Abstract: An apparatus for depositing metal or alloy films by a thermal decomposition process on a substrate includes a furnace having a number of selectively heated zones. The temperature of each zone is controllable so as to provide compensation for changes in the concentration of reactant materials in the different regions of the furnace. Means are provided for the safe handling of highly pyrophoric organometallic reactants. The apparatus may be used for the deposition of aluminium/silicon alloy films on semiconductor wafers in the manufacture of integrated circuits.

Abstract: In vacuum brake boosters for motor vehicles, the vacuum casing is conventionally made of sheet steel. The vacuum casing is subjected to mechanical and pneumatic forces which have to be absorbed by the casing components. This makes it necessary to construct the casing components so they are strong enough to take these forces. The result of such construction is, however, high costs and high weight. To eliminate these disadvantages, the invention provides a brake booster wherein the vacuum casing includes a pipe therein extending in approximately coaxial of the longitudinal axis of the vacuum casing and connected to the transverse end walls of the vacuum casing, the pipe enclosing the master cylinder push rod, and the movable wall of the brake booster is sealed relative to the pipe and slidable thereon.

Abstract: A brake booster comprising a housing which is divided into a vacuum chamber and a working chamber by a movable wall. A tube is disposed in the housing coaxial of the longitudinal axis thereof having its ends fastened to the end walls of the housing. The tube is provided with longitudinal slots in the vacuum chamber which are open remote from the movable wall. Parts of the movable wall project through the slots and are fastened to a valve housing extending into the tube, the valve housing containing a control valve which controls the pressure in the working chamber. This arrangement allows a short overall length of the booster and enables easy assembly thereof with respect to known prior art brake boosters.

Abstract: Aluminum metallization layers on a semiconductor substrate are alloyed with a predetermined quantity of silicon by implanting silicon ions into the metallization layer. The layer is heated during subsequent processing to a temperature of 300.degree. to 500.degree. C. at which simultaneous annealing and diffusion take place to form the alloy.An apparatus for performing the process comprises a vacuum chamber wherein implantation is effected, an ion gun and means including a deflection magnet slit for selecting a single ionic species for implantation.

Abstract: The multiple-circuit hydraulic brake system includes a brake-actuating device having three working chambers for actuating wheel brake cylinders. A first brake circuit is connected to a first of the three working chambers and separately to each wheel brake cylinder of the rear axle through a different one of two control valves controlled by the pressure of a second and a third of the three working chambers. A second brake circuit is connected between one of the wheel brake cylinders of the front axle and the second of the three working chambers and a third brake circuit is connected between the other of the wheel brake cylinders of the front axle and the third of the three working chambers. Upon failure of the second and/or third brake circuit, the associated one of the two control valves retain the pressure of the diagonally opposite rear axle wheel brake cylinder below the wheel locking limit.

Abstract: A starting circuit which is connected in parallel with the lamp. No ballast is required for the starting circuit. The starting circuit uses a pulse transformer, the primary of which is connected into an RC network, the secondary of which is connected in series with a capacitor which prevents current flow at the low frequency open circuit voltage. The circuit being in parallel with the lamp enables the use of low power components such as the pulse transformer, since the lamp operating current does not traverse the circuit as would be the case with a series starting circuit or ballast transformer.

Abstract: A sequencing blow down or blow off valve mechanism for the low water cut off and/or water column of the equalizing piping network of a steam boiler. The valve mechanism is located at the junction of the vertical cut off outlet pipe, the lower horizontal pipe to the boiler and the vertical drain line. The valve mechanism normally rests in a position completing the network while blocking the drain line. The valve mechanism may be moved to successive positions completing drain paths from the lines of the network to the drain line. Whenever the valve mechanism is out of the normal position, the fuel supply to the boiler is shut off to prevent boiler firing. The valve mechanism provides a visual indication of the valve position. Further the valve mechanism allows access to the network lines for cleaning and/or rodding of the lines whenever the valve mechanism is in any of the successive positions. Manual and automatic operation are disclosed.

