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8182680 |
Primary piston correction during transfer
A method for controlling operation of a pump unit, where the pump unit includes a primary piston pump having a primary piston and a secondary piston pump having a secondary piston. The primary...
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8180496 |
System and method of constant pressure, variable speed pump control with local equalization for dissimilar pumps
A pump control system includes a plurality of different variable speed pumps. Each of the pumps can be operated at a different speed to equalize pump loads. A system wide proportional integral...
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8172551 |
Variable actuation pressure system for independent pressure control
A pump arrangement and method of regulating pressure of a pump arrangement are provided. The pump arrangement includes an actuation pump, a pressure regulating valve, and a control valve. The...
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8170762 |
Method and apparatus to control operation of a hydraulic pump for an electro-mechanical transmission
A method for controlling a hydraulic flow within a powertrain comprising an electromechanical transmission mechanically-operatively coupled to an engine adapted to selectively transmit power to an...
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8157534 |
Control device for a power unit
The present invention refers to a control equipment for a pressure set, said pressure set being made up of a main pump and at least one auxiliary pump, characterized in that it comprises a housing...
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8136508 |
Selective displacement control of multi-plunger fuel pump
A pump for a combustion engine is disclosed. The pump may have at least one pumping member movable through a plurality of displacement strokes during a single engine cycle. The pump may also have a...
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8128377 |
Split-pressure dual pump hydraulic fluid supply system for a multi-speed transmission and method
A split-pressure, dual-pump system for supplying hydraulic fluid to a multi-speed transmission is provided. The system includes a low-pressure work circuit operatively connected to a fixed...
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8083493 |
Transport device for sterile media
For water-jet surgery pump devices are known by means of which a sterile fluid is transported through a reservoir to the surgical instrument by means of piston pumps or similar volumetrically...
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8081456 |
Information processing apparatus and method for controlling information processing apparatus
An information processing apparatus sets a driving keeping voltage for keeping driving of a fan to a voltage that is higher than a voltage that is applied to the fan when the fan is determined not...
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8062001 |
Method for controlling pump transitions in a multi-mode hybrid transmission
A method of pressure control for transmissions having a hydraulic circuit selectively communicating with first and second pumps via first and second regulators includes commanding communication to...
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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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7955056 |
Method for controlling a compressed air installation comprising several compressors, control box applied thereby and compressed air installation applying this method
Method for adjusting a compressed air installation using several electrically driven compressors of what is called the “loaded/unloaded” type and/or the turbo compressor type and/or the com...
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7909582 |
Vehicular oil pump control apparatus
A control apparatus for controlling two oil pumps which are provided on a vehicle wherein the two oil pumps are selectively driven by respective different drive power sources such that one of the...
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7905853 |
Dialysis system having integrated pneumatic manifold
A dialysis machine valve manifold assembly includes a plurality of pneumatic valves; a plate including a first side and a second side, the plurality of pneumatic valves mounted to the first side of...
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7894191 |
Fan rotation control method, fan rotation control system, and fan rotation control program
The present invention aims to appropriately cool an operation unit and to suppress power consumption and noise according to the configuration and the operation state in a computer system of an...
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7878765 |
System and method for monitoring operation of a pump
Systems and methods for monitoring operation of a pump, including verifying operation or actions of a pump, are disclosed. A baseline profile for one or more parameters of a pump may be...
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7874807 |
Air compressor with shut-off mechanism
A compressor system is disclosed, comprising a first pump driven by a D/C motor, a second pump driven by an A/C motor, and a switch which allows a user to manually selectively engage of one of the...
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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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7850431 |
System and method for control of fluid pressure
Embodiments of the present invention are related to a pumping system that accurately dispenses fluid using a multiple stage (“multi-stage”) pump. More particularly, embodiments of the present inv...
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7806347 |
Water pump and fountain with pump
A water pump with a housing that has a pump housing part provided with an intake opening and an outlet opening and a motor housing part. An impeller with a shaft is rotatably arranged in the pump...
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7793509 |
System and method for capacity control in a multiple compressor chiller system
A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid...
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7789632 |
Fast enclosure pumping with power saving
A method and apparatus for reducing the pressure in an enclosure are provided. The method includes at least one primary pump on the outlet side and one secondary pump on the inlet side connected in...
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7758317 |
Method of analyzing vaporization pattern of solvent and solvent vacuum vaporization device
A method for analysis of solvent evaporation patterns includes: continuously evacuating the gas of a single-component or multicomponent solvent evaporated under desired evaporation conditions from...
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7753655 |
Modular system for the control of compression systems
A modular system for the control of at least one compression system for the compression a fluid medium, said compression system comprising compressors (C1-C7) and their controllers (A1-A7) for the...
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7722764 |
Gradient pump apparatus
A gradient pump apparatus which is capable of continuously and precisely feeding, to a chromatograph, eluents at intervals of certain time and at a constant flow rate in units of nano-liter per...
