Patents in subclass Pumps/By Controlling Drive Motor Motive Fluid
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 07175394 | Hydraulic multiphase pump The present invention provides a hydraulically driven multiphase pump system and methods for pumping a fluidstream from the surface of a well. The hydraulically driven multiphase pump system consists of two vertically disposed plungers.... |
02/13/2007 |
| 07096669 | Method and apparatus for the prevention of critical process variable excursions in one or more turbomachines Many variables in processes such as those using turbocompressors and turbines must be limited or constrained. Limit control loops are provided for the purpose of limiting these variables. By using a combination of closed loop and open... |
08/29/2006 |
| 07004727 | Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use Blood component processing systems and methods are coupled to a blood component processing device. The systems and methods include a fluid circuit that comprises at least one fluid pressure actuated pump station, at least one fluid flow... |
02/28/2006 |
| 06981848 | Methanol injection system and method to prevent freezing of a natural gas pipeline A system for injecting an injection fluid into a pipeline includes an injection pump, a timer for initiating sequencing of the pump, a control valve for controlling the flow of pressurized fluid to power the injection pump, a controller... |
01/03/2006 |
| 06846161 | Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use Blood component processing systems and methods are coupled to a blood component processing device. The systems and methods include a fluid circuit that comprises at least one fluid pressure actuated pump station, at least one fluid flow... |
01/25/2005 |
| 06790010 | Switching system for a reciprocating piston pump A pumping system. The pumping system has a cylinder pump, a first group of switching devices, and a second group of switching devices. The first group of switching devices enable the cylinder pump to pump the liquid by feeding the gas... |
09/14/2004 |
| 06752599 | Apparatus for photoresist delivery A controller for a photoresist dispense pump is described that actively monitors the operation of the pump and dynamically determines completion of the refill of the pump. In one embodiment, pressure measurements are made during the... |
06/22/2004 |
| 06733252 | Fluid-handling systems and components comprising a bladder pump, a methods therefor A fluid-handling system capable, in various embodiments, of storing, mixing, and dispensing fluids, and also regulating the flow of fluids. The system includes a cartridge having a non-expandable housing, and a bladder within the housing.... |
05/11/2004 |
| 06725940 | Foam additive supply system for rescue and fire fighting vehicles A system for supplying a pre-determined ratio of liquid foam concentrate and water to a mixing device immediately upstream from a fire fighting nozzle. The system is electronically balanced by measuring pressure from a plurality of... |
04/27/2004 |
| 6672841 | Pumping and metering device The present invention relates to a pumping device for delivering and metering fluids, in particular medical fluids such as dialysis fluids, with a piston unit having a driving device and a piston and with a membrane unit which has a... |
01/06/2004 |
| 06672841 | Pumping and metering device The present invention relates to a pumping device for delivering and metering fluids, in particular medical fluids such as dialysis fluids, with a piston unit having a driving device and a piston and with a membrane unit which has a... |
01/06/2004 |
| 06619318 | Multiple flow rate eductive dispenser A dispenser for dispensing at two flow rates eductively draws a chemical fluid such as a concentrated cleaning solution for diluting with a motive fluid such as water. Using eduction rather than gravity feed provides a consistent dilution... |
09/16/2003 |
| 06609898 | Process and device for pumping compressible materials with reduced pressure pulsation A hydraulic system for a reciprocating piston pump that includes an accumulator for producing a steady-pressure supply of compressible material to a distribution nozzle. The hydraulic system includes an adjustable means for constricting... |
08/26/2003 |
| 06592334 | Hydraulic multiphase pump The present invention provides a hydraulically driven multiphase pump system and methods for pumping a fluidstream from the surface of a well. The hydraulically driven multiphase pump system consists of two vertically disposed plungers.... |
07/15/2003 |
| 06558128 | Fluid well pumping system A fluid pumping system includes a number of stages. Each stage has a fluid chamber having a top end with an air aperture and a bottom end with a fluid apertures. An air line is connected to the air aperture, and a fluid input conduit,... |
05/06/2003 |
| 06454540 | Modular balanced foam flow system A liquid injection arrangement for inserting a foaming agent into water for a fire fighting application, or a similar use, requires that metered quantities of a liquid chemical foamant or other agent be injected into a conduit assembly... |
09/24/2002 |
| 06435838 | Fluid well pump A fluid pumping system includes a number of stages. Each stage has a fluid chamber having a top end with an air aperture and a bottom end with a fluid apertures. An air line is connected to the air aperture, and a fluid input conduit,... |
08/20/2002 |
| 06375432 | Pipeline air pocket detection system A method of detecting an air pocket in a concrete pump and minimizing the effect of the nozzle and boom reaction as the air pocket reaches the end of the boom. The hydraulic pressure of the pump is monitored to determine when a pump... |
04/23/2002 |
| 06328543 | Gear pump and replaceable reservoir for a fluid sprayer A gear pump and reservoir device for a fluid sprayer comprises a pump housing having a recessed portion for receiving and sealing thereto a fluid reservoir and a cavity for locating a drive motor and gears therein. The recessed portion... |
12/11/2001 |
| 06295913 | Air operated hydraulic torque wrench pump A hydraulic pump assembly (10) for powering a hydraulic torque wrench (24) is air-powered and has hydro-pneumatic control circuitry (39) which continues operation of an air motor (18) which drives the hydraulic pump (16) for a... |