Abstract: Hydraulic brake systems are known which comprise antiskid control valves and a pressure fluid source where pressure fluid is fed via a valve device and an antiskid control valve to a wheel brake cylinder. The pressure fluid source includes two jointly driven pumps. The disadvantage of such a system is the constant presence of a high pump output although this high output is only rarely required. Therefore, according to the present invention, an energy saving is realized by having the suction connection of a first of two jointly driven pumps connected to a pressure fluid reservoir and the suction connection of a second of two jointly driven pumps connected to the pressure fluid outlet of an antiskid control valve.

Abstract: The spring guide rail has several centering fingers and a bottom rail and is made out of a one-piece sheet metal strip into which substantially rectangular recesses are punched so that a ladder-type structure is formed with a pair of longitudinal bars being interconnected by cross bars. By repeated bending operations around given longitudinal axes the two parts of the bottom rail are formed by the longitudinal bars and the centering fingers are formed by the cross bars. Between the sections of the cross bars folded to face each other there is a space and in the bottom rail area projections are arranged which ensure the spacing between the opposite parts of the bottom rail. Thus, a simple and stable spring guide rail with a safe guidance is provided for the vane lifting springs.

Abstract: A tandem brake master cylinder comprising a longitudinal bore having two pressure chambers therein each associated with a different one of two pressure pistons, each of the two pressure chambers and its associated one of the two pressure pistons are associated with a different one of two brake circuits. Two parallel inlet sockets are provided in the housing of the tandem master cylinder, each of the two inlet sockets connecting a different one of the two pressure chambers to a brake fluid reservoir. A transverse bore is also provided in the housing of the tandem master cylinder containing a pressure control device for one of the two brake circuits, the control device including a stepped piston and a valve controlled by the stepped piston. The transverse bore intersects a plane containing the axes of the two inlet sockets in an approximate perpendicular manner between the two inlet sockets and beween the longitudinal bore and the reservoir.

Abstract: A brake shoe assembly comprises a carrier plate and a brake shoe spring having between its ends a loop-shaped portion. The loop-shaped portion is supported in a recess in the carrier plate which opens onto a peripheral surface of the carrier plate via an opening. The largest width of the recess is greater than the smallest width of the opening. A fastening arrangement retains the loop-shaped portion of the spring in the recess against slipping out of the latter in the axial direction normal to the carrier plate. The fastening arrangement may include a projection in the recess which engages in a slot of the spring, a groove in the recess which partially receives the loop-shaped portion of the spring, or a pair of lugs at the axial ends of the loop-shaped portion of the spring which confine the carrier plate between themselves.

Abstract: A seat position control device for a powered or automatic seat adjusting mechanism for motor vehicles. The motor drives for the various adjustments uses a motor with a predetermined number of poles. Thus, for each revolution of a motor, a predetermined number of pulses is generated. By counting these pulses relative to a reference, the position of the seat can be determined. Within memory, a desired location setting may be registered to return the seat to that setting when desired. A commercially available microprocessor or suitable electronic components may be used as the logic and memory medium.

Abstract: A hydraulic power booster arrangement includes a brake valve which is arranged substantially in parallel to a booster piston and which is operative for controlling the connection from a pressure chamber to a auxiliary pressure source or to an unpressurized return reservoir. To control the movement of the brake valve, there is provided a multipart lever actuation mechanism including a support lever and at least one control lever which are pivotally connected to one another intermediate their respective ends. One end of the support lever is pivotally mounted on a retaining member which is rigidly connectible to the power booster housing. The housing is provided with a mounting hole through which the lever actuation mechanism is adapted to be inserted into the pressure chamber and which is adapted to be closed by the retaining member.

Abstract: A power brake unit for an automotive vehicle comprising a booster utilizing the pressure difference between a vacuum and atmospheric pressure including a vacuum casing composed of a cup shell and a cover shell, and a master cylinder secured to or formed integral with the cup shell. The entire unit is fastened to the splash wall of a vehicle by a fastening means secured to the cup shell adjacent the master cylinder. This fastening arrangement reduces substantially lost travel of the brake pedal due to extension of the vacuum casing in prior art power brake units caused by brake actuating forces and enable employment of lighter weight materials for the power brake unit.

