Abstract: This invention relates to a flange-type stop cock having a ball valve plug. This ball-valve stop cock is so constructed as to have the same profile or outline as the flange portion of the existing flange-type stop cock having a conical-shaped valve plug. The flange mounting holes and the input and the output fluid openings are designed to conform with that of existing pipe seat brackets so that the present ball-shaped plug stop cock is a direct replacement for the conical-shaped plug stop cock.

Abstract: An overload protection and/or warning arragement for a vehicle brake which is activated by brake pressure so that overload protection and warning indication occurs essentially without any time-delay.In one embodiment of the invention, it is proposed to compare, by means of a comparison apparatus, a design brake pressure P(design) determined on the basis of a regulated variable imparted to an activation apparatus of the vehicle brake and of operating data of the vehicle and/or of the design data of the brakes and of the brake application apparatus with the actual brake pressure P(actual), and to initiate a warning signal if P(actual) differs by a specified amount from P(design).In another embodiment of the invention, it is proposed that the warning signal be initiated if the actual brake pressure produced by the existing brake pressure differs by a specified amount from a design brake force which is determined from the brake pressure and the design data of the brake and the brake-actuating apparatus.

Abstract: An irreversible free wheeling clutch arrangement having a hollow housing member for rotatably supporting an input driveshaft and an output driven shaft. A one-way transmission mechanism is provided including a plurality of roller bearings caged between a plurality of arcuate segments formed on the input shaft and cooperatively associated with a multi-faced contact member carried by the output shaft so that rotary movement of the input shaft is transferred to the output shaft but attempted rotary movement of the output shaft is not transferred to the input shaft.

Abstract: A circuit arrangement for protecting the antilocking electrical system from overvoltages developed in the vehicle's electrical systems. Such overvoltages can be caused by a load dump and can lead to destruction of the vehicle's electrical system. To sense an overvoltage condition, a test circuit is provided which is connected to the vehicle's electrical system. The voltage test circuit provides an output signal when the voltage of the vehicle's electrical system exceeds a first threshold value. This output signal is used to switch the final stage of the antilocking electrical system. The overvoltage is thereby conducted directly to one or more low-resistance solenoid valves which limit the voltage in such a way that it no longer presents any danger to the vehicle's electrical system.

Abstract: A railway light signal having a pair of lenses carried by a frame member and having a lamp receptacle including a one-piece molded plastic bracket having a flat top surface upon which is mounted a pair of lamp sockets and light bulbs, having a pair of laterally extending flanges which are screw-mounted to the frame, and having an apertured depending rear wall for accommodating a pair of terminal posts which supply power to the pair of lamp sockets for illuminating the light bulbs.

Abstract: A compact, balanced and lightweight air compressor unit for a railroad vehicle which includes a motor-driven compressor, a suction strainer and suction silencer. The compressor and motor are interconnected by an intermediate hollow flanged mounting member which has a cross-sectional dimension that is smaller than the cross-sectional dimension of the motor and compressor. The suction strainer is located in a space between the motor and compressor and is attached to one side of the intermediate hollow mounting member while the suction silencer is located in a space between the motor and compressor and is attached to the other side of the intermediate hollow mounting member to form a substantially balanced structure which is suspended to the underside of the floor of the railroad vehicle by a plurality of resilient bumper connectors.

Abstract: A pneumatic pressure actuator including a cylinder assemblage having a pair of metallic cylinder heads and a fiberglass cylinder casing held together by a plurality of tie bolts and nuts. A piston and piston rod reciprocally movable within the cylinder assemblage and including a greased nylon cushion ring and polyurethane wiper ring for reducing frictional wear between the relatively movable surfaces.

Abstract: A valve assembly having a valve seat, and a valve tappet that moves relative to the valve seat. A stop member for limiting the stroke of the valve tappet. The valve tappet includes an elongated shaft having a reduced mid-section for the purpose of increasing flexibility. The stop member for the valve tappet is a flexible ring-shaped element which functions like a spring washer. As a result of the shape of the valve tappet and of the stop member, any sudden excessive forces or stresses occurring during the opening and closing of the valve are partially suppressed by the elastic characteristics to avoid damage to the valve assembly. The energy-absorbing features avoid breakage of the shaft and eliminate deformation of the valve piston and the stop member in the area of the stop communicating surfaces, and also reduce damage to the sealing surfaces between the tappet head and the valve seat.

Abstract: A relay valve device having a first control surface and a second control surface. A shut-off device is located in the line feeding the control pressure into the second control surface throughout the period in which a signal pressure is present, and connecting the second control surface to atmosphere at other times. Thus, the relay valve device releases a greater pressure into a load circuit when actuated during effectiveness of the signal pressure than while the signal pressure is not effective. The shut-off device having a pressure relief valve with a switch-off device so that when the signal pressure is effective, the switch-off device switches OFF the pressure relief function of the pressure relief valve and so that when the signal pressure is not effective, the pressure relief valve is opened as long as the control pressure remains below the relief pressure and is closed when the control pressure moves above the relief pressure.

Abstract: An improved arrangement for measuring and controlling the wear of the first member which is subject to wear during frictional contact with the second member. The unique arrangement employs a simple process which allows a direct measurement of wear with a minimum expenditure. The invention involves a method of measuring the temperature which is generated in the first member or in the second member or in an adjacent member, which is representative of the above-mentioned wear which occurs during frictional contact, and an evaluation circuit for converting the temperature values into wear signals.