10/02/2001 |
| 06227807 | Constant flow fluid pump The present invention is a means and method for providing constant output flow from a fluid pump. The invention does this by controlling the radial speed of the pump motor during discreet segments of the motor's 360.degree. angular/radial... |
05/08/2001 |
| 6158966 | Volumetric control of the flow of a filtering pump The present invention relates to a pump of resin deposition on a semiconductive wafer including a pump body divided by a membrane of definition of a resin dispensation chamber and of a control chamber and an element of filtration of the... |
12/12/2000 |
| 6155791 | Wet/dry glycol pump automatic shut-down system An automatic shut-down system for wet/dry glycol pump thereby providing a pump protection system located in the fluid circuit between the reboiler and glycol contactor elements of a gas dehydration system. The system includes a filter or... |
12/05/2000 |
| 6142750 | Gear pump and replaceable reservoir for a fluid sprayer A gear pump and reservoir device for a fluid sprayer comprises a pump housing having a recessed portion for receiving and sealing thereto a fluid reservoir and a cavity for locating a drive motor and gears therein. The recessed portion... |
11/07/2000 |
| 6132176 | Flow control sensor and method for filling of a filter press An air flow sensor and method for filling a filter press which detects slowing and/or intermittent stoppage of the feed pump and signals a controller associated with a pressure regulator to increase the pressure of the air supplied to the... |
10/17/2000 |
| 6126403 | Diaphragm pump A diaphragm pump is provided with a diaphragm defining a pump chamber and a drive chamber in the pump housing, a driving fluid is supplied to the drive chamber and a pump fluid is expelled from the pump chamber. The diaphragm pump is... |
10/03/2000 |
| 6126413 | Apparatus for use in liquid circulation system and method for using said apparatus The invention relates to an apparatus for use in a liquid circulation system of the kind comprising a primary circulatory circuit provided with a circulation pump and having a primary forward flow and a primary return flow, as well as a... |
10/03/2000 |
| 6053361 | Out-of-fluid detector for reciprocating pumps A dynamic displacement sensor for detecting an out-of-fluid condition in a liquid delivery system detects an increased amplitude of pump motion of a reciprocating air pump and provides an output signal upon detecting the increased... |
04/25/2000 |
| 5897295 | Timer controlled pneumatic water pump A pneumatic pump is provided including a housing with an inlet aperture and an outlet aperture. A one way valve is mounted on the inlet aperture. A tube has a first end connected to outlet aperture and a second end positioned distant the... |
04/27/1999 |
| 5897297 | Washing objects and recovering contaminants with optimized pump control The invention provides an apparatus for optimizing performance of a fluid pump having a supply port and a pressurized output port, comprising: a pressurized supply of a first fluid; a variable regulator coupled to the supply having a... |
04/27/1999 |
| 5888050 | Precision high pressure control assembly A precision high-pressure control assembly for supercritical fluids comprises a continuous flow system having a pressure control loop which includes a source of fluid communicating with a piston driven pump. A pressure sensor monitors the... |
03/30/1999 |
| 5879133 | Prevention of parameter excursions during process compressor surge in gas turbines A method is provided for controlling fuel flow to the combustor of a gas generator turbine during sudden changes in load or during a surge cycle of the process turbocompressor. Surge control is initiated by analog input signals emanating... |
03/09/1999 |
| 5842839 | Liquid supply system A liquid transfer system for liquids that are subject to solidification uses a pipeline, with compressed gas as the liquid displacement medium. The pipeline comprises a substantially rigid outer line and a flexible inner hose, forming... |
12/01/1998 |
| 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, the control system includes a marker on... |
10/06/1998 |
| 5797719 | Precision high pressure control assembly A precision high-pressure control assembly for supercritical fluids comprises a continuous flow system having a pressure control loop which includes a source of fluid communicating with a pump. A pressure sensor monitors the pressure of... |
08/25/1998 |
| 5785500 | Well pump having a plunger in contact with well and pump fluid A pump apparatus for use in a pump system of a well capable of exerting and releasing pressure on a pump fluid supplied to the pump apparatus. The pump apparatus includes a tubular body having a pump fluid space for communicating with the... |
07/28/1998 |
| 5782158 | Air operated hydraulic torque wrench pump A hydraulic pump assembly for powering a hydraulic torque wrench is air-powered and has hydro-pneumatic control circuitry which continues operation of an air motor which drives the hydraulic pump for a post-advance period after an advance... |
07/21/1998 |
| 5743716 | Reversible pump controller A reversible flow variable rate hydraulic swashplate pump furnishes hydraulic fluid to stroke a piston supporting a subsurface pump. The controller determines reversal of pump flow and timing and speed of upstroke and downstroke of the... |
04/28/1998 |
| 5639218 | High pressure water pump system having a reserve booster pump A superhigh pressure generator system is provided which comprises first, second and reserve boosters 1, 2, 3 which are respectively provided with a plunger chambers 4a, 4b, 4c within single rod-type oil hydraulic cylinders 7a, 7b, 7c on... |
06/17/1997 |
| 5634773 | Superhigh pressure control system First and second boosters 1, 2 which, through reciprocating motions of oil hydraulic cylinders 6a, 6b, pressurize water sucked into plunger chambers 3a, 3b to a superhigh pressure level are connected in parallel to a water discharge line... |
06/03/1997 |
| 5616005 | Fluid driven recipricating apparatus An apparatus comprising a pair of fluid driven pump assemblies in a back-to-back configuration to yield a bi-directional pump. Each of the pump assemblies includes a piston or diaphragm which divides a chamber therein to define a power... |
04/01/1997 |