Abstract: An oil well pump driving unit which includes a hydraulic cylinder mounting arrangement which eliminates the use of a stuffing box by mounting the cylinder by way of a mounting arrangement on top of a pumping tee at the wellhead which includes a cylinder rod sealing arrangement separate from the one in the hydraulic cylinder to preclude leakage of well fluid around the cylinder rod.

Abstract: A system for the metered pumping and dispensing of fluid includes a filter for the pumped fluid and a pump connected to the filter. The pump is of the displacement type which includes a tubular, longitudinally-contractable bellows to receive fluid for pumping, fluid-activated reciprocating means to expand and contract the bellows, and means to selectively introduce working fluid to the reciprocating means. A rigid fluid-tight chamber is formed to surround the bellows, and means are provided to selectively introduce working fluid into chamber, whereby the working fluid assists in contracting the bellows as well as in partially balancing the internal pressure on the bellows.

Abstract: A vacuum pump assembly which is driven by pulsating exhaust gases emanating from an internal combustion engine is disclosed.

Abstract: Disclosed herein is a combined fuel and oil pump comprising a reciprocally movable member for pumping fuel in response to member reciprocation, a reciprocally movable element for pumping oil in response to element reciprocation, and a fluid pressure actuated motor connected to the member and to the element and responsive to a source of alternating relatively high and low pressures for effecting reciprocation of the member and the element at a frequency less than the frequency of the alternation of the relatively high and low pressures.

Abstract: A hydraulically powered long stroke pumping unit including support means with a first pump unit mounted on said support means. The first pumping unit includes a first pump cylinder and first piston means reciprocable in said first pump cylinder and a piston rod extending outwardly from said first pump cylinder. A second pump unit is mounted on the support means in opposed aligned, spaced relationship with said first pump unit, and the second pump unit includes a second pump cylinder and a second piston means reciprocable in the second pump cylinder. The second piston means includes a piston rod extending outwardly from the second pump cylinder toward the piston rod of the first pump cylinder. The piston rods extend toward one another along a common central longitudinal axis, and a pump drive bar is connected to the outermost ends of the piston rods. A hydraulic drive means is connected to selectively and positively drive the pump drive bar in opposite directions in a single plane.

Abstract: This disclosure relates to a vacuum pump assembly which is adapted to be operated by the pulsating exhaust gases of an internal combustion engine. The pump assembly includes a reciprocable pump means and an actuating means including a reciprocable actuating member in communication with the exhaust gases and drivingly connected to the pump means to reciprocate the same. The actuating means includes a first housing member and a second spring steel housing member which together with the reciprocable actuating member define an air spring for effecting movement of the actuating member through one of its strokes and which together serve to position and biasingly retain the pump means in assembled relation with the actuating means.

Abstract: A chemical pump actuator utilizes a variable pilot for operation of the piston power unit and an attached chemical injector. The pilot structure includes a pair of valve assemblies for regulating the flow of a power fluid into and from the piston cylinder. Pressurization and depressurization of the diaphragmmatic pilot, as regulated by a control fluid flow independent of the power fluid flow, operates the power fluid inlet and outlet valve assemblies. This pressurization and depressurization of the pilot is regulated by control fluid inlet and outlet valve assemblies, these assemblies being cam actuated by the piston upon completion of the power and return strokes. Exhaust of the power fluid from the cylinder is regulated by a throttle assembly with the length of the stroke of the piston determined by a stroke control assembly. Accordingly, the piston cyclic rate and stroke can be independently adjusted presenting a pump actuator capable of a finely tuned control of the chemical injector attached thereto.

Abstract: A pneumatically actuated diaphragm type metering pump is controlled by a pneumatic control circuit including a pilot actuated two position valve for pressurizing and venting the pump power piston chamber and which is controlled by a second pilot actuated two position valve. Timing chambers and a flow control valve in the control circuit operate to vary the frequency of the pumping cycle. The control circuit is included in a manifold assembly made up of a series of circular plate members assembled in staked relationship and including all of the fluid passages of the control circuit as well as the pneumatic timing chambers. The manifold assembly is mounted directly on an end wall of the pump body which provides for a single control fluid inlet passage and a single discharge passage for venting control and power piston fluid from the pump.

