Abstract: Method and apparatus for the transmission of images to a screen, wherein luminescence centers of the screen are excited by way of electron beams controlled to suit the image to be transmitted. The electrons are emitted by cathode tips of a thin-film field-effect cathode. The cathode tips are driven individually, the flow of electrons emitted from each cathode tip corresponding to the grey tone for each image point. The cathode tips may be driven by mutually intersecting conducting strips to which are fed successive trigger pulses. In another version, the cathode tips are driven by the use of charge transfer systems, which enable a still picture to be produced by concurrently driving the cathode tips in their entirety.

Abstract: A driving, or outside rear-view, mirror for a motor vehicle including a housing containing a mirror pane. A compressed air circuit provides high pressure air flow to clean the mirror pane and cooperates with a pressure chamber to vary the camber of and hence the field of view offered by the mirror.

Abstract: A method of sensing the curvature of a routing or guide line used in automatic steering of a vehicle. The actual position of the vehicle with respect to the guide line is determined, and an estimated position of the vehicle with respect to the guide line is determined by means of a vehicle model. The actual and estimated positions are compared to obtain the difference between them, the difference being an indication of the curvature of the guide line.

Abstract: A method for producing oxide surface layers on titanium-based objects. The object is pretreated mechanically and, following pretreatment, an oxidation process takes place using a low oxidation potential and a temperature between 480.degree. C. and 800.degree. C. As an oxidizing agent, use is preferably made of water vapor at a partial pressure of about 20 mbar. The water vapor may be mixed with an inert carrier gas, such as argon or helium.

Abstract: Method for manufacturing solar absorption layers by electrodeposition of heavy metals, such as Ni and Co, from aqueous citrate solutions. The heavy metal citrates are produced by direct reaction of metal oxides or carbonates with citric acid. The electrolyte concentration is a maximum 5% and has a pH of between 8 and 11. The deposition process takes place at room temperature, bath voltages of 8 to 30 V, and current densities of 3 to 10 A/dm.sup.2. The layers produced by this method are well bonded black layers resistant to temperatures up to 700.degree. C.

Abstract: A bus having at least three pivotally-connected vehicle members, one of which has two axles spaced from each other, one of these axles being a steering axle. Each of the other vehicle members has a single axle. An engine in the tail vehicle member drives all the live axles through a train of articulated shafts.

Abstract: An articulated vehicle including a front member having at least two axles, the forwardmost one of which is steerable, and a rear member, connected to the front member by a pivotal joint, having at least one axle and an engine for driving that axle. A first transducer produces a signal representative of the angle between the steerable axle and another axle of the front member, and a second transducer produces a signal representative of the buckling angle between the vehicle members. A comparator receives the transducer signals and produces a signal in the event that the actual buckling angle is less or greater than a theoretical buckling angle, the latter being determined by the signal from the first transducer. A device, such as a piston and cylinder device, responds to the comparator signal by producing a torque about the pivotal joint to increase or decrease, as the case may be, the actual buckling angle so that it approaches the theoretical buckling angle.

Abstract: A buckling angle control arrangement for the articulated front and trailing members of a vehicle, including an element, such as a disk or ring, pivotable about the first axis of the articulation between the vehicle members. A pushrod pivotally interconnects the pivotable element with the steering mechanism of the vehicle in such a way that the steering mechanism and pivotable element rotate in opposite directions. Two hydraulic cylinder and piston assemblies are arranged on opposite sides of the articulation axis, each assembly being between the two vehicle members. A three-position valve, for controlling hydraulic fluid flow between the two cylinder and piston assemblies, is itself controlled by an actuating member which cooperates with two cams carried by the pivotable element.

Abstract: An exhaust gas turbocharger for a diesel engine, the turbocharger including a compressor, an exhaust gas turbine, and a shaft joining the compressor and turbine. A flywheel is mounted on another shaft, and a device, such as a freewheel, alternatively couples and uncouples the flywheel shaft and turbocharger shaft. The flywheel shaft is in two sections, and a summation mechanism, such as a planetary gear arrangement, is between the two shaft sections. The summation mechanism is controlled by a hydrostatic device and/or an electronic device. A brake is provided for selectively preventing rotation of the flywheel shaft section between the summation mechanism and the turbocharger shaft.