Abstract: A hydrokinetic torque converter transmission for multiplying torque delivered from a driving member to a driven member comprising a bladed impeller connected to the driving member, a bladed turbine connected to the driven member and a stator located between the flow exit section of the turbine and the flow entrance section of the impeller, said impeller comprising a main impeller blade section and an auxiliary impeller blade section, the latter being located radially outward with respect to the former, and a centrifugally operated clutch structure for connecting together for rotation in unison the auxiliary impeller blade section and the main impeller blade section at high impeller speeds and for disengaging them when the impeller speed is less than a predetermined value.

Abstract: A power steering system has a pump, a steering gear and pressure and return passages. The pump does not include a cover member which conventionally provides space for the storage of excess fluid. The return passage has an expansible chamber included therein which accommodates the fluid volume change within the system resulting from fluid temperature changes thus permitting hermetic sealing of the system. An aspirator can also be included within the expansible chamber to improve the inlet pressure condition at the pump.

Abstract: A hydrodynamic control coupling having a toroidal working chamber defined by a primary bladed wheel connected with a driving motor and a secondary bladed wheel connected to the driven element; a draining device for draining working fluid from the working chamber; a filling pump supplies working fluid to the working chamber; a valve varies the filling flow to the working chamber; the valve is a flow divider comprised of two interconnected valves including respective valve elements mounted in tandem on a common shaft which is shiftable axially; each of the interconnected valves includes a respective valve seat; as one valve element is moved away from its valve seat; the other valve element is simultaneously moved toward its valve seat; at least one of the valve elements and its seat is tapered to an acute cone angle, with other conically tapered shapes also being disclosed for one or both of the valve element and/or valve seat; one valve chamber supplies working fluid to the working chamber; the other valve cha

Abstract: A pressurized fluid supply for an auxiliary power steering system includes a regulator valve assembly controlling the output pressure of a fluid supply pump under the opposing influences of the pump discharge pressure and a signal feedback pressure from a fluid operated servomotor. An adjustable bias applied to the regulator valve assembly establishes a low idling discharge pressure for the pump while no steering action is being performed by the servomotor to which the pump is connected by a control valve biased to a flow blocking position.

Abstract: A drive train includes a hydrostatic transmission unit and a multiple speed range transmission unit arranged in series between a prime mover and a primary output shaft, variable displacement and torque transmitting capacity of the hydrostatic transmission unit being adjusted by hydraulic controls including a speed control valve for developing a differential pressure signal proportional to a desired rate of operation, a modulating valve for regulating the differential pressure signal corresponding to accelerating and decelerating operation of the transmission, a directional control valve for determining the direction of operation of the hydrostatic transmission unit, and a range selector valve for shifting the operating speed range of the multiple speed range transmission as the hydrostatic transmission approaches a limit of displacement, the displacement of the hydrostatic transmission being automatically reset in response to shifting of the multiple speed range transmission.

Abstract: A power generator comprising: body means having three chambers separated from each other by fixed fluid-tight partitions and having a central bore. Shaft means are rotatably mounted in the central bore of the body means with at least one end of the shaft means extending from the body means. At least two drive cylinders are mounted in the central one of the chambers in the body means, each of the drive cylinders include two pistons which are slidably mounted in opposition with each piston having two opposite working faces. The piston rods are attached to the corresponding ones of the pistons traversing a respective of the partitions through stationary fluid-tight joints for allowing the piston rods to move therethrough on a pure translational movement. Two swash plate means are provided. Each of the swash plate means includes a respective lateral one of the chambers.

Abstract: A hydraulic drive according to the invention comprises a gas hydraulic accumulator and a chamber whose volume is equal to at least the consumption of fluid by a User, e.g. a hydraulic cylinder of a press. This chamber is divided by a piston into two spaces. One of these communicates with the accumulator through a pipeline which is connected to a pump. The other space of the chamber communicates with the pump through a nonreturn valve, and with the User, through a closing device. This layout of the hydraulic drive steps up its reliability and ensures the possibility of controlling the pressure in the gas-hydraulic accumulator.

Abstract: A system including a hydraulic pump unloaded by a first system relief valve which is piloted by a remotely controlled two position directional valve. A second system relief valve in a hydraulic cylinder exhaust line is also of the pilot operated type. A manually operable valve in the truck cab pilots the second system relief valve to provide the operator precise manual control of cylinder discharge and speed of dump body lowering. A modified system includes a solenoid actuated two position directional valve for zero back pressure pump unloading. A hydraulic lift cylinder exhausts fluid during dump body lowering past pilot controlled relief valve the pilot line of which is branched permitting separate or combined control of the pilot flow by a manual or a solenoid actuated valve. A further modified system for both truck and trailer dump body control includes a pilot operated relief valve controlled by a solenoid valve for dumping pump output at low pressure.

Abstract: Simple passage structure of a lock-up torque converter is disclosed. With this passage structure an output shaft without any circumferential groove can be used. The output shaft has an axial passage and a radial passage communicating with the axial passage. A first spacer is mounted within an annular space between the output shaft and a stationary sleeve to divide the annular space into a first annular chamber and into a second annular chamber. The first annular chamber communicates with the inside of a turbine runner, while the second annular chamber communicates with the radial passage of the output shaft and with a control valve. A second spacer is mounted axially spaced from the first spacer and forms with the first annular spacer the second annular chamber. The second annular chamber and the radial and axial passages of the output shaft provide communication between the control valve and a clutch chamber of a direct drive clutch.

