Abstract: Apparatus for the injection of fuel into a gas turbine which is adapted to remove the fuel from the injectors when the turbine is to be stopped. Each injector provides separate, parallel fuel flow paths from a pair of fuel inlet connections toward a plurality of atomizing apertures. When the turbine is to be stopped, one of the inlet connections is connected to a source of compressed air and the other is connected to a sump for the fuel.

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: Disclosed herein is a fluid-actuated, diaphragm pump which is particularly adaptable for use as a fuel pump for a multi-cylinder, two-cycle internal combustion engine and which includes an inlet chamber, an outlet chamber, a first diaphragm separating the inlet chamber into a first pulse chamber and a suction chamber, and a second diaphragm separating the outlet chamber into a second pulse chamber and a pressure chamber. The two pulse chambers are connected to separate sources of regularly cycling or pulsating pressures which are at least 90.degree. out of phase from each other and the two diaphragms are oscillated sequentially, in response to the pressure variations in the respective pulse chambers, between a suction position and a pumping position whereby fluid is first drawn into the suction chamber through an inlet, subsequently pumped therefrom into the pressure chamber, and then pumped from the pressure chamber through an outlet.

Abstract: A means of damping cyclic fuel injection pressure drop in a constant-stroke, variable delivery flow rate injection jerk-pump for an internal combustion engine, consisting in slowing down fuel pressure drop at the end of every injection cycle by increasing the added pressure head losses of fuel backflow by a reduction of the free passageway cross-sections through which the fuel flows successively on its return path from the pump working chamber to the spill port.

Abstract: A vacuum control system is disclosed consisting of a pedal actuated valve connected between a source of air under pressure and a Venturi tube where the valve and the Venturi tube are enclosed within a base and a treadle member pivotally mounted on the base for actuating the valve. The Venturi tube has a port in which a vacuum is created upon actuation of the valve to its open position. Air ejected from the Venturi may be noiselessly diffused by porous filler material disposed adjacent the output side of the Venturi. Further, the ejected air is directed away from the foot and leg of the operator by enlarging the clearance between the forward edges of the treadle member and base while decreasing the clearance between the rear edges thereof when the treadle member is depressed to actuate the system.

Abstract: New combustors, and methods of operating same, which produce lower emissions, particularly lower emissions of nitrogen oxides and CO. Means and methods are provided for supplying separate streams of air to primary and secondary combustion regions of a combustor, and expanding combustion products when passing same from said primary combustion region to said secondary combustion region. In preferred embodiments, unheated air can be used in said primary combustion region, and/or a second stream of air mixed with said combustion products during said expansion thereof.

Abstract: An air supply system for supplying air to a periodically opened valve comprising a conduit for connecting the valve in continuous communication with a source of air and an expandable air storage chamber connected to the source of air and to the valve.

Abstract: The invention relates to apparatus for and the method of reversing the operation of a power piston in a power cylinder automatically to pump oil, corrosive or wax bearing fluids. The flow of high pressure fluid driving the piston in one direction may be reversed to drive the piston in the opposite direction at the end of the respective strokes by establishing a collapsible chamber for the high pressure fluid within the piston. This chamber is at least partially collapsed toward the end of each stroke by the stem of an auxiliary reversing piston striking a stop slightly before the end of the stroke to partially collapse said chamber and establish a further chamber on the opposite side of the reversing piston.

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: In a hermetically-sealed motor compressor having a vertically oriented crankshaft into which oil is centrifugally pumped from a sump, the oil pumping tube extending into the sump is cast as an integral part of the lower end ring of the rotor, providing a unitary rotor end ring and oil tube.

Abstract: A commutated electric motor, which motor is cooled by the fluid which it pumps. The motor has a molded end cover construction, the material being the bearing material, and providing for guiding of the brushes. Torsion springs are utilized as the sole biasing means and current carrying members for the brushes. Also, the fluid is pumped along a closed channel structure and directed against the brushes to increase endurance.

Abstract: A downhole, hydraulically actuated pump assembly of the free or fixed type which includes a control valve positioned above the engine, and a plurality of pistons connected together by a hollow connecting rod. The pistons are arranged to divide a production cylinder from an engine cylinder, so that the connecting rod is always placed in compression, thereby avoiding rod breakage. The hollow connecting rod is employed to supply power fluid to the lower engine, and the rod ends are arranged to have fluid pressure exerted thereagainst to improve the operation of the pump assembly.The production pump divides the engine into an upper and lower engine assembly so that the upper engine strokes the pump in a downward direction, while the lower engine strokes the pump in an upward direction.

