Abstract: A braking pressure control system comprises a braking pressure generator, a brake-actuating device for at least one vehicle wheel, a connecting line between the braking pressure generator and the brake-actuating device, a shut-off valve in the connecting line which has two switching positions, the connecting line being open in the basic position of the shut-off valve and the connecting line being closed or throttled in the switched position of the shut-off valve, including an outlet line which connects the brake-actuating device to a pressure fluid collecting means, an electromagnetically operated pressure-limiting valve in the outlet line, a wheel sensor which determines the rotational speed of the vehicle wheel and issues a corresponding sensor signal, and an electrical controlling and evaluating unit which has an input for the sensor signal and a first switching output to which a switching signal for the shut-off valve is applied, and a control output which issues a control signal for the current-supply ci

Abstract: A rotary control damper is described that includes a rotor comprising a spur gear and a plurality of rotary cylindrical bodies coaxially provided on a lower face of the spur gear. The damper also includes a stator comprising a plurality of stationary cylindrical bodies coaxially provided on an upper face of a base. The stationary cylindrical bodies rotatably engage the rotary cylindrical bodies of the rotor. An annular protrusion is provided on an outer periphery of the outermost outer race of the rotary cylindrical bodies. The protrusion engages a protrusion provided on the base of the stator outside the outermost inner race of the stationary cylindrical bodies. In addition, it slidingly engages the annular protrusion of the rotor in a direction of rotation of the rotor. The protrusion has a downward inclination face provided on at least one of the engaging faces between the annular protrusion and the engaging protrusion.

Abstract: A power-actuated parking brake is provided that produces sufficient force to set a parking brake for a locomotive. A powered drive train rotates a sheave over which a brake chain is positioned. Rotation of the sheave draws up the brake chain that is connected at one end to the parking brake. The parking brake is set when sufficient tension is applied to the brake chain by the powered drive. The drive train includes a drive shaft driven by an electric motor and connected to the sheave through a planetary reduction drive and a clutch.

Abstract: A method serves to actively perform vibration damping of driven elements of workpiece transport devices in and on shaping machines, especially presses and punches. A measured state value of the driven element or one reconstructed by an observer is determined. The state value is then entered into a damping regulator which affects the drive of the driven elements. A damping regulating circuit is provided in addition to a position regulating circuit.

Abstract: An electronic controller for actuating electric wheel brakes on a towed vehicle which includes a device for sensing the electric current flowing to the towed vehicle wheel brakes. The device is operative to interrupt the flow of electric current if the current flow becomes excessive. The controller also retains gain settings if the supply of power to the controller is interrupted and has a visual display for indicating results of self-diagnostic testing.

Abstract: An electrical power generating system for a railcar to provide power for electrically driven accessories on the railcar which includes a generator driven by an air motor, wherein free air to the air motor is derived from air operating the braking system on the railcar, and particularly air that is exhausted to the atmosphere during braking operations.

Abstract: A power transmission system for a snowmobile reduces the weight thereof, and allows a streamlined body to be obtained. A drive side pulley of a V-belt transmission is mounted on a right end of a crankshaft of an engine. A gear box is disposed on the right side of a driven side pulley of the V-belt transmission at a position near the driven side pulley. The driven side pulley is fastened to an input shaft. Thus, the V-belt transmission and gear box are disposed on the same right side of the engine, so that the connecting shaft for connecting the V-belt transmission to the gear box is shortened and the weight thereof is reduced. Further, the V-belt transmission and the engine are disposed between a pair of right and left main frames, and the gear box is disposed outside of the right main frame, to thereby shorten a distance between the right and left main frames.

Abstract: A left hydraulic pump 3L connected to a left wheel and a right hydraulic pump 3R connected to a right wheel are interconnected by a first oil passage 21 and a second oil passage 22 to constitute a closed circuit. First and second variable throttle valves 8L and 8R are mounted between the first and second oil passages 21 and 22 and a tank 6. A first on-off valve 11L is disposed between two working chambers 9L.sub.2 and 9L.sub.3 of the left hydraulic pump 3L and the second oil passage 22, and a second on-off valve 11R is disposed between two working chambers 9R.sub.2 and 9R.sub.3 of the right hydraulic pump 3R and the first oil passage 21. For example, if the first variable throttle valve 8L is throttled, the pressure in the first oil passage 21 is risen to open the first on-off valve 11L, thereby increasing the amount of oil discharged from the first hydraulic pump 3L.

Abstract: A regenerative braking control system for an electric vehicle which can be driven by operating an electric motor with electric energy supplied from an electric energy supply source mounted on the vehicle. A control unit (7) is designed so that regenerative braking force of the electric motor (2) is controlled in accordance with an inclination detected by an inclination detecting unit (28). This has made it possible to provide the electric vehicle with improved drivability and running performance.

Abstract: The present invention provides a liquid enclosing type vibration isolating mount comprising a vibration isolating base member 16, a diaphragm 20 and a partition member 22 for vertically dividing a space between the former two into upper and lower liquid chambers 24 and 26. The partition member 22 is made of a press worked metal plate which is held in contact with the periphery of the diaphragm 20 to provide an orifice path 28 for establishing communication between the liquid chambers 24 and 26. The vibration isolating mount of the present invention has the following advantages: The partition member 22 is made of a press worked metal plate so that the manufacturing cost can be saved; since the periphery of the diaphragm 20 is used as a part of the wall of the orifice path 28, the axial length of the mount can be shortened and the shape of the mount is simplified; and the pressing process of the partition member 22 is facilitated.