Abstract: A power fluid system for a vehicle embodying a two-fluid pump which utilizes an existing source of fluid under pressure is provided. The existing source of fluid enables a second source of fluid under pressure to be established through the two-fluid pump. Vehicles often require high pressure fluid to operate auxiliary equipment such as traction or anti-skid units, limited-slip differentials, and hydraulic load-leveling systems. More specifically, the two-fluid pump is a linear pump operated by fluid under pressure from the power steering pump of the vehicle. The two-fluid pump can supply a different fluid under higher pressure for the auxiliary equipment, as required. The pump is pulse cycled quickly to provide adequate quantities of both sources of fluids with the use of small capacity accumulators.

Abstract: A fluid actuated pumping system for producing fluid from a subsurface reservoir through a wellbore communicating therewith. A conduit extends from the surface, downhole to the pump. The pump includes an inner piston reciprocatingly received within an inner barrel, an annular piston reciprocatingly received within an outer barrel, and energy storage means connected to the pistons by which energy is stored when one of the pistons is forced to move downhole. The inner piston divides the inner barrel into an upper and lower chamber, and check valve means associated therewith enables reciprocation of the piston to cause one way flow to occur into the lower chamber, and from the lower chamber into the upper chamber, where the liquid is lifted through the conduit and to the surface of the ground. The conduit is also flow connected to the annular piston so that when fluid pressure is applied thereto, both pistons are forced in a downhole direction to store energy.

Abstract: An oil level control system uses an available pressure source to operate a fluid motor which is integrally connected with a reciprocating fluid pump. The pump has an inlet passage disposed at the desired oil level in a primary reservoir. A pair of one-way valves cooperate with the pump to draw oil, above the desired level, from the primary reservoir and deliver the oil to a secondary reservoir. A restricted drain back passage permits the fluid to return to the primary reservoir to ensure that the desired level is maintained. The fluid motor is connected with an accumulator such that the initial portion of the stroke is operated by the pressure source of the pump stroke. The motor is driven by pressurized fluid in the accumulator.

Abstract: Apparatus for sampling and disposing of water which has been separated from a water polluting element, the latter being lighter than the water. The apparatus includes an elongated upright caisson or pile which is disposed in a body of water, and which is adapted to contain a quantity of the water as well as the pollutant element. A submerged sampling apparatus is positioned at the lower end of the caisson and is actuated by gas pressure controlled from the water's surface to periodically withdraw a measured sample of the pollutant free water to assure its purity.

Abstract: Apparatus for converting energy contained within a stream of gaseous refrigerant to mechanical work. A refrigerant motor utilizing a diaphragm dividing a chamber into an equalizing chamber and a driving chamber is utilized with appropriate valve means causing the refrigerant to flow into and out of the driving chamber. A rod connected to the diaphragm reciprocates to deliver work to the appropriate work piece. Both rocker arm and spool valve embodiments are shown for providing the appropriate valve arrangements.

Abstract: Apparatus and a method for utilizing energy from a high temperature source such as a solar collector to both provide heat energy to a low temperature source such as a body of water and to accomplish mechanical work utilizing a refrigerant motor. The refrigerant motor may be coupled to a pump for circulating refrigerant within a closed loop system such that the apparatus and method requires no power source other than the high temperature source.

Abstract: An oil well pump which uses a pair of vertical hydraulic pistons to raise a cross beam. The polish rod is secured to the cross beam. At the top of the stroke automatic limit switches reverse the hydraulic fluid flow to allow the polish rod to descend and complete the pumping cycle.

Abstract: A fluid pump assembly having a body provided with a fluid chamber and a passage having an orifice, the passage connecting the chamber to a conduit carrying a pressurized flow of fluid. Pump apparatus has an inlet connected to a fluid additive supply, and an outlet which communicates with the conduit for feeding the fluid additive to the conduit. Control apparatus includes a dump passage communicating with the chamber and has a cross section larger than the orifice. A dump valve controls the flow of fluid through the dump passage to regulate the fluid pressure in the fluid chamber, and motor apparatus operatively connects the pump apparatus and the dump valve. The motor apparatus is responsive to the fluid pressure in the fluid chamber for operating the dump valve and actuating the pump apparatus to pump fluid additive through the outlet.

Abstract: A compressed-air operated dispenser for continuously dispensing a substance enclosed in a container, and in particular a viscous or paste-like substance, comprising an outlet passage extending from container to an outlet; a valve which normally closes the passage; a compressed-air operated piston arranged to exert pressure on a substance in the passage and to open the valve; and a trigger means for initiating the supply of compressed air for the purpose of operating said piston.In accordance with the invention there is provided a second valve arranged to move the piston to a starting position in which a pressure-actuating chamber is closed on one side of the piston with the exception of a passage through which compressed air can be forced into the chamber to cause the piston to move to a first terminal position. In this position the substance is subjected to pressure and the valve is opened and the piston ceases to act on the second valve.

