Abstract: An artificial lift system may include a rodless hydraulic pump actuator including an actuator housing assembly, an actuator piston assembly supported for reciprocal translation stroke movement relative to the actuator piston assembly, an actuator piston assembly production fluid passage extending through the actuator piston assembly, and a tubular coupling below the actuator housing assembly having a coupling flow passage to pass production fluid into the actuator piston assembly production fluid passage.

Abstract: A double-acting reciprocating pump comprises a piston assembly comprising at least one piston disposed within at least one piston cylinder for undergoing opposite reciprocal movements within said at least one piston cylinder, an upper pump chamber disposed above the piston, and a lower pump chamber disposed below the piston. A fluid inlet is fluidically connected to one of the upper and lower pump chambers so as to supply fluid thereto, and a fluid outlet dispensing port is defined within a lower end portion of the double-acting reciprocating pump assembly for permitting fluid to be dispensed out from the double-acting reciprocating pump assembly during both of the opposite reciprocal movements.

Abstract: A fluid pressure feeding device includes: a follower plate that is inserted into a tank, that applies a pressing force to a fluid, and that has an opening for pumping up the fluid from an inside of the tank; a pump having a primer plate configured to exhibit reciprocating movement to pump up the fluid in the tank into a pump internal space; and a position control unit configured to control a position of the primer plate within a range of the reciprocating movement. An outer shape of the primer plate substantially matches a shape of the opening of the follower plate, and the position control unit is configured such that the primer plate is positioned in the opening of the follower plate when the follower plate is taken out from the tank.

Abstract: A method of treating a semiconductor device is provided including the steps of loading the semiconductor device in a processing chamber, pressurizing the processing chamber by supplying a processing gas from a pressure chamber to the processing chamber, performing a thermal anneal of the semiconductor device in the processing chamber, and depressurizing the processing chamber by supplying the processing gas from the processing chamber to the pressure chamber.

Abstract: The present invention teaches providing heating elements into the nose of an intermediate distance piece of a cryogenic reciprocating pump in order to warm the piston packing seals of the pump. The heating elements increase the temperature of the piston packing seals to limit deformation of the seals while the pump is in operation. In addition, a warm, dry vapor purge may be provided to the interior of the intermediate distance piece to reduce or eliminate rime from interfering with the piston packing seals.

Abstract: A supercharged internal combustion engine including a pressurized fluid outlet, the engine comprising a two-ended piston, with one end received in a combustion chamber, and another end received in a hydraulic chamber. The piston further including a portion intermediate the two ends and received within an air chamber, and the air chamber has an air outlet communicating with a combustion air inlet to the combustion chamber.

Abstract: The invention relates to a hydraulic device with a supply line for pressurized hydraulic fluid and with a lubricating pump that is connected to the supply line in a fluidic fashion. The lubricating pump comprises a hydraulic inlet, a pump element for conveying a lubricant from a reservoir to at least one lubricating point of the hydraulic device, and mechanism for producing a pump stroke of the pump element. The mechanism for producing a pump stroke comprises a base body, a piston unit movable in the base body, and a reversing mechanism for reversing the direction of movement of at least one element of the piston unit.

Abstract: A hydraulic oil well pumping installation includes a down hole pump positioned down a well, the down hole pump including a master cylinder and at least one slave cylinder in axial alignment with the master cylinder. A master piston is positioned in the master cylinder and divides the master cylinder into a first portion and a second portion. A slave piston is positioned in the at least one slave cylinder and divides the slave cylinder into a first portion and a second portion. The slave piston is connected by a rigid linkage to the master piston, such that movement of the master piston results in movement of the slave piston.

Abstract: Improvements in product water throughput from a reverse osmosis (RO) membrane achieved by thinner feed spacers in the RO element (22), enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure, and fluid pulsing of the RO element feed stream. These features are preferably combined to optimize the performance and cost per unit volume of water produced. The system of the invention preferably comprises a dual head reciprocating pump (20), an RO element (22) with a housing, and a differential pressure activated (“DPA”) valve (24). The DPA valve (24), in combination with offsetting fluid pressures on the two pump heads (28, 30), generate energy recovery. The frequency and amplitude of the reciprocating pump (20) create a pulse wave in the RO element (22) that improves permeate quality and throughput.

Abstract: Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure, and fluid pulsing of the RO element feed stream. The system of the invention preferably comprises a dual head reciprocating pump, an RO element, and a differential pressure activated (“DPA”) valve. The DPA valve, in combination with connecting the two pump heads to reduce required pump pressures, generates energy recovery. The frequency and amplitude of the reciprocating pump create a pulse wave in the RO element that improves permeate quality and throughput. A control system preferably monitors system parameters to optimize the reciprocating pump speed and amplitude in order to obtain maximum throughput and permeate quality from any given RO element configuration. Also a highly compact, portable RO system comprising a piston and a DPA valve.

Abstract: The present invention relates to hand held pump device. Such pump device includes a small lightweight motor. This motor can be manipulated by way of a hand grip. This hand grip includes a throttle trigger secured at an inner portion of the grip. A pump, with an inlet and outlet, is interconnected to the motor via a powered drive shaft. A load bearing support is positioned about this pump and secured to the lower extent of the motor. The load bearing support enables the entire pump device to be rested upon a level surface.

