Abstract: The present disclosure provides a solar surface steering system including a solar surface; a base mount; a main body having a first rotary vane actuator configured to rotate the solar surface via a first rotating joint, and a second rotary vane actuator configured to rotate the main body of the hydraulic actuator via a second rotating joint connected to the base mount; a fluid mover operably connected to each of the first and second rotary vane actuators and configured to actuate the first and second rotary vane actuators; and a control system electrically connected to the fluid mover and configured to control operations of the fluid mover, wherein the first and second rotary vane actuators are affixed to each other and positioned such that a rotational axis of the first rotary vane actuator is orthogonal to a rotational axis of the second rotary vane actuator.

Abstract: A gas driven pump has a housing, first and second cylinders disposed within the housing, and first and second interconnected pistons having product intake and product exhaust positions disposed within the first and second cylinders, respectively. A slide valve has first and second positions for alternately pressurizing one of the first and second cylinders and venting the other of the first and second cylinders. A linkage moves the slide valve between the first and second positions thereof in response to movement of the first and second pistons. Over-center construction of the linkage prevents stalling of the slide valve, so as to assure reliable operation of the gas driven pump. The slide valve comprises a slide for placing an inlet port in fluid communication with an alternating one of two pressure/vent ports such that the slide valve scrapes frost build up from the pressure/vent ports as it moves thereover, thereby further enhancing reliability of the gas driven pump.

Abstract: A gas driven pump has a housing, first and second cylinders disposed within the housing, and first and second interconnected pistons having product intake and product exhaust positions disposed within the first and second cylinders, respectively. A slide valve has first and second positions for alternately pressurizing one of the first and second cylinders and venting the other of the first and second cylinders. A linkage moves the slide valve between the first and second positions thereof in response to movement of the first and second pistons. Over-center construction of the linkage prevents stalling of the slide valve, so as to assure reliable operation of the gas driven pump. The slide valve comprises a slide for placing an inlet port in fluid communication with an alternating one of two pressure/vent ports such that the slide valve scrapes frost build up from the pressure/vent ports as it moves thereover, thereby further enhancing reliability of the gas driven pump.

Abstract: A reciprocating primary fluid driven motor has a stepped piston in a housing having a center hanging actuator rod which extends into the piston to periodically cooperate with an axially shiftable connector member in the piston which operates valves which establish the reciprocating stroke of the piston by opening and closing valve members on the larger and smaller faces of the stepped piston. A block member with compression spring drivers pivotally mounted inside the piston slides on the actuator rod during movement of the piston. The drivers are compressed in response to spaced stops on the actuator rod during continued movement of the piston until a sudden over-center movement of the block member shifts the connector to operate the valve members to cause reciprocation of the piston. Quiet operation during shifting is provided by shock absorbers. No sliding seal with the actuator rod is necessary. Provision for bleeding air from the housing chamber facilitates startup.

Abstract: A switchover valve has a pair of levers on the valve piston which can be displaced against spring force through deadcenter positions to engage stops on brackets connected to the valve housing and traversed by the levers. A switching member in lost motion connection with a control rod connected to a working piston is articulated to the levers.

Abstract: A single-acting, gas-operated, pump method and apparatus including a pump body having a main chamber divided by a reciprocating piston assembly into a gas driving chamber and a liquid pumping chamber, a spring for biasing the piston assembly into one of its two end positions, a reciprocating control valve controlling the flow of driving gas to and from the gas driving chamber, a snap-acting spring mechanically coupling the control valve to the reciprocating movement of the piston assembly, and a counteracting spring for biasing the control valve toward one of its two positions.

Abstract: The liquid pressure capacity of a chemical injector pump is increased substantially by using high pressure gas to drive the gas motor. In one embodiment, the chemical injector pump includes a liquid pump end, a gas motor end, a low pressure position responsive valve, and a high pressure pilot operated valve manipulated by the low pressure valve for delivering high pressure gas to the gas motor. In other embodiments, the chemical injector pump includes a liquid pump end, a gas motor end, and a high pressure position responsive valve for directly delivering high pressure gas to the gas motor.

Abstract: The invention relates to a device for injecting a metered product into a main circulation of liquid, comprising a metering piston (28) coupled to a stepped piston (11) whose motion results from the pressure of the main fluid in a known manner. The piston (28) interacts with a metering cylinder (10) which is in permanent communication with the lower part of the liquid outlet chamber (8). The mixture of the products is thus confined to the outlet of the device, while no leakproof sliding of a component on contact with either of the liquid and product is necessary, and this eliminates the risks of abrasion of the seals due to deposits on the sliding component. In addition, since the inlet chamber (6) for the main liquid is annular, it permits a filter (33) to be easily installed.

