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7607895 |
Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing machines
A fluid circulation pump ( 10 ) with synchronous motor ( 14 ), equipped with fluid heating device ( 40 ), particularly for washing machines or the like, of the type comprising a rotor ( 18 ),...
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7600982 |
Compact helical compressor for mobile use in a vehicle
A compact helical compressor system for mobile use in vehicles is described. The system includes a helical compressor unit, a motor unit dedicated to the helical compressor unit for driving the...
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7437880 |
Pump bypass control apparatus and apparatus and method for maintaining a predetermined flow-through rate of a fluid through a pump
A bypass control apparatus is used with a pump pumping a fluid therethrough. A bypass flow line circulates fluid about the pump. A bypass valve is interposed in the bypass flow line and moves...
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7338260 |
System and method for controlling current provided to a stepping motor
A system and method is disclosed for controlling the input electrical current to an infusion pump stepper motor based on predetermined torque requirements. The system can include a motor controller...
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7188639 |
Storage tank for easily polymerizable compound and method of storage
A storage tank for an easily polymerizable compound has acceptance piping and delivery piping with a circulation line directly connecting the acceptance piping to the delivery piping or with...
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7156873 |
Methods for detecting an abnormal condition of a blood pump system
The present invention provides methods for detecting an abnormal condition of a blood pump system based on the power consumption of the pump actuator. By plotting differentiated power consumption...
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7150711 |
Method for controlling an assist pump for fluid delivery systems with pulsatile pressure
Method for controlling an assist pump for fluid delivery systems with pulsatile pressure. If for example a heart assist pump is driven with a constant number of revolutions, it is achieved, that...
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7128539 |
Method for improved cleaning of a pumping system
Improved method for cleaning a pump, fluid hose, and spray gun is provided by, for example, repeatedly changing the flow rate of the cleaning fluid pumped through the system to generate turbulence...
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7118347 |
Method for activating an electric motor and a metering pump by supplying predetermined pulse intervals to supply predetermined fluid quantities
The methods serves for activating an electric motor of a metering pump with which the fluid quantity (V nom ) to be delivered is set by an external impulse trigger, wherein a predetermined delivery...
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7083392 |
Pump and pump control circuit apparatus and method
A method and apparatus for a pump and a pump control system. The apparatus includes pistons integrally formed in a diaphragm and coupled to the diaphragm by convolutes. The convolutes have a bottom...
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7070393 |
Method for regulating a compressor installation with a dryer and compressor installation used therewith
The invention relates to a method for regulating a compressor installation with at least one compressor element ( 6 ) driven by a motor and, in the pressure conduit ( 11 ) thereof, a dryer ( 2 ) of...
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7040868 |
Pumping system for controlling pumping speed during discharge pressure fluctuations
The pressure downstream of a pump is measured and the speeds of the engine and pump are controlled in response to pressure changes downstream of the pump by a controlling element overriding a...
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6939109 |
Pump control system
The present invention provides a system which comprises primary supply pumps and secondary supply pumps and controls pressurized water supply systems, air-conditioning systems, or the like that...
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6935356 |
Underground storage tank metering system in a service station environment
A meter coupled in close proximity to an underground storage tank fuel pipe that delivers fuel from the underground storage tank to fuel dispensers in a service station environment. The meter...
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6866483 |
High-pressure cleaning device
High-pressure cleaning device with an electric motor and a pump for conveying a cleaning fluid, with a plunger, which is displaceable by the cleaning fluid in dependence on its pressure or its flow...
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6860723 |
Slurry flow control and monitor system for chemical mechanical polisher
A system for controlling and monitoring a rate of flow of a fluid, such as a CMP slurry, comprising a pump for pumping the slurry; a flow meter for monitoring the rate of flow of the slurry; and a...
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6844094 |
Gas-supplying apparatus for fuel cell
A gas-supplying apparatus for a fuel cell, which generates electric power due to an electrochemical reaction between oxygen and hydrogen, during which water is produced, and which has respective...
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6840744 |
Continuous liquid flow system
A system for continuous delivery of a measured flow of liquid to a processing apparatus includes a reservoir for holding a bulk supply of the liquid and an intermediate vessel. A first pump...
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6829893 |
Compressor arrangement, particularly for commercial vehicles, having an auxiliary compressor unit
An internal-combustion engine for generating a rotational movement is provided to drive a compressor unit which is connected on the output side, for generating compressed air from ambient air. A...
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6824362 |
Fan control system
A fan control system uses a closed loop system to adjust the actual operating speed of a fan or fans to a desired operating speed. The desired speed and actual speed are compared in a high gain...
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6783328 |
Method and apparatus for controlling fluid pumps
Fluid pump control modes in a medical perfusion system include a Back Off Response Mode, a Flow Servo Mode, a Pressure Servo Mode, and a Master-Slave Servo Mode. In the Back Off Response Mode,...
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6773235 |
Rotodynamic multi-phase flow booster pump
A method and system for optimizing the performance of a rotodynamic multi-phase flow booster, such as a wet gas compressor, utilizes a meter which measures the fluid density ρ upstream of the...
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6746606 |
Method and system for matching flow rate
A flow rate of unconnected first and second fluid flows is matched, such as, but not limited to, matching the flow rate of the replacement water stream with the waste water stream in kidney...
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6733252 |
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...