Abstract: A pressure intensifier for pressurization of a medium is provided, comprising a low-pressure cylinder (1), in which a low-pressure piston (2) is axially displaceable, and two high-pressure chambers (3, 4) which are each arranged coaxially with and on separate sides of the low-pressure cylinder (1) and which each exhibit an axially displaceable high-pressure piston (9, 10) which are secured to the low-pressure piston (2). A channel (16), provided with a nonreturn valve (17), connects the two high-pressure chambers. The area of one high-pressure piston (9) may be larger than the area of the other high-pressure piston (10).

Abstract: This invention provides the structure and operation of a double-acting, deep-well fluid extraction pump assembly which includes a power piston housed on top of a pumping piston along with a power control system. The pumping piston has a dynamic, reciprocating, bi-directionally self-cleaning, suction filter and houses poppet-type, uni-directional, fluid flow control valves that control the inflow and outflow of extracted fluid through the pumping piston. Gland membranes and a number of double-acting, lineal, fluid motor pistons divide the power piston into pressure chambers and into fluid conduits, with the divisions conjointly providing a path for inflow of hydraulic power fluid and a path for outflow of extracted fluid. The power control system includes a four-way, directional, flow-control valve for controlling cycling frequency, a timer and a flow switch for controlling recovery periods, an unloading relief valve for controlling fluid pressure and a flow-control valve for controlling pumping speed.

Abstract: A downhole hydraulically operated pump having a power piston reciprocated by alternating pressurized hydraulic fluid flow controlled at the surface by a hydraulic power control system which quickly reverses the flow direction. The pump housing, suspended in the well fluid of a cased well by a discharge tube, has a power piston chamber in which the power piston is housed, a production piston chamber in which a production piston is housed, and an intermediate fluid and gas collection chamber disposed therebetween. The power piston, production piston, and a suction filter are connected by an elongate hollow tubular piston rod to reciprocate together and the piston rod interior is in communication with the discharge tube. On up strokes, a series of check valves direct well fluid upwardly through the suction filter, the piston rod interior, the production piston, the production piston chamber, the piston rod interior, and into the discharge tube.

Abstract: A reverse osmosis system including a reverse osmosis filter with a reverse osmosis membrane and having an inlet port coupled to a source of feed water under predetermined pressure via a feed water inlet conduit, a product water outlet port for filtered outlet product water, and a brine outlet port for brine. A pump coupled into the feed water inlet conduit between the source of feed water and the inlet port of the filter and driven by the feed water under pressure. The pump increases the pressure of the feed water so that the reverse osmosis filter receives feed water at an increased pressure.

Abstract: A pressure intensifier is automatically driven repeatedly by compressed air from a compressed air source to produce highly compressed air for storage in a pressure chamber. The pressure chamber is selectively connected to or disconnected from a drive cylinder having housed therein a drive piston, under the control of a valve mechanism provided therebetween. By the actuation of the valve mechanism the highly compressed air stored in the pressure chamber is introduced into the drive cylinder to propel the drive piston, driving a nail or like fastening element into a hard receiving material such as concrete.

Abstract: The invention concerns a three- or four-stage gas compressor comprising two interconnecting compression units operated by hydraulic pistons; the first unit comprises a central hydraulic section flanked by two identical and symmetrical lateral sections each incorporating the first and third stages and operated by an alternating hydraulic piston; the second unit comprises a central hydraulic section of lesser diameter than that of unit one but with equal volume of oil, and two lateral sections similar to those of unit one but of lesser diameter. In the four-stage embodiment the lateral sections of unit two comprise between them the second and fourth compression stages, while in the three-stage embodiment the lateral sections of the second unit comprise only a single section each of the second compression stage. The oil chambers relative to each unit's central section interconnect--in either embodiment--by way of a compensating valve.

Abstract: A mixing pump includes a primary pumping chamber opposed by a secondary mixing chamber with primary and secondary pistons that are connected to each other and reciprocated in the chambers. Preferably, an actuator mechanism that drives the pistons is located between the chambers. An additive fluid is expelled from the secondary chamber through a mixing conduit into a mixing chamber where it is injected into a main fluid. The fluid mixture from the mixing chamber is then admitted to the primary pumping chamber from which it is expelled under pressure, preferably through an outlet valve in the primary piston. The fluid can be more thoroughly mixed as it passes through that valve and an annular passage surrounding this piston.

Abstract: The present invention relates generally to an improved fluid compressor and, more particularly, to such a compressor driven by a hydraulic motor, the working liquid of which serves as a coolant for the compressed fluid.

Abstract: A device for lifting liquid from boreholes comprises a pump which is located downhole in the region of a production formation and which consists of a fluid-actuated, double-action piston. The pump is connected by fluid pressure lines to a source of fluid pressure disposed above ground and a switching valve is connected to provide fluid pressure to alternate sides of the piston to effect reciprocation thereof.

Abstract: A multi-stage, reciprocating, positive displacement compressor, in which the various stages are coaxial one with the other. The compressor has a double acting, monorod, hydraulic jack and at least one piston guided to slide hermetically in a cylindrical chamber that is fixed to the support structure of the compressor; a cylindrical tubular liner that is fixed coaxially, at one extremity, to the aforementioned piston and points towards the jack. The cylindrical chamber is sealed, at the extremity pointing towards the jack, by a guide ring for the liner and, at the other extremity, by a disk. The piston and the cylindrical liner define in the cylindrical chamber the first and the second stage in the compressor. Third and fourth stages of the compressor are formed in a second cylindrical chamber coaxial with the first chamber and secured to the disk sealing the first chamber.