Abstract: A method of generating power from wind comprising providing a turbine in an airstream with the turbine having a rotor with a plurality of blades and a stator with a plurality of blades upstream of the rotor. A portion of the ambient airstream is increased in velocity and reduced in pressure by passing such portion of the ambient airstream through the stator to provide an incoming airstream. The incoming airstream is passed through the rotor to drive the rotor and to provide an exiting airstream. The exiting airstream is conducted through a duct to increase the pressure and decrease the velocity of the exiting airstream, and subsequently the exiting airstream is discharged from the duct to the atmosphere.

Abstract: The system incorporates conical screens spaced along the producing tubing as mixing means to reduce the separation of gas and oil and enhances the lifting power of the gas. Supplemental lift devices are provided for non-flowing wells. The lift devices incorporate check valves in conjunction with the mixing means to lift the oil in stages. Motive power is provided by one or more jet pumps positioned in the producing zone and at vertically spaced points along the producing tubing.

Abstract: A variable capacity rotary screw compressor driven by an electric motor and having an adjustable slide valve for varying compressor capacity is provided with a control system for adjusting the slide valve to regulate compressor capacity and thereby maintain a variable system condition, such as gas inlet or outlet pressure or temperature, within a predetermined range. The control system comprises first means including a current transformer for sensing changes in motor current as compressor capacity varies and a current converter connected to the current transformer for providing a first electrical signal proportional to compressor capacity. The control system also comprises means for sensing changes in the particular system condition being monitored and for providing a second electrical signal proportional thereto.

Abstract: Deformable flexible tube constituting the body of a peristaltic pump having a stator and a rotor equipped with rollers progressively compressing the tube against the stator, said tube comprising two ribs extending along the length of the tube at points on the circumferential surface located on the same side of the line of contact of the inner walls when the tube is compressed, and symmetrical with respect to a plane perpendicular to this line of contact.

Abstract: A pump for pumping insulating oil for oil-filled electric cables in which a driven piston is within and spaced from a tubular bellows which is surrounded by an enclosure. The bellows forms a chamber with the enclosure which contains the cable oil, and the bellows prevents contact of the mechanical parts of the pump, other than an intake valve and a delivery valve, with the cable oil. Preferably, the space between the piston and the bellows is filled with oil to transmit motion of the piston to the bellows. The delivery valve is urged closed by a spring, and the intake valve has an element made of lightweight materials and is held closed by gravity and the cable oil pressure but opens by reason of cable oil pressure reduction and the static pressure of the cable oil fed to the intake valve. Also, a plurality of such pumps operable by a single drive mechanism and a method for evacuating gas from the pump and pump lines in which the delivery valve is operated by a magnetic field external to the valve.

Abstract: A fluid pump for use in explosive bore holes comprising an elongated outer housing having upper and lower ends and adapted to permit water to enter the interior thereof. A hydraulic motor is secured to and is positioned in the lower end of the outer housing. A pump housing extends upwardly from the hydraulic motor within the outer housing. A drive shaft rotatably extends upwardly from the hydraulic motor within the pump housing and has a rotor means connected thereto for rotation therewith. The rotor rotatably extends through a pump stator means which is positioned in the pump housing. A pair of hydraulic hoses are in communication with a source of hydraulic fluid under pressure and extend downwardly into the outer housing between the outer housing and pump housing. The hoses are fluidly connected to the hydraulic motor.

Abstract: A pump comprises a tubular resilient pump element alternately extended and relaxed for longitudinal deformation and reinforced by means of filaments arranged in helices, preferably with different helices of opposite hands present, whose pitch angle is other than arccot .sqroot.2 so longitudinal deformation will result in volumetric changes. Inlet and outlet valves ensure unidirectional flow through the pump element.To smooth out flow a similarly constructed accumulator element, whose reinforcement pitch angle is chosen with a value such that the pump and accumulator pitch angles are on opposite sides of arccot .sqroot.

Abstract: An air motor, responsive to change in pressure of a compressed air supply line acts to control the flow of hydraulic motive fluid to a hydraulic motor which drives the capacity control slide valve of a helical screw, rotary compressor feeding the supply line. To eliminate hunting of the slide valve which shifts in response to change in compressor load, a mechanical feedback from the hydraulic motor modulates the flow of motive fluid to the hydraulic motor.