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6715996 |
Method for the operation of a centrifugal pump
A method for the operation of a centrifugal pump ( 2 ) driven by an electric motor ( 5 ) with variable frequency, wherein too small a flow through the pump ( 2 ) is ascertained by monitoring...
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6709241 |
Apparatus and method for controlling a pump system
A controller for controlling operating parameters associated with fluid flow, speed or pressure for a centrifugal pump for pumping fluid, wherein at least one sensor is coupled to the pump for...
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6655922 |
System and method for detecting and diagnosing pump cavitation
The present invention provides cavitation detection systems and methods employing a classifier for detecting, diagnosing and/or classifying cavitation in a pumping system. The classifier can be...
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6648603 |
Pressure washer engine idle controller
An engine idle controller for an engine driven pressure washer. The pressure washer delivers high pressure water from a pump through the idle controller to a conventional wand which includes a...
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6481973 |
Method of operating variable-speed submersible pump unit
A variable-speed submersible pump has a centrifugal pump, with a grinder for entrained solids at the intake, driven by a variable-speed 3-phase AC motor. A microcontroller controls the pump output...
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6474949 |
Evacuating unit with reduced diameter exhaust duct
An apparatus for and a method of evacuating a vacuum chamber (process chamber) or the like of a semiconductor fabrication facility, for example. The evacuating apparatus has a vacuum chamber to be...
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6461323 |
Surgical system pump with flow sensor and method therefor
The automatically controlled pump supplies pressurized irrigation fluid to a surgical site. The pump system includes a motor in a housing and a pump in a housing defining input and output ports....
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6457319 |
Air conditioner and control valve in variable displacement compressor
A control valve controls the pressure in a crank chamber of a compressor to change the displacement of the compressor. The compressor includes a discharge chamber, a suction chamber and a supply...
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6431838 |
Drive unit for driving fuel pump for small sized vehicle
A drive unit for driving a fuel pump for a small-sized vehicle, which is capable of reducing the current consumption of the fuel pump. A drive unit includes an ECU for controlling the fuel...
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6394771 |
System and method for increased flow uniformity
A system for increasing the volumetric flow uniformity of fluid pumped through a conduit by an infusion pump. A pumping mechanism operates in identifiable step movements that are broken down into...
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6374610 |
Secondary air fan for an internal combustion engine
A secondary air fan for an internal combustion engine includes a housing in which a motor unit drives a pump unit, the housing having an air inlet channel and an air outlet channel, an air mass...
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6352176 |
Fuel dispensing system with discharge rate control
A fuel dispensing system compensates for varying fuel source flow rate requirements based on fuel dispenser feedback signals. A pumping system pumps fuel from one or more fuel sources to one or...
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6347516 |
Electrohydraulic pressure supply unit with variable-displacement pump and controllable electric device
An electrohydraulic pressure supply unit involving the joint operation of two energy converters, which can be adjusted independent of each other, including an electric motor with speed control that...
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6273684 |
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...
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6269872 |
System and method for regulating coolant flow rate to a heat exchanger
A method for regulating coolant flow rate to a heat exchanger in an automotive vehicle is described. The method includes the steps of providing a main fluid pump for providing a source of fluid...
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6213724 |
Method for detecting the occurrence of surge in a centrifugal compressor by detecting the change in the mass flow rate
A method for controlling working fluid surge in a centrifugal compressor. According to the method, surge detection is accomplished by calculating the change in the compressible fluid mass flow rate...
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6155347 |
Method and apparatus for controlling the liquid level in a well
The present invention provides a method and apparatus for controlling the production rate of a rotary downhole pump to prevent well pump-off. The method includes the steps of operating the pump at...
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6135719 |
Method and apparatus for metering injection pump flow
A system for metering a fluid, such as a catalyst in an industrial chemical process plant, includes a controller, a drive pump assembly and an injection pump assembly. The drive pump assembly...
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6099264 |
Pump controller
In accordance with the present invention, there is provided an in-line fluid pump controller for activating and de-activating a fluid pump which is configured to pump fluid through a fluid line....
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6062822 |
High-pressure cleaning apparatus
In a high-pressure cleaning apparatus comprising an electric motor, a high-pressure pump driven by the electric motor, and an automatic switching-off means for the electric motor including a switch...
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6053702 |
Portable water pump having a pressure control circuit with a bypass conduit
A booster water pump for increasing source water pressure to a high water pressure for industrial use, has an elongated tubular hollow cylinder having both ends closed with a cylinder inlet port in...
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6045333 |
Method and apparatus for controlling a submergible pumping system
A submergible pumping unit for raising viscous fluids from a well is driven by an electronic drive and control system, a first portion of which is located above the well, and a second portion of...
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6039543 |
Pump shut off system
A new pump shut off system for shutting off a pump when there is insufficient fluid to pump through the pump. The inventive device includes a pump with a primary switch for selectively activating...
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5993163 |
Demand system for pneumatic source with controller responsive to bypass air flow rate
A demand system is disclosed for controlling the output airflow from a pneumatic source in response to changes in airflow demand. The source includes a pressure sensitive bypass mechanism in fluid...
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5988983 |
Infusion method and infusion pump
According to an infusion method and pump, in order to perform infusion at a flow rate with high accuracy by allowing finger members to appropriately press a predetermined portion of an outer...
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5971712 |
Method for detecting the occurrence of surge in a centrifugal compressor
A method for detecting the occurrence of surge in a centrifugal compressor includes the step of calculating a time rate of change of a discharge pressure of the fluid discharged from the...
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