Abstract: A control for an outdoor lighting fixture which adds an extra off-on cycle to that imposed by a photoelectric cell control. At a predetermined time during the on period of the lighting fixture, the lamp of the fixture is shut off. This shut-off time had previously been determined as one during which traffic in the area is at a minimum. A set time after the shut off, the lamp is lit once again, this time being selected as a time when traffic is re-appearing. When the ambient light reaches the shut-off level of the photoelectric cell, the lamp is shut off for the day. In this way, the lamp is turned off for a timed period for the purpose of reducing the energy required by the lamp for the dark hours of the night.

Abstract: A brake booster for automotive vehicles comprises a low-pressure casing sealingly subdivided into a low-pressure chamber and a working chamber by an axially movable wall. The two transverse end walls of the low-pressure casing are interconnected by a central reinforcement tube integrally formed with a master cylinder. The actuating piston of the master cylinder is connected to a guide piston which is guided in the reinforcement tube and which receives a rubber-elastic reaction disc in an end thereof remote from the master cylinder. A control valve casing is axially movable in the reinforcement tube, bears axially against the reaction disc and is connected to the movable wall by radial ribs extending radially through longitudinal slots in the reinforcement tube. The radial ribs are connected to a ring which encompasses the reinforcement tube and which is secured in a bowl-shaped hub member of the movable wall.

Abstract: An apparatus for fixing the relative position of components within an automotive seat track mechanism. Such mechanisms are conventionally powered by electric motor drive, such as a motor with multiple armatures or by using separate motors mounted on a unitary platform or by using clutch activated members driven by a single motor. The output of the motor drive is transmitted through respective gearing to lead screws or rack and pinions within or adjacent to the tracking structures at both sides of the seat to translate the seat horizontally. The motor drive output is also transmitted to operate individual lead screws or rack and pinions within or adjacent one structure for the vertical seat movements. The motor mount is secured to the tracking structure at one side of the seat. A simple light weight holding rod secures the motor mount to the opposed side structure to produce a rigid, yet readily detachable motor mount.

Abstract: The pre-assembled two-stage reaction device for a vacuum brake booster includes reaction levers which are in engagement with the booster movable wall at a first location and with the master cylinder push rod and a reaction plate connected thereto at a second location, with the first location being arranged radially farther out than the second location. The reaction levers are acted upon by a cup spring at a third location, with the cup spring being positioned on the side of the reaction levers adjacent a vacuum chamber and with the third location having a greater radius than the first location. A spring plate is arranged between the cup spring and the reaction levers whose circumferential collar is provided with flattened portions for the reaction levers on the side adjacent the reaction levers.

Abstract: The radial piston machine comprises a rotor-stator unit including an outer stator and an inner rotor received in a housing, with the rotor being rotatable with a connected shaft through a spring clutch engaging one rotor end face. The rotor is centered axially elastically relative to the stator. The stator includes on its periphery at least one elastic body supporting the unit in the housing in a radially elastic and substantially torsionally secured and axially located fashion. At least another sealing body provided on the periphery of the stator seals the unit relative to the housing in the area of a pressure port, such that the elastic body associated with the sealing body is not acted upon by hydraulic pressure.

Abstract: There is disclosed a spot-type disc brake having a non-rotating brake carrier to receive the brake torque with brake shoes disposed on both sides of the brake disc. A yoke or frame embraces the disc and is movably guided in the brake carrier and held without clearance by resilient means. The frame transmits the operating force of an actuating device to the brake shoe disposed on the side of the disc remote from the actuating device. The frame is rigidly supported at and movable with respect to three guide points on the brake carrier. A biased spring is disposed between the brake carrier and frame. The spring .[.tensions.]. .Iadd.forces .Iaddend.the frame .[.at.]. .Iadd.against .Iaddend.its guide points and .Iadd.the spring force .Iaddend.acts on the frame at a point distant from the three guide points.