Patents in subclass Pumps/By Liquid Pressure Sensor
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 07140051 | Dry suction fitting assembly A dry suction fitting assembly is provided for drawing water from a spa, whirlpool bathtub or other suitable water tub to a pump, featuring a suction body for arranging in relation to a wall of the spa, whirlpool bathtub or other suitable... |
11/28/2006 |
| 07001158 | Digital fluid pump Digital fluid pumps having first and second electromagnetic actuators formed in part by a piston to alternately drive the piston in opposite directions for pumping purposes. The piston motion is intentionally limited so that the... |
02/21/2006 |
| 06981838 | Method and apparatus for detecting the occurrence of surge in a centrifugal compressor A method and apparatus for detecting the occurrence of surge or incipient surge in a centrifugal compressor is supplied. The centrifugal compressor has an inlet passage, an inlet passage wall and an impeller. When flowing a fluid through... |
01/03/2006 |
| 06817198 | Method and apparatus for variable frequency controlled compressor and fan Compressor controls in a compressed gas system provide a variable frequency controlled refrigerant compressor in a dehydrator for compressed air or other gases. The system detects changes in a demand on the pneumatic air supply by... |
11/16/2004 |
| 06814187 | System for detecting liquid in an inground lift A system for detecting liquid in an inground lift has a tube with an open end disposed within the internal cavity defined by the containment housing of the inground lift. The tube is in fluid communication with a source of pressurized... |
11/09/2004 |
| 06808369 | System for regulating fluid pump pressures A method is provided for regulating fluid pump pressures by detecting an elevation differential between a fluid flow control device and the distal end of a fluid line in communication with the fluid flow control device. A fluid flow... |
10/26/2004 |
| 06766810 | Methods and apparatus to control pressure in a supercritical fluid reactor The present invention pertains to methods and apparatus for controlling the pressure in a supercritical processing system. Active methods for controlling the pressure include anticipating a pressure deviation due to a solute addition to a... |
07/27/2004 |
| 06729848 | Sensor mount for sump draining apparatus A sump draining apparatus having an pressure transducer engaged in a receptacle that is in turn engaged in an open-ended collar of a housing. The receptacle and thus the pressure transducer is slideable in the axial direction into and out... |
05/04/2004 |
| 06663586 | System for collection of blood without damage A system for the collection of physiological fluids includes a vacuum source (14) that is controlled to provide low vacuum as a function of whether fluids are entering the system. The suction wand and associated tubing are made of thin... |
12/16/2003 |
| 06644929 | Pressure regulating valve A pressure maintenance assembly for a domestic water well system. The assembly includes a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic communication with the outlet side, and a calibrated... |
11/11/2003 |
| 06632072 | Pneumatic pump control system and method of making the same including a pneumatic pressure accumulator tube A pneumatic pump control system for sequentially switching on and off an electrically operated pump disposed in a waste water liquid storage tank The pneumatic pump control system comprises a pneumatic pressure accumulator that is... |
10/14/2003 |
| 06592342 | Water supply system A water supply system has its housing and pressure tank sized so that the pressure tank fits within the housing, thus avoiding the need for another separate opening in the ground for the pressure tank. With this arrangement, there is less... |
07/15/2003 |
| 06557729 | Soap dispensing system with single soap pump and two unpressurized soap containers A soap dispensing system includes non-pressurized first and second soap containers connected to a soap manifold. The manifold has a first inlet connection to the first soap container and a second inlet connection to the second soap... |
05/06/2003 |
| 06487903 | Method and system for determining pump cavitation and estimating degradation in mechanical seals therefrom A method and system for determining pump cavitation is disclosed. In accordance with the principle of the invention, changes in dynamic fluid pressure within a pump are monitored and compared to a determined cavitation alarm pressure. The... |
12/03/2002 |
| 06484782 | Grout applicator system A grout slurry pumping system, and a grout slurry control box and associated tools are described. Methods of using the pumping system and control box are also described. The pumping system and control box may be used separately or... |
11/26/2002 |
| 06416291 | Fluid flow resistance monitoring system Flow parameters in a fluid delivery assembly are determined by monitoring pressure responses and processing those responses along with information regarding the fluid flow. In one aspect, a processor controls the pump to pump flow... |
07/09/2002 |
| 06398510 | Method and system for avoiding cavitation in a pump conveying saturated water A tank (1) having saturated water (2) is connected to a pump (5) via a suction line (4). The actual values of the pressure and/or temperature in the tank (1) are detected to a measuring arrangement (7) and supplied to a control apparatus... |
06/04/2002 |
| 06382922 | Grout pumps, control boxes and applicator tools, and methods for using the same A grout slurry pumping system, and a grout slurry control box and associated tools are described. Methods of using the pumping system and control box are also described. The pumping system and control box may be used separately or... |
05/07/2002 |
