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7611332 |
Device and method for controlling a thick matter pump
A device and a method for controlling a two-cylinder thick matter pump to achieve a reliable operation even of single-circuit two-cylinder thick matter pumps. To this end, the pipe switch includes...
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7611331 |
Device and method for controlling a two cylinder thick matter pump
A device and a method for controlling a two-cylinder thick matter pump comprising pistons that are actuated in a push-pull manner by means of a hydraulic reversible pump ( 6 ) and hydraulic drive...
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7604462 |
High pressure pump having plunger
A high pressure pump draws fluid from a fluid inlet into a compression chamber through an inlet chamber. The high pressure pump has a fluid chamber that communicates with the fluid inlet via the...
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7600981 |
Method for optimizing the operation of a plurality of compressor assemblies of a natural-gas compression station
A method for optimizing the operation of several compressor units in a natural gas compression station. After a second or further compressor unit is started, the speeds of the running compressor...
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7594801 |
Chemical liquid apparatus and deaerating method
The amount of chemical liquids dispensed by a chemical liquid supply apparatus is stabilized and dispensing accuracy is remarkably improved. A pump discharges a liquid accommodated in a liquid...
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7581935 |
Device and method for controlling a thick matter pump
The invention relates to a device and a method for controlling a two-cylinder thick matter pump comprising delivery pistons that are actuated in a push-pull manner by means of a hydraulic...
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7572109 |
Thermopneumatic capillary micropump and manufacturing method thereof
According to various aspects, exemplary embodiments are provided of thermopneumatic capillary micropumps and manufacturing methods thereof. In one exemplary embodiment, a thermopneumatic capillary...
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7572108 |
Pump controller system and method
A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed...
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7572107 |
Ultra low volume chemical delivery system and method
A mobile, real-time system for delivering an aerosol spray to a treatment area while maintaining the fluid within a closed environment for providing maximum personal protection to the operators...
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7572106 |
Ink pumping apparatus for printing press and ink leak preventing method
It is intended to prevent ink from leaking through the ink outlet of the ink rail while the printing press is at halt. To achieve this object, a motor control section 40 shown in FIG. 4 ...
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7566206 |
Linear compressor for multi-stage compression
A linear compressor for multi-compression includes a stationary cylinder, a moving piston, and a stationary piston. The stationary cylinder has a first compression chamber formed therein. The...
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7556362 |
Pressure control valve unit and liquid ejecting apparatus
This invention is a pressure control valve unit including: a unit substrate; a first valve chamber provided at one side of the unit substrate, forming a part of a first liquid flow-path; a second...
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7547196 |
Method for mitigating rod float in rod pumped wells
Rod Float Mitigation (RFM) methods for rod-pumped oil wells having a variable frequency drive which controls the speed of the motor for the pump. Each method monitors rod loads or a similar...
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7540717 |
Membrane nanopumps based on porous alumina thin films, membranes therefor and a method of fabricating such membranes
A technique has been developed to fabricate micro- or nanopumps based on porous alumina thin films. The main body of the nanopump consists of a porous alumina thin film (containing nano-sized...
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7520730 |
Apparatus and method for controlling operation of compressor
An apparatus for controlling an operation of a compressor includes: a back electromotive force calculator for calculating a back electromotive force of a compressor based on a value of a current...
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7517200 |
Variable discharge fuel pump
A pump has a housing defining at least one pumping chamber, and a plunger slidably disposed within the at least one pumping chamber. The plunger is movable between a first and second spaced apart...
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7513752 |
Beam pump dynamic load monitoring and methods
A pump monitoring system includes a monitoring device configured for attachment to a cable harness of a pump, a strain gauge configured to measure dynamic loading of at least one cable of the cable...
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7511115 |
Method of preparing biodegradable polyester polymer material in the form of filament and sheet using compressed gas
Embodiments of the present invention may provide a method of preparing biodegradable polyester polymer materials both in a filament type and a sheet type using a compressed gas. The method of the...
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7503753 |
Variable capacity fluid pump for an engine
A variable capacity fluid pump that can be controlled independently of the rotation of the engine is provided. The fluid pump comprises a planetary gear mechanism having a first gear, second gears...
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7484938 |
Electronic control for pool pump
An electronic pool pump timer that controls the run time or the pump for a period of time each day depending on the date. In the preferred embodiment, the user enters the historical daily maximum...
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7467928 |
Microfluidic device utilizing magnetohydrodynamics and method for fabrication thereof
Microfluidic channels utilizing magnetohydrodynamics are used to pump very small volumes of solution. The channels have electrodes along the walls and a current carrying species within a solution...
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7442012 |
Speed control for compressors
Improvements to a compressor which consists in that, as soon as the measured outlet temperature (TO) reaches a certain hysteresis upper temperature limit (HMAX), the actual rotational speed of the...
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7431569 |
Pump health monitoring
A method of monitoring the health of a positive displacement hydraulic pump comprising the steps of:
establishing a flow path having a known flow number between a high pressure outlet line...
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7421316 |
Method and device 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...
