annular recess defined by the rear end of the barrel and permitting a rotation of the breechblock. The breechblock is provided with a resilient pivotally movable extractor disposed between two locking bosses and terminating in an extractor hook. The inside surface of the housing wall constitutes adjacent to the annular recess a surface for radially supporting the extractor hook when the breechblock is locked. A recess which permits a pivotal movement of the extractor is disposed beside that supporting surface in the peripheral direction.

Abstract: At least one closed container filled with neutralizing substances is arranged inside of an automatically inflatable gas cushion designed for the protection of the passengers of motor vehicles. The gas cushion is generally filled in a pyrotechnical manner by the use of gases and the release of the substances in the closed container is for the purpose of neutralizing these gases which may lead to the annoyance of the passengers when flowing into the vehicle passenger space.

Abstract: A vacuum control system for devices in vehicles is disclosed, such as for controlling air-conditioning and heating equipment. Temperature-sensitive control valves which are inserted in the cooling-water circuit of an internal-combustion engine are automatically operated at a specific temperature to control a pneumatic actuator located vacuum control circuit for the devices.

Abstract: A device for the production of a fuel vapor/air mixture for spark-ignition engines comprising a float chamber and a vaporizer chamber with heated vaporizer surface, an intake pipe being provided with a first fixed diaphragm or nozzle, the liquid spaces of the vaporizer chamber and of the float chamber being connected to each other by means of a line, the gas space of the float chamber being connected upstream of the diaphragm or nozzle, viewed in the direction of flow, and the gas space of the vaporizer chamber being connected downstream of the diaphragm or of the nozzle, viewed in the direction of flow, to the intake pipe, by means of lines in each case, and the line from the gas space of the vaporizer chamber into the intake pipe being provided with a second fixed diaphragm or nozzle, which induces a pressure drop of 85 to 99.

Abstract: An installation for the actuation of several controllable elements with modulated pressures, whereby the elements are constructed in particular as air chambers accommodated in the upholstery of a motor vehicle seat; the installation consists of only one pressure modulator and of a distribution device series-connected therewith; the pressure modulator is adapted to be selectively connected with one or several of the controllable elements by way of this distribution device.

Abstract: A rear sight, particularly for a pistol, comprises a sight plate carrier and a sight plate, which is mounted in the sight plate carrier and is vertically and laterally adjustable. To provide a rear sight which is structurally simple and has small dimensions, the sight plate carrier is nonadjustably secured to the firearm, particularly at its breech, and is formed with a groove, in which the sight plate is guided for vertical and lateral movements. Two transverse adjusting screws extend from the end faces of the sight plate carrier into the latter and are screwed into the sight plate and serve for a lateral adjustment thereof. A vertical adjusting screw is provided, which crosses the transverse adjusting screws at right angles thereto and is adapted to be screwed into the firearm, particularly at its breech, and has a head, which extends into a slotlike opening formed in the sight plate.

Abstract: This invention relates to a frame for two-wheeled vehicles, comprising two die-cast light metal semimonocoques adhesively joined at their adjoining edges which are longitudinally profiled. The edges are interengaged and semimonocoques are additionally held together by rivets, screws and/or pins inserted into abutting bosses integrally formed on the insides of the semimonocoques.

Abstract: A surface heat-exchanger body for vehicles, aircrafts or ships, with an interconnected heat pipe-channel system which is hermetically closed and arranged distributed over an area; as a result of a separate line-shaped heat source which extends along the heat-exchanger body and which may be formed by a heating channel, a heating rod or the like, heat is supplied to the heat-exchanger body which is distributed and given off by the heat pipe-channel system to the adjoining space with a slight temperature drop inside of the heat-exchanger body; for a horizontal installation of the heat-exchanger body, intersecting or star-shaped channel sections are provided inside of the heat pipe-channel system which always return the condensate to the condensate collector independently of the direction of the resultant of gravity and inertia forces; the condensate collector may be constructed in the form of a closed annular line either concentrically on the inside of the surface heat-exchanger body or along the outer edge; to

Abstract: The use of an alloy composed of 15 to 19% by weight of Cr, 5 to 32.5% by weight of Mo, 0.3 to 10% by weight of Si, up to 10% by weight of Al and up to 4.5% by weight of Ti, the remainder being Ni, as a sliding material for seals on rotary regenerative heat exchangers with a ceramic core is described. The sliding material is suitable especially for use in temperature ranges up to about 1100.degree. C.

Abstract: The application relates to an apparatus for discharging hot air generated by an internal combustion engine from the engine compartment of motor vehicles, particularly private motor cars or estate cars, which include front quarter panels extending along the sides of the engine compartment and inner fenders providing front wheel wells. In order to develop an arrangement of this kind so that it will have the simplest possible, weight-saving construction and so that air outlet apertures can be concealed, the present invention discloses that in the region of the engine compartment, air inlets are provided leading into a cavity formed by the arcuate wheel well panel, the front quarter panel, and the wheel well roof panel. Further, this cavity is in communication with air outlets lying in the region of a front vertical door gap and disposed substantially in a transverse plane of the vehicle.

Abstract: A device for regulating the heat output or heat capacity of a heat exchanger in an automotive vehicle with an actuating member to control the flow of a heat exchange medium and with a control device operating the actuating member. To provide input to the control device, signals are received from a highly rated internal temperature sensor and a lower rated heating air temperature sensor disposed at the outlet of the heat exchanger as well as a manually adjustable set point generator. The control device includes a pulse generator producing a triangular voltage of a constant frequency, with a differential amplifier for the signals of the temperature sensors as well as the set point generator. A comparator is provided for producing rectangular pulses in correspondence with the triangular voltage frequency, with a pulse width corresponding to the temperature signal of the differential amplifier. The heat exchanger is tubular and has a large ratio of heat exchange medium volume to heat dissipating surface area.