Matches 1 - 50 out of 280 1 2 3 4 5 6 >
Match Document Document Title
7410012 Hydraulic automatic boosting pump  
A hydraulic automatically-pressurizing pump comprises an intermediate fastening connector, a reversing valve, a mechanically-controlled automatic direction-reversing device, a power cylinder, a...
7367785 Reduced icing valves and gas-driven motor and reciprocating pump incorporating same  
A valve for a gas-driven motor and a valve assembly and reciprocating pump incorporating the valve are provided. The valve includes a shiftable valve for alternatively supplying a motive gas...
7261088 Internal combustion engine hydraulic fuel pump  
An internal combustion engine fuel pump having at least one cylinder, in which a variable-volume pump chamber is defined; a movable piston defining the bottom of the pump chamber; at least one...
7214315 Pressure exchange apparatus with integral pump  
A pressure exchange device is provided that utilizes an integral high pressure boost pump that is in fluid communication with a pressure exchange unit. An optional low pressure boost pump unit may...
7194853 Pressurizer for a rocket engine  
A pump for pressurizing a fluid includes an engine portion including a first pressure vessel, a first piston movable inside the first pressure vessel, at least two pressurant entrance valves...
7175395 Pressure enhancer value system  
A system to intensify pressure supplied by a conventional pump where a piston assembly having two piston members at opposite ends is positioned in a pressure cylinder. The laterally outer...
7082750 Pressurizer for a rocket engine  
A pressurizer for pressurizing a fluid includes: at least two storage tanks, where, for each storage tank, the pressurizer further includes: a propellant entrance valve, a propellant exit valve, a...
7021909 Oscillator for pneumatic pump having single valve  
A pneumatic oscillator for providing pumping force to a pump. The oscillator has a single valve for controlling both the rate of oscillation of the oscillator and the flow of air. The valve...
6988508 Device and method for the pneumatic control, and regulation of hydraulic fluid flows  
The invention relates to a pneumatic open- and closed-loop control apparatus ( 10 ) for flows of pressure fluid, having one inlet conduit ( 14 ), two outlet conduits ( 16, 18 ), and one venting...
6962487 Fluid driven pump with improved exhaust port arrangement  
A fluid driven pump. One embodiment of the fluid driven pump may include first and second diaphragms supported within a housing assembly such that first and second fluidtight expansion chambers are...
6905314 Pump having flexible liner and compounding apparatus having such a pump  
A pump has a flexible liner which is expanded and contracted by application of positive and negative fluid pressure for receiving and discharging fluent material. The liner is received in a rigid...
6874997 Pump system using a control fluid to drive a switching valve mechanism for an actuating fluid  
There is provided a pump system excellent in a maintenance ability and compatibility. The pump system comprises a pump ( 1 ) for transferring a liquid by alternately supplying air to air chambers (...
6773226 Rotary work exchanger and method  
An energy exchanger device can be used for exchanging pressure energy from one fluid to another, or may act as a hydraulic compressor or fluid driven pump. A preferred device uses a jet nozzle to...
6685443 Pneumatic reciprocating pump  
A pneumatically-actuated reciprocating fluid pump and shuttle valve combination operates in an “air-assist” mode and a “non-air-assist” mode. In the non-air-assist mode, the shuttle valve...
6644941 Apparatus and method for reducing ice formation in gas-driven motors  
A method for reducing ice formation in a gas-driven motor and a reduced-icing, gas-driven motor are provided, the motor having a housing with a first pressure chamber and a second pressure chamber....
6644940 Restarting device for a fluid operated double diaphragm piston pump  
A restarting device of a pump including a center rod defining fluid delivering chambers and driving chambers 11 b and 12 b . The restarting device of the pump further includes: a change-over...
6644930 Method and arrangement for pumping a material using a dual chamber pump system  
A pumping method and arrangement, in which at least two chamber pumps (A, B) are operated in order to achieve a constant output flow. In the pumping procedure and arrangement, the entry chamber (...
6629826 Micropump driven by movement of liquid drop induced by continuous electrowetting  
The present invention relates to a micropump which is driven by movement of a liquid drop based upon continuous electrowetting actuation. The continuous electrowetting means a phenomenon that the...
6619932 Restarting device of a pump change-over valve which induces a pressure difference within the pump change-over valve to remove the latter from an intermediate stalled position  
A restarting device of a pump change-over valve in a pump is provided, in which the pump includes; a pump main body 1 and a change-over valve 2 . The change-over valve 2 is provided with a...
6582205 Fluid motivated grease/water pumping and separating system  
A grease/water pumping and separating system is provided with a pump mechanism that utilizes a motivating fluid to pump a grease/water mixture. The mixture is sucked into and discharged out of a...
6547537 Air operated radial piston and diaphragm pump system  
Three or more diaphragm pumps ( 12,14,16 ) are interconnected to sequentially receive an activation fluid from corresponding piston and cylinder pumps ( 18,20,22 ) synchronized by a control...
6491813 Equipment for desalination of water by reverse osmosis with energy recovery  
The equipment for desalination of water by reverse osmosis comprises: a pump 1 for drawing the water to be salinated, a high pressure pump 25, a cylindrical block 8 housing two pistons 3, 4 ...
6478552 Fluid motivated pump  
A device for pumping a stock fluid by supplying and discharging a motivating fluid to a unit is described. The device develops the suction and discharge of the stock fluid through the motion of a...
