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Match Document Document Title
9017039 Hydraulic pump operating device and method for use in hydraulic system  
The rotational frequency of a variable speed motor is set to a normal rotational frequency setting value (N1). A pressure variation range (ΔP) is detected based on a pressure detection value P, of...
9011107 Air compressor system and method of operation  
Air compressor systems, upgrade kits, computer readable medium, and methods for controlling an air compressor for improved performance. The methods may include receiving a working air requirement;...
8939731 Character parameters obtaining method for displacement control mechanism of hydraulic pump and detecting device for carrying out the method  
A character parameters obtaining method for a displacement control mechanism of a hydraulic pump and a detecting device for carrying out the method are disclosed. The method involves constructing...
8932026 Fuel supply apparatus  
A fuel supply apparatus includes a fuel pump having an electrically driven motor. A controller is connected to the motor of the first fuel pump and is capable of determining an estimated pressure...
8924101 System and method for adjusting movement of an irrigation apparatus  
A system and method for adjusting movement of an irrigation apparatus to help compensate for transient conditions occurring during operation of the apparatus to accomplish a substantially uniform...
8920131 Pump control and method  
A pump control (20) and method are provided for controlling a pump (16) for a pressurized liquid supply system (10). The pump control (20) includes a controller (38) configured to provide at least...
8911217 Abnormality detecting device for hydraulic system  
An abnormality detecting device for a hydraulic system is disclosed. The hydraulic system has a pressure level switching mechanism that adjusts oil pressure in accordance with the operating state...
8907789 Pump control unit  
A pump control system includes a controller coupled to first and second pressure sensors. The sensors couple serial pressure related information to the controller. The controller can evaluate...
8905720 Arrangement and method for monitoring a hydraulic system  
An arrangement for monitoring a supply within a platform. A sensor is arranged to generate sample values relating to a fluid characteristic variable, wherein the fluid is fed by the supply within...
8894381 Compressor capacity control method and device for controlling the capacity of a compressor  
A compressor capacity control method and a device is provided. The changeover from a loading state regarding the compressor to an unloading state regarding the compressor and vice versa is...
8814639 Fan system comprising fan array with surge control  
A fan system for a variable air volume heating and/or air conditioning unit comprising a fan array with a control system to eliminate surge at low operating flows and to maximize operating range....
8801392 Controlling mechanism for activation of an air pump to be implemented in an inflatable object  
A controlling mechanism for an inflatable object has a valve controlling assembly for opening/closing operation of the valve, a pressure controlling assembly for sensing pressure difference to...
8784072 Compression apparatus with variable speed screw and method  
An apparatus is provided for compressing a loose solid feedstock. The apparatus includes a two stage compressor. The first compression stage is a screw compressor. The second compressor stage is a...
8784070 Air compressor  
When an air pressure in a tank part (5) drops from a maximum set pressure value (A1) to or below at least one restart set pressure value defined to lie in a range between the maximum set pressure...
8763638 Check valve  
A check valve comprising a valve housing, which comprises an inlet, an outlet, and a valve channel. The valve channel connects the inlet to the outlet and has a valve seat. The check valve further...
8764408 User interface and controls for a pump device  
A pump system selectably and dynamically controls the flow rate of a fluid being delivered to a patient's body over a wide range of flow rates. The pump system includes an infusion tubing, a...
8728215 Cyclic adsorption process using centrifugal machines  
A cyclic adsorption process is provided having pressurization and depressurization steps and driven by one or more centrifugal machines operating under acceleration and deceleration conditions...
8727737 Submersible pump system  
A submersible pump system includes a submersible pump assembly having one or more stages of impellers and a submersible motor assembly that drives the pump assembly. The submersible pump assembly...
8721295 Vacuum pump self-diagnosis method, vacuum pump self-diagnosis system, and vacuum pump central monitoring system  
There are provided a vacuum pump self-diagnosis method, a vacuum pump self-diagnosis system, a vacuum pump central monitoring system capable of making self-diagnosis of a dry vacuum pump. A vacuum...
8714933 Water supply apparatus  
A water supply apparatus is capable of performing a backup operation, without lowering water supply capability, when a failure has occurred in one control substrate due to surge or noise caused by...
8702180 Motor/pump assembly  
A motor and pump assembly for providing pressure to a brake actuating device of a motor vehicle brake system is described herein. The assembly comprises an electric motor and a double diaphragm...
8696322 Pump with automatic deactivation mechanism  
An automatic deactivation mechanism is configured for an air bladder pump having a casing and a motor located therein to pump air into an air bladder from the atmosphere and through an air valve...
8690542 Method and arrangement for soft start up of a pump system  
A method and arrangement for soft start up of a pump system, that includes a pump for generating a liquid flow, an electrical drive disposed to actuate the pump, and a pressure sensor disposed to...
8678773 Method and device for controlling a vacuum apparatus  
Method and device for controlling a vacuum apparatus. A method for controlling a vacuum apparatus that applies vacuum to a vacuum accumulator with a pump of a pneumatically operated servo unit of...
