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8042612 |
Method and device for maintaining sub-cooled fluid to ESP system
A method of operating an electrical submersible pumping system that includes realtime monitoring of the wellbore fluid and adjusting pump speed so the fluid entering the pump remains subcooled. The...
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8021122 |
Inflation control apparatus for an inflatable object with two chambers
Apparatus for maintaining differential internal fluid pressure in a dual fluid chamber object where it is desired for one chamber to have greater internal pressure than the other includes a sensor...
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7967572 |
Hydrogen operated power system
One form of a hydrogen operated power system according to this invention is a fuel cell system (20) provided with a supply system which supplies a gaseous fuel from a fuel supply tank (24) to a...
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7963748 |
Centrifugal air compressor
If the ambient temperature of a pressure volute measured by a temperature sensor exceeds 0° C., a compressor is instantly started at normal operation. If the temperature of the pressure volute ...
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7925028 |
Electronic device having a blower with noise control
An electronic device having a first motor which rotates a rotating body (for example, blades) about a rotation axis and a second motor which vibrates a vibrator including the rotating body in the...
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7905710 |
System and method for improved low flow medical pump delivery
A medical pump with an improved continuity low flow delivery system and method for use with a pumping chamber, for example in a cassette, is disclosed. The pump includes a pump drive for exerting a...
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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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7871394 |
System and method for optimizing control of PCA and PCEA system
In a patient controlled analgesia (PCA) system, physiological data is processed and alarms are provided by the controller of the physiological module sensing the data according to a first rule. The...
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7861582 |
Flow rate estimation method of blood pump
In a flow rate estimation method of a blood pump, a general flow rate estimation formula which includes a correction term is formed based on a plurality of blood pumps. Measured data obtained from...
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7762786 |
Integrated fire pump controller and automatic transfer switch
A unitary fire pump controller and transfer switch assembly is housed in a single cabinet having a fire resistant barrier dividing the cabinet into at least two separate compartments. A fire pump...
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7762339 |
Apparatus and method for controlling the speed of a pump in a well
A controller for controlling the pump unit of an oil well includes a sensor having a first and second probe for placement in the flow of oil from the well bore. Each of the probes contains a...
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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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7758547 |
Process for controlling an infusion device
A process comprises the phases of: activating a pusher, which exerts a push force on a plunger of a syringe containing the infusion liquid; measuring the push force by means of a load cell;...
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7755318 |
Soft-start/stop sump pump controller
A sump pump control includes a microprocessor that sends a trigger pulse to an alternistor to turn the alternistor on and connect the sump pump to an NC power source. The microprocessor also...
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7751159 |
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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7704227 |
Methods and apparatuses for detecting medical device acceleration, temperature, and humidity conditions
An ambulatory medical device for detecting acceleration, temperature, and/or humidity conditions in or around the medical device is provided. The medical device includes one or more acceleration,...
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7641449 |
Air compressor having a controller for a variable speed motor and a compressed air tank
For a motor that drives a compressed air generator, three operating modes which includes a powerful mode for rotating a motor in a high speed range, a silent mode for rotating the motor in a low...
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7497116 |
Flow rate estimation method of blood pump
In a flow rate estimation method of a blood pump, a general flow rate estimation formula which includes a correction term is formed based on a plurality of blood pumps. Measured data obtained from...
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7472541 |
Compressor control unit and gas turbine power plant including this unit
Provided is a compressor control unit with a high response ability to changes of gas condition of a compressor (compressor suction temperature, pressure, gas specific gravity, pressure ratio of...
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7458781 |
Radiation fan driving apparatus
A radiation fan driving apparatus aims to allow a non-stop power supply system to output electric power to drive a radiation fan to continuously rotate at a lower speed to perform heat dissipation...
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7442014 |
Fluid transfer system and method for transferring fluid
A fluid transfer systems described herein. The fluid transfer system generally includes a centrifugal multistage pump, a holding tank for holding the fluid operably connected to the pump body via a...
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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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7429842 |
Control and alarm system for sump pump
A control system for a sump pump driven by an AC motor includes an AC power line having an input adapted for connection to an AC power source and an output adapted for connection to the AC drive...
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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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7296978 |
Compressed air system utilizing a motor slip parameter
A compressed air system and method of operating the system wherein the slip between the compressor motor and its powering alternator is used as an indication of whether the compressor is running in...
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7071429 |
Linear adjustment operator for pressure control of paint pumps
A linear adjustment operator for pressure control of paint pumps including a base, an electrical switch, a linear actuator, a spring biasing the switch towards the actuator and a lever acting on...
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7055338 |
Refrigerator
A refrigerator having a compressor and a control unit for selectively activating and deactivating the compressor in response to the temperature inside the refrigerator. The selective activation and...