6474961 Compact dual diaphragm pump  
A dual diaphragm pump includes a central housing having a pair of opposed housing surfaces, each surface having a housing diaphragm recess and a pair of housing valve recesses, and a pair of...
6447259 Pressure energy recovery device  
An energy recovery device includes at least one cylinder, a piston slidable in the cylinder, a first valve for selectively connecting one end of the cylinder to waste liquid at a first relatively...
6435843 Reciprocating pump for feeding viscous liquid  
Two cylindrical pump cylinders are mounted end-to-end. A first piston is placed in the first cylinder, a second piston is placed in the second cylinder, and the pistons are interconnected. In one...
6241487 Fluid powered diaphragm pump  
A fluid powered diaphragm pump is provided which includes three means for supplementing the pilot valve signal to the main fluid valve spool. The means include a cross porting of the main fluid...
6193476 11/2 Piston force pump  
A deep well fluid pump which enables the pumping of fluid with much less energy which includes a power column of fluid of sufficient volume, which communicates to the under side of the lifting...
6168394 Air driven double diaphragm pump  
A double diaphragm pump driven by alternating charges of air includes air chambers and pump chambers to form pump cavities. Diaphragms extend across the pump cavities and are held by their...
6079959 Reciprocating pump  
Pumps of this invention comprise a pump housing having at least one pressurizing chamber disposed therein, and a pressurizing member is disposed within the pressurizing chamber. The pressurizing...
6059546 Contractile actuated bellows pump  
A pump for impelling a fluid includes a first variable volume, the first variable volume having a first inlet for allowing the influx of the fluid into the first variable volume and a first outlet...
6004105 Diaphragm pump with adjustable stroke length  
A fluid powered diaphragm pump with an adjustable stroke is provided. The stroke of the pump is adjusted by providing an inner diaphragm plate assembly that includes a retractable piston. The...
5961300 Diaphragm pump plural component dispensing system with integrator  
A relatively inexpensive and easy to operate plural component dispensing apparatus is made up of one or more double sided pumps, such as an air-operated double diaphragm pump. The manifolding on...
5957670 Air driven diaphragm pump  
A pump having a center section including an actuator housing and an air valve is arranged with air chambers to either side of the actuator housing. Diaphragms are associated with the air chambers...
5944045 Solvent circuit  
A circuit is provided for the circulation of solvent to and from a valve having a movable component and a housing for movably housing the movable component. The movable component has a first...
5934885 Reagent pump assembly  
A reagent pump assembly for metering precise volumes of fluids, such as reagent, for an analytical instrument, such as a clinical hematology or flow cytometer instrument. The assembly includes a...
5893707 Pneumatically shifted reciprocating pump  
A pneumatically actuated reciprocating fluid pump and spool valve combination is pneumatically shifted by pressurized air that exhausts from a respective pressurized bellows, diaphragm, or piston...
5860794 Double diaphragm pump with air valve block moving in a rectangular pattern  
An air operated double diaphragm pump is provided with an air valve assembly which allows the valve cup to move in a rectangular pattern.
5848878 Pump with improved manifold  
A fluid pump with an improved manifold including a pump housing; an inlet manifold flow connected to the pump housing, the inlet manifold including an inlet manifold body, having a first end, a...
5833439 Slide valve of a gas driven pump  
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...
5816778 System for controlling the stroke length of a double-diaphragm pump  
A control system for controlling the stroke length of an axially reciprocating shaft in a double-diaphragm pump between a leftmost shaft position and a rightmost shaft position. In one embodiment,...
5772412 Pump incorporating pressure-regulated venting means  
The invention provides a pump comprising at least one piston (26, 28) movable in a reciprocating manner within a chamber (12), sealing means (32a, 32b) located between the piston (26, 28) and the...
5758563 Fluid driven reciprocating pump  
A fluid-driven reciprocating pump includes a housing and a reciprocating assembly defining first and second working fluid chambers. The housing includes an inlet and an outlet for introduction and...
5711658 Diaphragm pump with improved flow manifolds  
A diaphragm pump including a pump housing having a first housing side and a second housing side; a first unitary manifold flow connected to the first housing side; a second unitary manifold flow...
5707217 Pressure transfer modules  
The invention comprises an improved pressure transfer module having, in one embodiment, two double-diaphragm pumps each having its diaphragms connected to one another by a respective drive shaft...
5664940 Gas driven pump  
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...
5651389 Method and apparatus for controlling tank vapors  
A method and apparatus are shown for controlling tank vapors on a petroleum storage tank of the type having a tank vapor line which leads from the storage tank for transporting relatively low...
5649813 Chamber insulation for prevention of icing in air motors  
Insulation is provided in the form of wall insulation, piston or diaphragm insulation and/or piston rod and/or diaphragm washer insulation to increase the temperature in the working air chamber of...
5622484 Valve arrangement for a condiment dispensing system  
New valves to allow or prevent material flow through a conduit are disclosed. Such valves comprise a valve seat having a longitudinal axis, defining a through opening and including a seating...
5620746 Method and apparatus for reversibly pumping high viscosity fluids  
A method and apparatus for pumping and recapturing high viscosity paints. The apparatus comprises a double diaphragm pneumatic pump having means for controlling the air exhaust rate from the...
Matches 1 - 50 out of 280 1 2 3 4 5 6 >