8667783 Method and system for controlling the operation of a pump  
Method for controlling the operation of a pump driven by an electric motor and controlled by a controller, according to which an electronic control module (ECM) sends, to the controller, a PWM...
8668763 Apparatus for pervaporation control in liquid degassing systems  
A liquid degassing apparatus is arranged to prevent pervaporated solvent cross-contamination by counteracting liquid vapor pervaporation flow. Liquid vapor pervaporation cross-contamination among...
8662859 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...
8657918 Cyclic adsorption process using centrifugal machines  
A cyclic adsorption process is provided having pressurization and depressurization steps and driven by one or more centrifugal machines operating under acceleration and deceleration conditions...
8641383 Pump and pump control circuit apparatus and method  
Embodiments of the invention provide a method of controlling a pump. The method includes sensing a pressure in the pump and entering a low-flow mode when the sensed pressure in the pump is greater...
8641385 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...
8608450 Compressed air manufacturing facility  
The present invention is a compressor compressing air, an electric motor driving the compressor, and an inverter variably controlling a rotating speed of the electric motor, the compressed air...
8602747 Ventilation device and electrical equipment in which same is installed  
Having a correlative relation indicator for indicating a correlative relation so that the supply current to be supplied to an inverter circuit may be varied proportionally to the voltage applied...
8596987 Electric compressor control device  
A device controls power supplied from an inverter having a semiconductor switching element to an electric compressor having an external drive source or a built-in motor. The device includes: an...
8562303 Fuel supply system  
A fuel supply system has an in-tank module. The in-tank module is provided with a pump, a filter, a pressure regulator and a pressure sensor detecting a fuel pressure. The pressure sensor is...
8561627 Calibration of a chemical dispense system  
Method for providing a fluid at a target pressure. In one implementation, the method may include providing a semiconductor solution at a velocity to a supply line through a dispenser, measuring a...
8545198 Surgical cassette  
A surgical system and cassette, the cassette having an identification method that is specific to the cassette. Suitable methods include bar coding or Radio Frequency Identification (“RFID”)....
8535016 High pressure pump control  
A feedback control loop for a high pressure pump modifies the accumulator velocity and pressure during solvent transfer. The accumulator velocity is adjusted to maintain the system pressure equal...
8517692 Pressure limiting controller  
A method of controlling pressure in a mud pump system includes generating a pressure limiting factor output using a pressure feedback input and a motor speed input to calculate a fluid conductance...
8480373 Filter loading  
A pumping system for moving water of a swimming pool includes a water pump, a variable speed motor, and a filter arrangement in fluid communication with the pump. The pumping system can also...
8475138 Self-adaptive piston blood pump  
A self-adjusting fluid pump that includes a piston pump containing at least one piston with a pressure sensor. The fluid pump including at least one fluid-containing pump chamber within the piston...
8469674 Operation control device and method of compressor  
Disclosed are an operation control device of a compressor, which can reduce motor loss by applying an AC power to a motor of the compressor without a switching operation of a control unit, and a...
8444392 Pressure control  
A method and apparatus is disclosed for determining pressure provided by a pump of a topical negative pressure (TNP) system. The method includes the steps of determining a value associated with a...
8440003 Apparatus for pervaporation control in liquid degassing systems  
A liquid degassing apparatus is arranged to limit pervaporation through a membrane by attenuating pressure oscillations developed by a vacuum pump. The attenuation is obtained through a...
8425202 Modular, universal and automatic closed-loop pump pressure controller  
A universal controller (16) for an electric motorized pump (18) having a mechanical switch (19) for turning on and off electrical power to the pump, and method of operation of same. The controller...
8393875 Pressure-controlled liquid supply system and pump control device for use therein  
A pressure-controlled liquid supply system uses a pump control device to switch a pump on and off in response to a pressure level in the pumped liquid. The pump control device minimizes short...
8382444 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...
8366377 FC fan flow measurement system using a curved inlet cone and pressure sensor  
An airflow volume sensing system for determining the flow rate through a fan includes a curved inlet cone with a pressure sensor at the minimum diameter of the cone, wherein the flow volume...
8360738 Device for regulating the operating pressure of an oil-injected compressor installation  
Device for adjusting the operating pressure of an oil-injected compressor installation with a compressor element (2) driven by a motor (4) with an adjustable rotational speed and a control module...
8348624 Efficiency optimized air flow apparatus and method  
A method for controlling the motor of an air handling system to provide a desired output of flowing air therefrom while minimizing the power used by the motor, including operationally connecting a...
8342810 Start-up control device and method for electric scroll compressor  
A device executing a start-up control method for an electric scroll compressor has a thermistor (18) and a pressure sensor (20) which, prior to the start-up of the scroll compression unit, detect...

Matches 1 - 50 out of 326 1 2 3 4 5 6 7 >