| 06305416 | Actuator valve for pressure switch for a fluidic system Hydraulic actuator. An actuator body includes an inlet, an outlet, a port communicating with a pre-charged diaphragm tank, and a port communicating with a pressure switch. The actuator body includes a movable member which, in a first... |
10/23/2001 |
| 06293097 | On-board reductant delivery system An on-board reductant delivery system for a motor vehicle includes a mixer/nozzle system for connection to an exhaust system of a motor vehicle. The on-board reductant delivery system also includes a fluid metering system connected to the... |
09/25/2001 |
| 06273684 | Centrifugal pump unit The centrifugal pump unit includes a flow switch arranged within the pump housing in the flow path of a delivery fluid, which essentially consists of an electromagnetic switch device and a two-armed, pivotably mounted lever whose one arm... |
08/14/2001 |
| 06264435 | Regulation of fluid conditioning stations They are characterized in that, when the pressure at the measurement point reaches or exceeds the start-up pressure value and/or when the flow provided by the pumping devices is lower than the consumption flow, the flow provided by the... |
07/24/2001 |
| 06227241 | Actuator valve for pressure switch for a fluidic system Hydraulic actuator. An actuator body includes an inlet, an outlet, a port communicating with a pre-charged diaphragm tank, and a port communicating with a pressure switch. The actuator body includes a movable member which, in a first... |
05/08/2001 |
| 6138750 | Water well stagnant bottom rehabilitation means and method An apparatus and method of rehabilitating the stagnant bottom of water wells using existing well equipment including a pump and a pressure tank, augmented by valves and a conduit that extends from the surface to near the bottom of the... |
10/31/2000 |
| 6109879 | Fluid pressure source apparatus A fluid pressure source apparatus includes a pump, an accumulator for receiving pressure from the pump, a pressure switch for detecting the pressure in the accumulator, an electric motor for driving the pump, and a motor control device... |
08/29/2000 |
| 6041856 | Real-time pump optimization system A system for optimizing progressive cavity pump operation during oil and gas recovery is provided. By strategically disposing a plurality of sensors along the production tubing and sucker rod strings, progressive cavity pump operation and... |
03/28/2000 |
| 5979478 | Apparatus and method for treating water in a water supply system Apparatus for delivering a water treatment chemical to a water intake in a water system is disclosed. The water system has a water inlet and a pump for withdrawing water from a natural body of water, such as an underground aquifer, a... |
11/09/1999 |
| 5980210 | Diaphragm-type pressurizing pump having a water stopper structure A diaphragm-type pressurizing pump having a water stopper structure, in which an upper lid of the pump having a pressurizing room being provided on top of the pressurizing pump, wherein the water stopper structure including mainly a valve... |
11/09/1999 |
| 5947690 | Actuator valve for pressure switch for a fluidic system Hydraulic actuator. An actuator body includes an inlet, an outlet, a port communicating with a pre-charged diaphragm tank, and a port communicating with a pressure switch. The actuator body includes a movable member which, in a first... |
09/07/1999 |
| 5941305 | Real-time pump optimization system A system for optimizing pump operation during oil and gas recovery is provided. By strategically disposing a plurality of sensors along the production tubing and sucker rod strings, pump operation and performance may be monitored... |
08/24/1999 |
| 5934880 | Fluid pressure source apparatus for providing adequate accumulator pressure during pressure failure A fluid pressure source apparatus has a pump, an accumulator, a pressure switch, and a control device for turning on and off the pump in accordance with the signal from the pressure switch. The control device has a pressure increase... |
08/10/1999 |
| 5927950 | Device for controlling the supply of water (or other liquid) by a pump and for protecting the same in the event of dry running The device comprises: a flowstat 16 with a slider 16B with a built-in magnet 22 designed to interfere with a proximity-operated electric switch 20A; a variable-volume chamber 1 with a flexible wall 9 and spring means 28 that tend to... |
07/27/1999 |
| 5765995 | Automated engine-powered pump control system An automated control system for an engine-powered pump system. The pump system includes an engine with a battery and a pump. A control unit includes: a display, engine sensors, pump sensors, fluid level sensors, engine controllers, pump... |
06/16/1998 |
| 5725359 | Pool pump controller A pool pump controller includes a pneumatic pressure sensor having at least one port disposed to react to negative pressure within a pool's pump intake chamber. The sensor input port, which includes a check valve, is connected to a pump... |
03/10/1998 |
| 5707211 | Variable speed pump system with a hydropneumatic buffer/pressure tank A fluid pressure control system which is usable to control pressure in a fluid distribution system includes a variable speed drive coupled to a pump. A hydropneumatic tank is coupled to the distribution system. In normal operation, the... |
01/13/1998 |
| 5672050 | Apparatus and method for monitoring a sump pump An apparatus and method for monitoring and controlling a motor driven sump pump. The apparatus and method includes a power supply which powers the apparatus, a sensing portion which detects the level of the liquid within the sump, a... |
09/30/1997 |
| 5636971 | Regulation of fluid conditioning stations An arrangement for regulating fluid conditioning stations including a plurality of pumping devices, at least one fluid storage reservoir, at least one pressure transducer and regulating mechanism, the conditioning station providing a... |
06/10/1997 |