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7415829 |
Piston compressor
A piston compressor comprises a piston ( 12 ) which oscillates in a cylinder ( 14 ). A compressed-gas supply arrangement is provided which comprises a compressed-gas accumulator ( 34 ), a...
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7413615 |
Method of transferring polymerizable liquid and apparatus for transfer
A subject for the invention is to provide a method of transferring a polymerizable liquid by which the polymerizable liquid can be stably transferred without arousing any mechanical-seal trouble...
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7413413 |
System and method to reduce acoustic noise in screw compressors
A system is provided for attenuating tonal acoustic noise associated with a single positive displacement compressor, or multiple positive displacement compressors proximately located from each...
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7413411 |
Electronically controlled vacuum pump
A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular...
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7409997 |
Electric submersible pump with specialized geometry for pumping viscous crude oil
A centrifugal pump has impellers for pumping low flow, high viscous materials. The impellers have high exit angles greater than 30 degrees and preferably greater than 50 degrees. The impellers and...
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7404702 |
Debris evacuation apparatus and method for an oil pump
A debris evacuation apparatus and method evacuates debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus has at least one seal and one groove located...
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7396216 |
Submersible pump assembly for removing a production inhibiting fluid from a well and method for use of same
A submersible pump assembly ( 100 ) for removing a production inhibiting fluid ( 102 ) from a well ( 110 ) and method for use of the same is disclosed. The submersible pump assembly ( 100 )...
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7387499 |
System and method for testing the operation of a cooling fan
The present invention is directed to a method for testing the operation of a cooling apparatus of an information handling system. The method may include determining a first rotational speed for...
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7387498 |
System and method for noise attenuation of screw compressors
A system is provided for attenuating noise in at least two positive displacement compressors proximately located from each other for use with at least one heating or cooling system. A lead...
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7384249 |
Fluid metering system
A fluid metering system includes a housing having a piston chamber with first and second spaced ends, at least one housing inlet passage, and at least one housing outlet passage. The housing inlet...
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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...
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7374406 |
System and method for reducing noise in multi-capacity compressors
A method and system is provided for reducing chatter in multi-capacity compressors having disengageable eccentric structures. The multi-capacity fluid compressor includes a compression chamber...
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7371052 |
Embedded fluid mixing device using a homopolar motor
A fluid displacement device ( 100 ) having a homopolar motor ( 110 ). The homopolar motor includes a rotatable disk ( 115 ) with at least one fluid displacement structure ( 120 ) disposed thereon....
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7367787 |
Pumping unit for a liquid medium
A pumping unit is provided with a pump that is partially disposed in a stator of an electric motor. The rotor is at an opposite end from the pump and is connected to the pump shaft to drive it for...
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7360998 |
Method of cleaning out blockages which prevent operation of a reciprocating downhole tubing pump
A method of cleaning out blockages which prevent operation of a reciprocating downhole tubing pump. A first step involves mechanically displacing and disabling, without removing, a ball from a ball...
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7331767 |
Method of stepless capacity control of a reciprocating piston compressor and piston compressor with such control
For stepless capacity control of a reciprocating piston compressor, an unloader ( 2 ) arranged on a suction valve ( 1 ) keeps open said suction valve ( 1 ) over a thereby controllable portion of...
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7316542 |
Fluid level control system
A control system governs fluid level in a well system including a pump positioned downhole for pumping fluid upward through a tubular, a rod positioned within the tubular for driving the pump, a...
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7314349 |
Fluid level control system for progressive cavity pump
A control system controls a progressive cavity pump driven by a rod. The rod is powered by a prime mover, such as a variable speed drive. A proximity sensor outputs signals responsive to rotational...
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7309216 |
Pump control and management system
A pump control and management system for monitoring and controlling sump pumps as well as providing supplemental controls and alarms. The pump control and management system includes a sump pump, a...
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7300258 |
Electromagnetic pump
An electromagnetic pump has a supply section and a magnetic force pumping section wherein flow of a electrically conductive material through the supply section is opposite to the flow of the...
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7300257 |
Prevention of unpowered reverse rotation in compressors
The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor....
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7290990 |
Short reverse rotation of compressor at startup
In a method of operating a scroll or screw compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type that does not compress liquid when...
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7287966 |
Fuel injector driver circuit with energy storage apparatus
A reciprocating pump includes a drive section and a pump section. The drive section has a reciprocating coil assembly to which alternating polarity control signals are applied by a reciprocating...
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7284963 |
Zero maintenance pump
A zero maintenance pump includes a motor having a motor housing and a motor drive shaft rotatably mounted in the motor housing. A shaft extension is coupled to the motor drive shaft distal from the...
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7284962 |
Micropump
This invention provides a fluid pump using perforate elements and closure elements which are alternately displace and relates particularly but not exclusively to miniature fluid pumps and pumps...
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7284961 |
Pumping system, replacement kit including piston and/or cylinder, and method for pumping system maintenance
A pumping system including a pump is disclosed. The pump includes a replacement piston and a replacement cylinder associated with the replacement piston. The replacement piston has a cross...
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