Abstract: A double-acting, pneumatic, reciprocating diaphragm pump and reversing mechanism therefor including a pump housing including a pair of spaced apart chambers, a diaphragm member dividing each chamber into a driving section and a discharge section, a shaft interconnecting the diaphragm members and a protrusion extending from the shaft, fluid inlet and outlet manifolds interconnecting inlet and outlet ports, respectively, in the discharge sections and inlet and outlet valves in the housing for controlling fluid flow to and from the discharge sections, a driving fluid manifold interconnecting inlet-outlet port means in the driving sections, a control valve between the chambers including a valve element movable between two positions to alternately direct driving fluid to one of the two driving sections while also alternately venting the other one, a control valve accuating member mounted for movement and having means for contacting and moving the valve element and having surfaces for being contacted by the shaft p

Abstract: A single-acting, gas operated, pump method and apparatus including a pump body having a main chamber divided by a reciprocating piston assembly into a gas driving chamber and a liquid pumping chamber, a spring for biasing the piston assembly into one of its two end positions, a reciprocating control valve controlling the flow of driving gas to and from the gas driving chamber, a snap-acting spring mechanically coupling the control valve to the reciprocating movement of the piston assembly, and a counteracting spring for biasing the control valve toward one of its two positions.

Abstract: A liquid additive injection pump has a hydraulic motor comprising a differential piston assembly reciprocable in a housing under the urging of a primary liquid into which an additive is to be injected. The piston assembly carries valves which are responsive to movement of the piston assembly to open and close to effect the transfer of a primary fluid charge from the pump motor to a discharge passage and to effect reciprocation of the piston assembly. The motor piston is connected to a central axially disposed longitudinally extending piston rod which extends into an additive injection pump cylinder and engages a floating additive injection pump piston having a stack of additive pump displacement control washers engaged therewith and disposed on the piston rod. A spring biased toggle type linkage snaps the motor valves into open and closed positions to provide positive movement of the valve members.

Abstract: A series of toys having unique motions are activated by a fluid propelled propulsion device. The propulsion device includes a housing with a cylinder located thereon. A pressurized fluid reservoir connects to the cylinder via a valve. The valve has provisions for introducing pressurized fluid into the cylinder and exhausting pressurized fluid out of the cylinder. A piston is located in the cylinder and in response to introduction of pressurized fluid into the cylinder, moves in a power stroke. This is followed by an exhaust stroke wherein the piston moves in the opposite direction. A piston output member is associated with the piston and extends out of the cylinder. The piston output member moves linearly in response to movement of the piston in its power and exhaust strokes. A connecting mechanism connects the piston output member and the valve. The connecting mechanism includes a first movable member and a second movable member and a biasing member.

Abstract: A reversing mechanism for a reciprocating pump provided in a common housing or module removably secured to the pump body adjacent to the pump shaft. The module housing includes top and bottom pieces which slide together with suitable tongue and groove elements. The top piece houses a reversing valve, and has a slot on the underside thereof for receiving a yoke member of the reversing mechanism. The sides of the slot form bearing surfaces parallel to the longitudinal axis of the pump shaft. The yoke slides or reciprocates on these bearing surfaces. The bottom piece comprises a support for opposed snap-acting springs. The yoke has a pair of upwardly extending spaced arms for actuating opposite ends of the reversing valve when it reciprocates, and a pair of downwardly extending spaced arms for engaging a transverse pin in the pump shaft as the shaft reciprocates. A central pin in the yoke couples it to the snap-acting springs. A special nested bearing structure is provided for the snap-acting springs.

Abstract: A pneumatically operated diaphragm fuel pump comprising a ram actuated by a diaphragm and arranged in a drive chamber and a reversible lever subjected to the action of a tension spring for actuating suction and air-inlet valves. The lever is locked with respect to the ram for a given range of stroke of the ram and switching takes place only at the dead center positions of the diaphragm.

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 hydraulic engine having a fluid pump for pumping a fluid medium under pressure to a fluid motor connected to the pump for being actuated by the fluid medium under pressure received from the pump. A control system regulates operation of the pump and motor so as to permit appropriate variation of speed of an output shaft of the motor. The fluid motor is a reciprocating motor, the piston of which is connected directly to a mechanism for translating the reciprocating motion into rotary motion, while the reciprocating movement of the pistons simultaneously actuates valves for sequentially directing the fluid medium under pressure to opposite ends of the piston in order to obtain a double-acting piston and cylinder operation.

Abstract: A new control system is provided for a reciprocating fluid stroke motor of the type which is pressured at its rod end, reciprocation being achieved by intermittent exposure of its full blind-end face to the pressure fluid to overcome the pressure applied to its smaller rod-end face. The control means includes a valve for a passage through the piston, with adjustably-positioned trip-stops for shifting the valve between open and closed positions. The valve is biased to snap fully open when the piston movement toward its opening-stop opens it slightly and remain open until striking the closing-stop. Monostable or bistable trip-switch types of biasing means may be used, and unless one holding the valve closed with no fluid pressure is chosen, resumption of pressure supply after discontinuance will cause an initial retraction of the piston to its starting position, allowing time for the controlled apparatus to attain acceptable speed.