Abstract: A vacuum motor operatively connected to a slave cylinder operates same via pressure differential variations across a reciprocatable vacuum motor piston to pump working fluid from a reservoir to an accumulator through two one way valves. The pressure differential variation can be derived from gear changing of the vehicle, induced through a three way electromagnetic valve controlled by a circuit characterized by either an unstable multivibrator, a dual stable multivibrator, a thyristor or a self maintaining relay, or induced through a purely mechanically operated valve characterized by lost motion and snap action position maintain devices. A pressure relief valve may be provided which dumps excessive pressurized fluid in the accumulator and returns same to the reservoir.

Abstract: A fluid-actuated, such as a pneumatically actuated, hydraulic pump of either the single acting or the double acting type is controlled in its operation by a main valve member which has two connecting compartments the fluid in one of which is always at the atmospheric, and in the other always at a superatmospheric, pressure. The main valve member has two end faces, one larger than the other, the smaller being always acted upon by the superatmospheric pressure of the fluid and the larger one intermittently. An auxiliary valve member controls the admission of the pressurized fluid to the larger end face and is open only during the reversal of the hydraulic pump from suction to pumping stroke, while the pressure acting on the larger end face is relieved during reversal from the pumping to the suction stroke. A duct communicates one or the other of the connecting compartments of the main valve member which an actuating compartment of an actuating unit, depending on the position of the main valve member.

Abstract: A fuel injection system for an internal combustion engine is described, which provides for independent, flexible control of timing as well as quantity of fuel injected. The system is programmable for torque shaping and adaptable to a wide range of engine sizes. It uses piezoelectric valves for controlling injection timing, a shuttle, fuel meter and a gas driven high pressure pump for injecting the fuel into the cylinders.

Abstract: This hydraulic engine utilizes two sets of hydraulic cylinders connected to a shaft so as to be alternately pressurized as the shaft is reciprocally driven by a pair of conventional internal combustion chambers. The outlets of all hydraulic cylinders are connected to a common output line via valves. During each power stroke certain of the hydraulic cylinders being pressurized are selectively disconnected (depressurized) from the output line. This effectively decreases the load on the driving chamber, and insures a relatively constant, high pressure hydraulic fluid output level despite changes in supplied force during each power stroke. The selective cylinder disconnection may be implemented programmatically in response to changes in engine parameters such as combustion pressure. The engine also includes a pump for supplying input hydraulic fluid to each set of cylinders while that set is not being compressed. The input fluid force is additive to the power supplied by the operative combustion chamber.

Abstract: A fluid operated hydraulic pump of the type using air pressure to produce high pressure hydraulic fluid wherein an air pressure driven motor and a hydraulic pump are positioned in adjacent axially aligned relationship and the air motor includes a reciprocating piston which drives the hydraulic pump. The air motor includes an exhaust passage having an expansion chamber therein for receiving exhaust air flow and including a plurality of baffles therein, the expansion chamber and the baffles functioning in combination to reduce the noise generated by the air motor without the use of other muffling material thereby avoiding undue back pressure in the air motor and increasing the speed and efficiency and operation of the air motor and the pump.

Abstract: A pneumatic-hydraulic pumping device including a jacket member, a cap member mounted at one end of the jacket member and an hydraulic head member mounted at the opposite end of the jacket member. An air head member is mounted in the jacket member intermediate the cap and hydraulic head members to form an air piston chamber between the cap member and the air head member and an hydraulic fluid reservoir space in the jacket between the hydraulic head member and the air head member. An air piston means including a piston head and a piston rod fastened thereto is mounted for reciprocal movement in power stroke and exhaust directions inside the air piston chamber with the piston rod being slidably mounted in the air head member. An air piston return means is mounted in the jacket for moving the piston means in the exhaust stroke direction. The air head member is connected to a source of air pressure by a conduit means.

Abstract: A reciprocating pump for liquids has a shuttle valve for directing motive fluid alternatively to small- and large-area faces of a piston. The motive fluid directed to the small-area face acts as a spring for causing reciprocation.

Abstract: A new heat engine in which liquid moves in a tube, one end of which is closed. The tube is heated at the closed end, and the liquid oscillates along the length of the tube. When the liquid interface enters the hot section, some of the interface vaporizes, so that the pressure in the space between the interface and the end of the tube increases, and the interface is forced back into the cooler section of the tube. The vapor then condenses, the pressure falls, and the liquid moves back toward the hot end.The longer the tube in relation to size of the hot section or "boiler," the greater the momentum of the liquid when it enters the boiler, and the higher the peak pressure ratio which is developed. High pressure ratios are essential for efficient operation. It is also generally necessary for the boiler walls to be heavy enough to "store" the heat required for one complete cycle, and to be able to reject it to the water during the very short time that the interface is within the boiler.