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7695250 |
Dual pump assembly
The apparatus of the present invention provides a compact dual-pump assembly for an automotive transmission. The dual-pump assembly preferably includes a housing having a valve assembly mounted...
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7661316 |
Method and apparatus for sensing and controlling fan speed
One embodiment of the present invention provides a system that determines fan speeds for a set of fans in a computer system. During operation, the system receives time-series data collected by a...
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7630201 |
Heat radiating apparatus and electronic apparatus
While one of ventilation fans operates, the other ventilation fan is at rest. Air flows from the operating ventilation fan to the ventilation fan at rest. The airflow passes through an air passage...
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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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7565903 |
Oven
The invention aims at reducing the beating noise generated from motors of equipments placed in a galley unit of an aircraft. A galley unit 1 of an aircraft includes a cabinet 10 formed of honeycomb...
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7544046 |
Vacuum pump
A vacuum pump (10) includes a pump unit (14) and an operating unit (12) arranged spaced from the pump unit (14). The operating unit (12) is connected with the pump unit (14) for controlling it. The...
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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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7282873 |
Mutual active cancellation of fan noise and vibration
A multi-fan apparatus and method incorporates mutual active cancellation of fan noise and/or vibrations. The multi-fan apparatus includes two or more fans circuits, each comprising a fan, a fan...
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7252483 |
Method of managing time, at which maintenance in a gas compressor multiple system should be carried out
The method of managing time M, at which maintenance of a gas compressor multiple system incorporating therein a plurality of gas compressors should be carried out, involves making a comparison...
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7248004 |
Cooling fan, in particular for motor vehicles
A radiator blower, in particular for motor vehicles, is indicated that comprises a plurality of individual fans (11, 12), each having an electrical drive motor (13, 14), and a plurality of switches...
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7201016 |
Refrigerant supply apparatus
A refrigerant supply apparatus for supplying a refrigerant to a cooling target. The apparatus includes a refrigerant supply channel through which pure water as the refrigerant is supplied to the...
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7174731 |
Rotational speed control system, rotatingly driving system, air blow system, clean bench, outdoor unit of air conditioner
This invention relates to a rotational speed control system including a plurality of motor drivers for driving motors, and the object thereof is to drive a plurality of motors at the same...
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7028491 |
Method and apparatus for reducing inrush current in a multi-stage compressor
A compressor assembly having a first compression mechanism operatively coupled to a first motor and a second compression mechanism operatively coupled to a second motor. The first compression...
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6954684 |
Intelligent cooling fan
A cooling fan including a fan module, a microcontroller, and a bus interface. The microcontroller is coupled to the fan module and is capable of adjusting a speed of the cooling fan based on a...
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6840743 |
Plural fan installation for a cooling system for a motor vehicle, with a control unit, for controlling plural fan motors, mounted within one motor housing
The present invention provides a fan installation for a cooling system of a motor vehicle, comprising at least two fans which respectively have an electric fan motor arranged in a separate housing...
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6802696 |
Multistage compressor unit and method for regulating such multistage compressor unit
The invention relates to a multistage compressor unit which comprises at least two different compressor elements (1 and 2) driven by means of separate electric motors (3, 4) with an adjustable...
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6755620 |
Independent rotational speed control of multi-stage variable speed compressor
A multi-stage variable speed compressor includes a pressure detector provided for each compressor on and after the second stage for detecting a discharge pressure of a compressor of a stage...
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6752600 |
Fluid system
A fluid system for plural motor driven pumps is disclosed. The fluid system includes a hydraulic motor, a fluid reservoir, and a plurality of fixed displacement pumps. A control valve selectively...
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6659726 |
Variable speed control of multiple motors
A system for variable speed control of a plurality of motors under variable load demand is provided. The system includes a constant power source and a plurality of motors having electrical circuits...
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6638022 |
Hybrid vehicle control device
A hybrid vehicle includes: a metal V-belt type infinitely variable gear-change mechanism 20 whereby the rotation of an engine E is subjected to change in gear ratio, a forwards clutch 14 and a...
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6625519 |
Pump controller for submersible turbine pumps
A method and apparatus for detecting the dry-run operation of a submersible fuel pump operating in a network of fuel pumps is disclosed in which the pump controller is able to switch itself off...
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6589023 |
Device and method for reducing vacuum pump energy consumption
Generally, a vacuum pumping system having efficient power usage is provided. In one embodiment, the vacuum pumping system includes a first pump, a check valve and a second pump. The check valve and...
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6579067 |
Variable speed control of multiple compressors
A system for variable speed control of a plurality of compressors under variable load demand. The system includes a constant power source and a plurality of compressor motors having switches to...
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6565325 |
Processor based pump control systems
A pump control system incorporates a programmed processor and respond to input from multiple floats. The programmed processor can respond to detected float failures in real time by reassigning...
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6544228 |
Infusion device comprising a plurality of infusion pumps
The infusion device comprises a central controller (10) and a plurality of infusion apparatus (12) each connected via a data channel (15) with the controller (10). Each infusion apparatus (12) is...
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