Matches 1 - 42 out of 42


Match Document Document Title
8939732 Multi-stage compressor  
Provided is a multi-stage compressor which includes: a first-stage compressing unit which includes a first compressing element with an impeller and a second compressing element with an impeller,...
8591199 Multi-stage compressor/driver system and method of operation  
An improved system and methodology for starting up a gas-turbine driven multi-stage compressor. The improvement involves isolating individual compression stages and creating positive pressure in...
8449274 Magnetic reciprocating pump  
A magnetic reciprocating pump includes a tube having ends defining intake and discharge ports, first and second magnetic plungers axially aligned within the tube of corresponding cross section for...
8292597 High-speed gear pump  
A gear pump comprises a casing having an inlet, an interior, and an outlet. An inlet gear is positioned at the inlet and pressurizes fluid received at the inlet. A drive gear is positioned at the...
8251678 Vacuum pump unit  
The present invention relates to a dry vacuum pump unit capable of achieving ultimate pressure of about 1 Pa. The vacuum pump unit includes a main pump (15) disposed at an outside-pressure side,...
8251149 Method and apparatus to transport subterranean oil to the surface  
A method to extract oil for a pool of oil in the ground utilizes an interconnected series of rotating helical blades extending from the surface of the ground through a canted bore to the pool of...
7393186 Multi-stage compressor  
A multi-stage compressor is disclosed, which comprises: two motion converters driven by one driving shaft and converting a rotary motion to a straight-line reciprocating motion; first and second...
7383967 Apparatus and methods for pumping high viscosity fluids  
A system for dispensing and filtering fluid is disclosed, in which the fluid flow path is substantially vertical from the fluid inlet through fluid dispense. Substantially all wetted surfaces are...
7275592 Oil well pump apparatus  
An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working...
6558135 Two stage oil free air compressor  
A two stage reciprocating piston oil free air compressor having an improved service interval. In a first stage, a first wobble piston is reciprocated in a first cylinder to compress ambient air to...
6558134 Fluid intensifier pump system  
An intensifier pump system includes a supply pump for delivering fluid products at an intermediate pressure. The products are delivered to one or more intensifier pumps that take advantage of...
6450772 Compact molecular drag vacuum pump  
A molecular drag vacuum pump configured for pumping a gas stream from an inlet to an outlet, the pump including a high-speed spinning disk having a channel formed in its edge, disposed within a...
6422838 Two-stage, permanent-magnet, integral disk-motor pump  
A two-stage, permanent-magnet, integral disk-motor centrifugal pump, has a housing having first and second suction ports and first and second discharge ports, the first discharge port being...
6158972 Two stage pulse pump  
A fluid actuated fuel pump assembly including a body 12 having saucer-like sections 54 defining separate concave inlet 14 and outlet 16 hollows and a cylindrical central section 52 defining a fuel...
5755561 Piston pumping system delivering fluids with a substantially constant flow rate  
A pumping system in accordance with the invention comprises n (n≥1) piston or diaphragm primary pumping modules (P1 to Pn) including each at least one pumping unit, connected by means of...
5049038 Fluid compressors  
A two stage fluid compressor is operated by a pneumatically operated relay valve controlled by a fluidic switching device in which switching pulses of pressurized control air are obtained...
4784579 Hydraulic-pneumatic power transfer unit  
Disclosed herein is a hydraulic to pneumatic power transfer unit which converts a high pressure oil flow into a flow of high pressure air by means of three stages of piston pumps and characterized...
4714411 Fluid pressure intensifier device  
A fluid pressure intensifier device particularly suited for intensifying the pressure of a gas has a plurality of piston and cylinder compression stages of sequentially reducing volume connected...
4679986 Energy conserving refrigeration apparatus and method  
An energy-conserving refrigeration apparatus which employs a atmospheric pressure and vacuum-pressure actuated partial compressor for a refrigerant gas in combination with a conventional prime...
4600365 Displacement pump for low-pulsation delivery of a liquid  
A low-pulsation displacement pump comprises two series-connected cylinders which are controlled by valves so that the delivery takes place only in one direction. The pistons of the cylinders are...
4093403 Multistage fluid-actuated diaphragm pump with amplified suction capability  
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...
4003679 High pressure pump with metering  
A pumping system is provided in which a low pressure metering pump injects fluid charges into a high pressure pump which in turn operates into a high pressure load. The high pressure pump is...
3637328 SLURRY-PUMPING MEANS  
A slurry-pumping means which comprises a driving pump, an intake diaphragm pump, an exhaust diaphragm pump connected therewith in series and an intermediate check valve, and driven by a fluid...
3586461 SONIC MULTISTAGE PUMP  
An electrohydraulic multistage pump is composed of a series of stages, each stage being connected to the next stage so that when an electric pulse is applied in a stage, fluid is displaced into a...
3548790 ROTARY VANE TYPE TURBINE ENGINE  
3359916 Fluid control structure  
3335667 Wave machine and means for raising water  
3306215 Continuous-feed reciprocating pump  
3276673 Contaminant free compressor  
3232524 Fluid compressor  
3227086 Deep well pump  
3204859 Gas compressor system  
3141604 Compressor supercharging system  
3010641 Plant for producing highly compressed air  
2997961 Pneumatic pumping apparatus  
2991003 Piston and compressor structure  
2970747 Compressor system  
2954155 Compressor  
2891718 Opposed free piston reciprocating gas compressor  
2849173 Compressor system  
2821142 Relay type free piston well pump  
2781831 Pumping assembly  

Matches 1 - 42 out of 42