Abstract: A pressure fluid engine of single acting cylinder type has a directional control valve and a master valve with a spool and two valve seats. The spool is formed on a piston rod extending from a piston in the cylinder, the rod passing through a cylindrical disc of the directional control valve. One of the valve seats is provided in the disc to unseal the pilot operating fluid when it cooperates with the spool at a dead point. Another valve seat for the spool is provided in one of the valve chambers of the directional control valve to unseal the pilot operating fluid when it cooperates with the spool at the other dead point. The directional control valve is actuated by means of directional control of a pilot operating fluid with the master valve, in order to reverse the direction of the piston when the piston reaches one of the dead points.

Abstract: The method and apparatus for producing an oil well, by the provision of a pumpjack unit which reciprocates an engine assembly located within the upper extremity of a wellbore. The engine assembly has a power piston which hydraulically drives a lift piston by means of hydraulic fluid being transferred therebetween. The lift piston is directly attached to and reciprocates a string of sucker rod, which in turn reciprocates the downhole production pump.The hydraulic fluid associated with the engine assembly is contained within a closed system, and the relative sizes of the power and lift pistons are of a ratio to cause the lift piston to travel a greater distance respective to the power piston, thereby enabling a relatively short stroke of the polish rod to impart the piston of the subsurface pump with a relatively larger stroke.

Abstract: A fluid pressure power plant which converts heat energy, externally generated, to high hydraulic pressure. The system generates heat energy in the form of steam or hot gas, supplies the heat energy to a double-acting intensifier piston which converts the heat energy to high hydraulic pressure which is stored in an accumulator. The high pressure hydraulic energy stored in the accumulator is used to drive hydraulic motors or turbines through hydraulic output control valves. The system operates on a demand cycle in that no energy input from the heat generator and power conversion piston is necessary until there is some demand for power output from the hydraulic accumulator, once said accumulator is fully charged.

Abstract: A hydraulic system and latching mechanism for a cab tiltably mounted to the chassis of a vehicle. The cab is normally disposed over the engine of the vehicle and is pivotally attached to the chassis at its forward end for movement through 90.degree.. The cab is powered by an air-motor-actuated hydraulic pump which energizes lifting cylinders disposed between the chassis and cab. When the system is energized, a hydraulically actuated latch is released prior to commencement of the tilting movement of the cab. A direction-control valve is employed which, when in the neutral or closed position, utilizes the pressures generated in the hydraulic system by the weight of the tilted cab in certain positions to assist the valve in sealing the reservoir port in the valve against leakage thereby preventing the cab from creeping.

Abstract: The device is an air driven piston in a cylinder driving a pump. A shuttle valve is provided to control the admission of air under pressure to, and exhaust from the cylinder. The shuttle valve is a double ended piston operating in coaxial bores with a stem part of smaller diameter between the ends. The air passes to the cylinder through the bore around the intermediate part of the double ended shuttle valve. The piston at one end of the shuttle valve has greater area exposed to pressure than the area of the piston on the other end of the valve. The shuttle valve is operated by one or more pilot valves that are actuated by the main piston. The shuttle valve is shifted by controlling the pressures acting on the parts of the pistons having exposed areas of different sizes.

Abstract: A high pressure pumping apparatus which incorporates a chamber adapted to be filled with a fluid to be pumped, a solid, nonyieldable reciprocating member and an opposing nonyieldable member. A resilient plug having a dished out portion is captured between the two members. The dished out portion is contacted and seals to define a closed chamber at the dished portion which chamber reduces in size as the nonyieldable members are relatively moved. A small passage communicates with the dished out chamber in the resilient member to draw fluid therefrom through a check valve mechanism. The apparatus is particularly able to pump extremely small controlled volumes of fluid at very high pressures. A first version thereof supports the resilient member on a solid piston rod which moves toward a fixed metal member. A second version utilizes a diaphragm motor and also discloses an exposed push rod which gives an external indication of operation of the equipment.

Abstract: A unit injector for a diesel engine wherein a spool valve body is connected with a pressurizing chamber in a main body so that fuel to be supplied from a fluid element is supplied into the pressurizing chamber to affect the injection stroke of a pump plunger and the spool valve is actuated by the supplied fuel pressure to be supplied by the fluid element.