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7037081 |
High pressure reciprocating pump and control of the same
Pumping requirements for chromatograph applications are for constant flow at high and variable pressures and for accurate programmable control of liquid composition. A two-cylinder pump, pumping...
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7032659 |
Integrated control system for beam pump systems
The present invention generally provides apparatus and methods of operating a pumping system. The pump control apparatus includes a first sensor for measuring strain on a structure of the well...
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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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6939110 |
Control system for I.C. engine driven blower
A system for maintaining constant pressure, such as at a mosquito fogging nozzle, by electronically controlling the speed of an engine that is coupled to a blower. A pressure sensor measures the...
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6912862 |
Cryopump piston position tracking
An improved cryogenic compressor with piston position sensing is disclosed. Precision optical encoders using incremental or absolute encoding are incorporated into a compressor to allow for...
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6894448 |
Direct current motor condition monitoring and exercising system
Hydraulically actuated aerial lift trucks typically have a primary hydraulic pump system driven by the vehicle's engine and a backup pump system driven by a direct current motor. Due to infrequent...
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6826490 |
Transducer calibration system: apparatus and method
A transducer calibration apparatus and method for transforming both previously established transducer parameters for a transducer calibrated to a first target object material and measured...
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6814546 |
Multifan-equipped apparatus for cooling objects mounted at local interior regions and provided with fan-unit assembly and operation monitoring means having an error detector
A multifan-equipped apparatus in which a plurality of objects mounted are controllably cooled by blowing air using a fan-unit assembly composed of a plurality of fan units. The plural fan units are...
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6742994 |
Reciprocating pump with malfunction detecting apparatus
A reciprocating pump which is capable of detecting abnormalities in the sucking and discharging of fluid, such as the exhaustion of oil or the clogging of oil on the discharge side, by making use...
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6741056 |
Air sampler with compensating pump motor speed
A constant flow of air through a personal air sampler is provided regardless of changes in the air flow path, by altering the pump speed as a function of the power taken by the pump. The...
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6676382 |
Sump pump monitoring and control system
Motor speed, motor amps, float position and elapsed run time are monitored to determine whether a sump pump is in a normal condition, a jammed condition, an inadequate pumping rate condition, a dry...
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6659980 |
Methods, apparatuses, and uses for infusion pump fluid pressure and force detection
An occlusion detection system detects an occlusion in a fluid path of an infusion pump. The infusion pump is for delivering fluid to a user. The infusion pump includes a housing, a motor, a...
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6651900 |
Control apparatus for a fire pump, operation display apparatus for a fire pump and operation mode control apparatus for a fire pump
In a fire pump adapted to force out the water, which is pumped from a water source, from a nozzle provided at a front end portion of a delivery hose, a nozzle control unit 8 adapted to control the...
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6623246 |
Apparatus and method for controlling operation of linear motor compressor
An apparatus and a method for controlling operation of a linear motor compressor, by which a linear motor compressor can operate always in an optimum condition by coping with the load variation due...
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6555986 |
Method and apparatus for detection of occlusions
A method and apparatus for automatically detecting an occlusion or drive system failure in a medication infusion system is provided. The electrical current to an infusion pump is measured and...
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6554577 |
Apparatus and method for controlling operation of linear compressor using pattern recognition
An apparatus and a method for controlling operation of a linear compressor uses a pattern recognition for operating a compressor at an optimum efficiency by recognizing a trace in a graph about...
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6547528 |
Control system for fire pump
A system for remote-controlling a fire pump with a simple wiring construction is provided, being capable of conducting various kinds of control and display. The fire pump control system has an...
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6540484 |
Scroll compressor with thermostat mounted in non-orbiting scroll
A thermostat is positioned within a scroll compressor such that a thermostat switch is positioned in the non-orbiting scroll, and a body of the thermostat extends through the crankcase. The...
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6537032 |
Load dependent variable speed hydraulic unit
There is provided an autonomous inverter-driven hydraulic unit in which a command pressure and command flow rate do not need to be inputted from outside and a pressure and flow rate can be...
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6524075 |
Apparatus and method for controlling operation of compressor
In an apparatus and a method for controlling operation of a linear compressor, operation of a linear compressor is controlled by finding each inflection point as a TDC (top dead center) is 0 by...
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6504338 |
Constant CFM control algorithm for an air moving system utilizing a centrifugal blower driven by an induction motor
A method and apparatus for achieving constant air flow rate economically utilizes an induction blower motor with control settings determining the motor excitation voltage. A memory stores, for a...
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6491500 |
Scroll compressor with motor protector in non-orbiting scroll and flow enhancement
A scroll compressor is provided with a motor protector mounted at a location remote from the motor. The motor protector is of the sort which operates to stop operation of the motor both when the...
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6471486 |
Compressor system and method and control for same
An electronic control system is disclosed to control and to prevent damage to a standalone or a network of oil free, two stage compressor packages. The electronic control system uses pressure and...
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