Abstract: An oil well pump jack with dual hydraulically operated piston and cylinder assemblies for pivoting the walking beam of the pump jack and including a unique control arrangement for controlling operation of the piston and cylinder assemblies. The pump jack includes a unique base or skid and an adjustable knee brace assembly to facilitate positioning of the pump jack in properly supported relation to the oil well at the oil well site. The control arrangement for the piston and cylinder assemblies includes a reversing valve, a linkage mechanism for operating the reversing valve to cause controlled oscillation of the walking beam and a cushioning device for controlling acceleration and deceleration of the oscillating walking beam to reduce abrupt tension forces exerted on the polish rod and sucker rods and impact forces imparted to the pump jack during oscillation of the walking beam.

Abstract: A hydraulic control system comprising a hydraulic actuator having opposed openings adapted to alternately function as inlets and outlets for moving the element of the actuator in opposite directions and a variable displacement pump with loading sensing control for supplying fluid to said actuator. A meter-in valve is provided to which the fluid from the pump is supplied and a pilot controller alternately supplies fluid at pilot pressure to the meter-in valve for controlling the direction and displacement of movement of the meter-in valve and the direction and velocity of the actuator. A pair of lines extends from the meter-in valve to the respective openings of the actuator and a meter-out valve is associated with each line of the actuator for controlling the flow out of the actuator when that line to the actuator does not have pressure fluid from the pump applied thereto. Each meter-out valve is pilot operated by the pilot pressure from the controller.

Abstract: A telescoping hydraulic cylinder apparatus for elevator application, wherein telescoping cylinders and a piston rod extend or retract simultaneously, having a compensator pump for automatically replenishing fluid lost due to leakage from the upper cylinders of the apparatus.

Abstract: A system for selectively and controllably supplying pressurized fluids to dental or surgical tools requiring high pressure air at two levels of pressure and low pressure air and/or liquid.

Abstract: A brake bleeder adapter, for use with automotive brake system master cylinders having reservoirs which should not be subjected to clamping and/or bleeding pressures as was done according to prior methods of brake bleeding, connects the hydraulic brake system of the automobile to a supply of pressurized brake fluid without subjecting the reservoir to such pressures during the process of bleeding the brakes. When securing this adapter to the brake system, the master cylinder fluid reservoir is essentially by-passed and the adapter is connected directly to the master cylinder. Entrained air within the replacement brake fluid is effectively prevented from entering the brake system by either releasing such air from the fluid or confining it to the fluid remaining in the adapter thus reducing the time needed to complete the bleeding process.

Abstract: A turbine power plant of particularly inexpensive construction and using static expansion of the combustion gas to accelerate slugs of liquid used as the motive power for a Pelton wheel. The turbine power plant comprises a fuel combustion unit producing combustion gas which serves to impart speed to slugs of an auxiliary liquid, like water, in output pipes; this auxiliary liquid acts on a Pelton wheel to produce rotary drive. A part of the auxiliary liquid is reconverted as slugs to compress the air supplied to the fuel combustion unit. The turbine power plant also includes a second Pelton wheel driving a common shaft for an air fan, and a pair of rotating nozzles arranged to produce the said slugs of auxiliary liquid. The second Pelton wheel is driven by part of the auxiliary liquid.

Abstract: A rotating fluid coupling of the type which has a primary coupling half and a secondary coupling half which together form a working chamber which is filled with working fluid. A control device which is arranged on the secondary coupling half is used to regulate the rotary take-off drive speed of the coupling by comparing an operating value, such as the centrifugal force which is a result of the rotating drive speed, with a variable command value and when the operating value differs from the command value initiates adjustment of the rotary drive speed. A fluid container on the secondary coupling half revolves with the secondary coupling half. A stationary supply line for control fluid to the fluid container is provided with a permanent outlet opening at a distance from the axis of rotation of the fluid coupling.

Abstract: A fluid transmission circuit in which three or more pumps, adapted to be driven in unison by a prime mover operating at constant power output, draw fluid from a reservoir and deliver it to a reversible fluid motor via a control valve incorporating forward, neutral and reverse positions, the motor being driven, when the circuit is in use, against a fluctuating resistive force. The fluid outputs of two or more of said pumps are controlled by the output of a diverting valve whose input is connected by a separate pressure-sensing line to the fluid flow through the motor and which is initially biassed into a position in which each of said fluid outputs from said pumps is delivered to the motor.

Abstract: In an hydraulic system an unloader valve is located in a line between a pump and an hydraulic accumulator. The unloader valve is operative to prevent the accumulator from being overcharged and to allow the pump to re-charge the accumulator should the pressure stored therein fall below a desired minimum value. The unloader valve incorporates a control valve comprising a spool, and a pressure responsive slave which is operated by fluid pressure under the control of the control valve. Two springs bias the spool into a first position in which pump pressure can be supplied to the accumulator, and the second spring is inoperative when the spool is moved into a second position in which fluid pressure from the accumulator can act on the sleeve to reduce the pump pressure to that of the tank for the pump.

Abstract: A load responsive fluid power control system using servo type flow control valves and fluid motors supplied by a variable displacement pump. The pump displacement is either regulated by an electro-hydraulic control valve in response to an electrical signal proportional to motor load or the pump displacement is regulated to maintain a constant discharge pressure. The flow of pressurized fluid from the pump is automatically cut off from a servo type valve controlling a negative or aiding load once this load exceeds a certain minimum level and the inlet flow requirement of the actuator is supplied from a low pressure source bypassing the servo valve.

Abstract: A gas turbine combustor which may be of cylindrical or annular configuration has a concave inner surface at its upstream end, and means for directing combustion air along the concave surface towards the middle thereof so as to form a stable vortex pattern near the concave surface, the vortical flow being in an upstream direction in the region of the periphery of the concave surface. A fuel injector for directing fuel droplets into combustion air flowing over the surface may be located at the middle of the concave surface.