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8038414 |
Rinsing device and method for the operation thereof
A rinsing device, in particular for endoscopy, comprising an electrically driven pump, in particular a peristaltic roller pump, as well as a method of operating such a device. A control device is...
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8021133 |
Feed pump
A feed pump with a variable-speed drive for adjustably metering a feed quantity, which is designed as a single-stage centrifugal pump with a radial wheel arranged to rotate, without a sealing gap,...
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8019479 |
Control algorithm of variable speed pumping system
A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive...
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8006766 |
Method and apparatus for controlling the speed of a pump in a well
A method and apparatus for controlling a speed of a pump operating in a well. A first step involves monitoring a production flow rate of fluids produced from the well. A second step involves...
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7926740 |
Pressure washer system and operating method
A pressure washer is provided. The pressure washer can include a frame and a power source coupled to the frame. The power source can include an output shaft. The pressure washer can include a...
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7925385 |
Method for optimizing valve position and pump speed in a PID control valve system without the use of external signals
The present invention provides an algorithm that utilizes flow reference data which can be mathematically determined as a function of various pump and motor parameters such as speed, torque or...
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7901190 |
Pump control system
A pumping system in which a pump (5) is controlled by a programmed controller (22) in response to input signals from an inlet pressure transducer (3) and an outlet pressure transducer (15) and in...
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7893178 |
Process for storing a monomer phase which is liquid under the conditions of storage
A process for storing a monomer phase which is liquid under the conditions of storage and comprises methacrylic monomers to an extent of ≧95% by weight and has been obtained by condensation out o...
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7874808 |
Variable speed pumping system and method
A variable speed pumping system and an associated method for moving water of an aquatic application. The variable speed pumping system includes a water pump for moving water in connection with...
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7874809 |
Water-lifting pump apparatus and method for controlling operation thereof
A water-lifting pump apparatus which is free of a discharge valve and a check valve, is low in cost, and is capable of reducing vibration and noise due to a waterfall after the end of water pumping...
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7870900 |
System and method for controlling a progressing cavity well pump
A system and method for controlling the speed of a progressing cavity liquid well pump to increase liquid production from a well while avoiding operation of the well in a pumped-off state. A...
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7857976 |
Hemofiltration system and method based on monitored patient parameters, supervisory control of hemofiltration, and adaptive control of pumps for hemofiltration
A multipurpose hemofiltration system and method are disclosed for the removal of fluid and/or soluble waste from the blood of a patient. The system continuously monitors the flow rates of drained...
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7845913 |
Flow control
A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor,...
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7828528 |
Occlusion sensing system for infusion pumps
Some embodiments of an infusion pump system may include an occlusion sensor system that communicates with control circuitry to detect the presence of an occlusion. In some embodiments, the...
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7810309 |
Fuel system utilizing dual mixing pump
The present invention provides a fuel system for an engine including a water supply source for providing water and a fuel supply source for providing fuel. A centrifugal pump is fluidly connected...
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7798781 |
Metering pump with self-calibration and health prediction
A metering pump incorporates a method of relating inner loop current to a pump output pressure. Pump/motor speed, which correlates to current, is measured and controlled by a system controller....
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7758315 |
Pump controller for controlling pumps connected in tandem
A system for automatically controlling a pumping unit used in fire suppression comprises a pumping unit, a water flow sensor and a pump controller. The pumping unit has a pump with a suction inlet...
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7669651 |
Apparatus and method for maximizing production of petroleum wells
The level of petroleum accumulating from a production zone as it is pumped from a lower elevation in a wellbore is remotely monitored by using the energy of a sucker rod driven pump. One or more...
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7658081 |
Structure for sensing refrigerant flow rate in a compressor
The compressor has a differential pressure type flow rate detector that obtains the pressure in an upstream passage and the pressure in a downstream passage to detect a refrigerant flow rate within...
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7628590 |
Method and apparatus for reducing free flow risk
A technique for reducing the risk of free flow through a pump is disclosed. The technique includes sensing a pressure difference between the pump inlet and outlet. The pressure difference is...
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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), equipped with...
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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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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 (Vnom) 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 the...
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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 electrical...
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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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