Abstract: An equipment mounting assembly including a reinforced L-shaped supporting bracket having a monitoring unit carried by the horizontal arm of the L-shaped supporting bracket. A dual-position carrier plate, secured to the vertical arm of the L-shaped supporting bracket, includes a first channel slide mount for carrying a flashing marker light unit when the assembly is clamped to the core holes of one type of railway car coupler and includes a second channel slide mount for carrying the flashing marker light unit when the assembly is clamped to the core holes of another type of railway car coupler.

Abstract: The invention relates to an analog non-contact distance sensor which includes a fixed stationary annular magnetized armature. The stationary armature member is provided with an air gap into which is disposed an element which is sensitive to a magnetic field. The moving portion is a rod-shaped magnetic core member which can be inserted into the annular armature member. Depending on the depth of insertion of the core member, the amount of diversion of the magnetic field from the air gap of the armature is controlled. Consequently, the magnetic sensing element emits an electrical signal which corresponds to the distance travelled by the movable core member.

Abstract: A fail-safe electronic coincidence detecting circuit including a multiple winding saturable core reactor having a first and a second input winding and an output winding. An NPN transistor amplifier supplying a first pulse train to the first input winding and a PNP transistor amplifier supplying a second pulse train to the second input winding. The output winding producing signal pulses only when the first and second pulse trains are in synchronism.

Abstract: A protection circuit for monitoring and recognizing an undervoltage condition in the electrical system of a motor vehicle having an anti-skid brake control system in order to minimize and reduce any adverse effects on the braking action of the vehicle wheels. The protection circuit includes at least one comparator circuit to recognize if the voltage falls below a predetermined reference threshold voltage. When the supply voltage falls below the threshold voltage, the comparator circuit deactivates at least one of two diagonal switching circuits to remove automatic brakes on at least two wheels of a vehicle by the anti-skid brake control system.

Abstract: A relay valve device which is actuated by the presence of a control signal pressure to a higher pressure supply into a consumer circuit than when the control signal pressure is not present. The relay valve device includes a first control surface and a second control surface, and includes a shut-off device disposed in the feed line of the control pressure to the second control surface. The shut-off device is opened when the control signal pressure is present and is closed when the control signal pressure is not present, and also causes the second control surface to be connected with atmosphere.

Abstract: A vital checking circuit for assuring the reception of only one input signal including a differential amplifier having a pair of PNP transistors. A voltage divider having a first and a second biasing resistor connected to the input of one of the pair of transistors. An a.c. signal transformer coupled to the input of the one of the pair of transistors. A third biasing resistor connected to the input of the other of the pair of transistors. A plurality of current-drawing circuits connected to the third biasing resistor, and an a.c. output signal derived from the other of the pair of transistors when and only when one of the plurality of current-drawing circuits is drawing current through the third biasing resistor.

Abstract: The invention relates to a load-dependent brake pressure system for a pneumatically activated motor vehicle and/or motor vehicle trailer brake apparatus with an entrance device having an initial entrance phase in which the full control pressure is delivered to the cylinders of the wheel brakes. In an emergency situation, the supply pressure which is available on the vehicle must be able to be conveyed in a graduated and controlled manner as the brake pressure is applied to the wheel brakes. The present load-dependent brake pressure system which, in an emergency situation, makes possible the application of brake pressures which are higher than that corresponding to the control ratio up to the available delivery pressure, includes an entrance valve and piston, a control valve, a brake control piston, a relay valve, auxiliary valves, a control, delivery, brake pressure connections and chambers, and a valve tappet for controlling brake pressures in multiple phases.

Abstract: A vehicle gearshift mechanism for a power-assisted transmission with a unilateral gearshift actuator which can be moved into speed selection positions and into a neutral position. The gearshift only has one speed selection position for a shift-up or shift-down, respectively. A respective optimum gear is assigned to the speed selection positions by an electronic evaluation control circuit. The evaluation control circuit receives signals representing the speed and the respective driving conditions of the vehicle to shift to the optimum gear.

Abstract: A sealing arrangement, which can be inserted into a recess formed in a valve housing, to effectively provide a fluid pressure seal between at least one input chamber and one output chamber, and in which a slide piston is movably-disposed in the recess. The sealing arrangement includes a first gasket and a second gasket, which are disposed in coaxial relationship to one another, and which are concentric to the recess of the valve housing. The two gaskets are connected to one another by means of elastic annular connecting pieces. The connecting pieces of the two gaskets are located between a plurality of apertured retaining elements, which have a portion of the end surfaces of projections in contact with the connecting pieces. A plurality of rivet members pass through the apertured retaining elements and the connection pieces to hold them in the form of a sealing cartridge.

Abstract: A power-assisted transmission with a gear shift suppressing arrangement in which the transmission is controlled so that the gears can only be changed when the clutch is completely disengaged. An electrical sensor senses and measures the movement of the clutch. The sensor is connected to an electronic evaluating circuit which controls the selection and the engagement of the gears. The evaluating circuit causes the disengagement of an old gear and initiates a serch for a newly selected gear when the clutch is depressed approximately two-thirds (2/3) of its full stroke. When the full clutch stroke has been reached, the newly selected gear is completely engaged. If the clutch is reengaged before the engagement of the newly selected gear, the transmission is shifted to the neutral position.