Abstract: A variable resistance device comprises an inner elongate, flexible electrode having a longitudinal central axis, at least one outer electrode spaced from the inner electrode and at least partially or completely surrounding the inner elongate electrode to form a gap therebetween. The outer electrode has a longitudinal axis that is at least substantially coaxial with the central axis of the inner elongate electrode. An electroviscous fluid is positioned in the gap between the inner and outer electrodes. An electric field applied to the electroviscous fluid between the inner and outer electrodes causes an increase in the stiffness of the device. In one embodiment of the invention, the outer electrode is also flexible to form a flexible resistance device, the stiffness of which can be controlled by the application of the electric field. In a further embodiment, an enclosed chamber is filled with an electroactive fluid and a piston assembly is mounted for reciprocal movement in the chamber.

Abstract: During a time period of from a time that is immediately before a vehicle being stopped to a time of the vehicle being stopped, a pressure increase gradient in braking fluid pressure which is applied to wheel cylinders of rear wheels is made to be larger than a pressure increase gradient that prevailed until a time that was immediately before the vehicle being stopped. As a result, a pitching motion that occurs in a vehicle body can be suppressed.

Abstract: A device is proposed for braking an electrically conducting strip (B), said device being mounted in front of a processing station where the strip (B) under tension undergoes further processing and is provided with a magnetic field generating device (3). The latter generates an alternating magnetic field which induces eddy currents in the strip (B) which in turn exert on the strip a force in a direction against the strip's direction or travel (F). The magnetic field generating device (3) comprises at least one rotating magnetic roller (4, 5) which is aligned transversely in relation to the direction of travel of the strip (B) and is provided around its circumference with magnetic poles (6, 7) of differing polarity in alternating sequence. The direction of rotation (R) of the magnetic roller (4, 5) is opposite to the direction of travel (F) of the strip (B).

Abstract: A spring module having a shaft movable in first and second directions and a biasing element for urging the shaft into a normal position upon loss of power. The spring module also includes motion limiting means for limiting the deenergization of the biasing element and a speed reduction apparatus intercoupling the motion limiting means and the shaft. The biasing element is energized upon movement of the shaft in the second direction and deenergized by shaft movement in the first direction. Similarly, the motion limiting means are coupled to the shaft for movement in third and fourth directions. The speed reduction apparatus moves the motion limiting means at a slower rate in the third and fourth directions than the shaft moves in the first and second directions.

Abstract: In a hybrid leaf spring, an elongated primary leaf element is provided having a first modulus of elasticity, a tension surface, and a compression surface. At least one layer of composite material is substantially parallel to and bonded to the tension surface of the primary leaf element with at least a second layer of composite material bonded to the compression surface of the primary leaf. The primary leaf element can also include mounting eyes coupled to the ends of the primary leaf element for mounting the hybrid leaf spring to the frame of a vehicle. The hybrid leaf spring can also include multiple layers of composite material bonded to both the tension and compression surfaces of the primary leaf spring.

Abstract: A wheelchair braking system, for use on a wheelchair having a frame and a pair of wheels, comprising an axle assembly attached to one of the wheels. The axle assembly is supported within a block assembly. The axle assembly has a locking gear comprising a plurality of gear teeth. The block assembly is mounted within a housing and is capable of controlled vertical motion within the housing. The housing is rigidly mounted to the frame. A main spring is located between the housing and block, such that weight upon the wheelchair compresses the main spring and allows the block to move upward within the housing. A foremast assembly having a foremast body is mounted to the housing such that when the block is lowered sufficiently within the housing, the foremast body engages the gear teeth and stops the gear from rotating.

Abstract: An automotive brake control system with a skid control hydraulic unit and a pressure apply pump-and-piston device, comprises a single motor having a driving connection both an ABS return pump and a pressure apply pump, a circulation circuit being connected between a pressure introduction chamber of a pressure apply piston unit and a pressure apply suction circuit of the pressure apply pump, and a circulation mode-select valve disposed in the circulation circuit for opening and closing of the latter. The circulation mode-select valve comprises a normally-open valve. An electronic control unit is provided for closing the circulation mode-select valve only during the traction-and-yaw control in which a pressure apply action of the pressure apply piston unit is required.

Abstract: A pressure difference is formed between a master cylinder pressure and a wheel cylinder pressure when a master cut-off valve closes a hydraulic path connecting a master cylinder and a wheel cylinder and a hydraulic pump supplies pressurized brake fluid to the wheel cylinder. After the pressure difference has been formed, the master cut-off valve opens the hydraulic path so that the pressure difference is cancelled. As a result, pulsations in brake fluid pressure occurs in the hydraulic path. A failure of the master cut-off valve or the hydraulic pump is detected based on the pulsations in brake fluid pressure.

Abstract: A rail car brake monitoring apparatus (10) for monitoring the status of a brake system (12) on a rail car is disclosed. The monitoring apparatus (10) includes a transmitter and receiver unit (52) and a controller (54). The transmitter and receiver unit (52) generates and directs a transmitted signal towards a component of the brake system (12) and receives a reflected signal from the component. The controller (54) analyzes the transmitted and received signals to generate a position signal representative of a position of the component for use in monitoring or controlling the brake system (12).

Abstract: A vehicle braking system including an antilock braking system or a traction assist braking system, or both, operatively coupled therewith, is disclosed. The system includes a pump assembly including a housing defining a main bore, an inlet bore, and an outlet bore. A reciprocatable piston is retained in the main bore. An inlet check valve is operable to pass fluid to the outlet bore when the piston reciprocates. An outlet check valve is inserted into the outlet bore and operates to pass fluid from the pump assembly when the piston reciprocates. A deformable flange extends sufficiently outward from a valve body of the outlet check valve. The flange secures the outlet check valve within the outlet bore when the flange is deformed into displacing engagement with the outlet bore. Further, a method of securing a valve in a bore of a pump assembly is disclosed.