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9027587 Method for operating a fluid valve via an oscillating valve motion  
In a method for operating a fluid valve for controlling or regulating a fluid, having at least one movable valve component is displaceable with the aid of at least one electrical actuating signal...
8893673 Variable compression ratio engine tubular control valve  
A tubular valve for adjusting the compression ratio of a variable compression ratio engine includes a straight tube capable of longitudinal translational movement in a valve casing including a...
8740182 Flow rate accuracy of a fluidic delivery system  
Improving the accuracy of the flow rate of a valve in a fluidic delivery device in which a desired flow rate may be achieved by varying the duty cycle of the valve. The flow rate of fluid delivery...
8701703 Method and apparatus for controlling gas flow via a gas shut-off valve assembly  
The present invention comprises a method and apparatus for controlling gas flow via a gas shut-off valve assembly. In at least one embodiment, the assembly is configured to drive its shut-off...
8596609 Solenoid valve  
The invention relates to a solenoid valve with a magnet assembly and a valve cartridge having a pole core, a valve insert connected to the pole core, an armature which is guided within the valve...
8544818 Electronic adapter for controlling a bistable valve  
An electronic adapter and a method for controlling a bistable valve for liquid or gaseous media is provided. The valve has a first and a second stable switching state, wherein in the first...
8540209 Active combustion flow modulation valve  
A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are...
8382448 Compressed air supply system for a utility vehicle having a pulse-width modulated valve  
A compressed air supply system for a utility vehicle includes a compressor that can be driven by a drive by a pneumatic clutch, and a valve having a magnetic coil for selectively supplying...
8292262 Flow control valve  
An object is to provide a flow control valve that is capable of reducing or eliminating backlash generated between a male threaded portion and a female threaded portion engaged with the male...
8250855 Procedure for operating a reducing agent metering valve of a SCR-exhaust gas purifying system  
A procedure for dosing a reducing agent into the exhaust gas of an combustion engine with a valve is presented, which shows a solenoid and a movable seal body for adjusting a percolation profile,...
8240635 Flow rate accuracy of a fluidic delivery system  
Improving the accuracy of the flow rate of a valve in a fluidic delivery device in which a desired flow rate may be achieved by varying the duty cycle of the valve. The flow rate of fluid delivery...
8172199 Valve control apparatus and flow rate controller  
A valve control apparatus including a stepping motor coupled to a valve and a motor control unit for controlling the stepping motor is provided. The motor control unit includes a motor control...
8165762 Method of operating a transmission system valve configuration  
A method of operating a valve system of a transmission comprising part of the vehicle drive train through a valve unit and said valve unit's electro-magnetic activator configuration. In a...
8141844 Flow rate accuracy of a fluidic delivery system  
Improving the accuracy of the flow rate of a valve in a fluidic delivery device in which a desired flow rate may be achieved by varying the duty cycle of the valve. The flow rate of fluid delivery...
7762094 Valve control system, valve control apparatus and valve control method  
In a refrigeration cycle system, temperature sensors measure the temperatures Tin and Tout of a refrigerant at the entrance and exit of an evaporator. A control circuit performs PID calculation...
7758015 Solenoid-operated valve controller  
A solenoid-operated valve controller includes a first signal line and a second signal line, which are connected respectively to ends of a first solenoid coil and a second solenoid coil. The first...
7740225 Self adjusting solenoid driver and method  
A fluid dispenser having a dispensing valve movable between open and closed positions for controlling the flow of the fluid from the fluid dispenser. A solenoid is operatively connected to the...
7727363 Microfluidic device and methods for focusing fluid streams using electroosmotically induced pressures  
A microfabricated device employing a bridging membrane and methods for electrokinetic transport of a liquid phase biological or chemical material using the same are described. The bridging...
7578481 Digital programmable driver for solenoid valves and associated method  
A digital programmable driver for a solenoid valve comprises at least one valve driver circuit for opening and closing the valve and a controller capable of sending an output signal to the valve...
RE40499 Pulsed flow for capacity control  
Step control in capacity modulation of a refrigeration or air conditioning circuit is achieved by rapidly cycling a solenoid valve in the suction line, economizer circuit or in a bypass with the...
7387289 Method and apparatus for driving a solenoid proportional control valve utilized for flow rate control  
In a method for driving a solenoid proportional control valve (44) used for flow rate control of a common rail system pump adapted to regulate flow rate by regulating the duty ratio of a pulse...
7377480 Electrohydraulic valve servomechanism with adaptive resistance estimator  
A servomechanism includes a controller which dynamically estimates the resistance of the solenoid coil in an electrohydraulic valve as part of determining a level of electric voltage to apply to...
7237516 Method for controlling an actuator, using a retaining mark space ratio  
The invention relates to a method for controlling an actuator which can be displaced between two end positions, said actuator being impinged in one end position and being capable of displacement...
7188592 Position sensor of a valve actuator for an internal combustion engine  
A sensor of the position of a target is secured to an electromagnetic or electromechanical valve actuator of an internal combustion engine. The target is driven by a reciprocating translatory...
7177725 System for the monitor and control of rest rooms  
The present invention is directed to a rest room control system including one or more sensors configured to monitor or control a function associated with the rest room. The system also includes a...
7165754 Electromagnetic valve  
The invention relates to an electromagnetic valve, the valve coil of which is actuatable by an electric current for removing deposits at the valve seat and the valve closure member in such a...
7156365 Method of controlling microvalve actuator  
In a method of controlling an actuator of a microvalve, a controller is provided for supplying a voltage to the actuator. The controller provides an initial voltage to the actuator which is...
7051992 Tubeless actuator with reduced secondary air gap  
A tubeless actuator includes a frame in which a primary plate and a secondary plate are disposed. A bobbin is disposed within the frame between the primary plate and the secondary plate. The...
7032549 Valve lift sensor  
A valve lift sensor detects the position of an engine valve. The valve lift sensor includes a movable target carried on an engine valve and a stationary coil carried within an engine valve...
6978978 PWM voltage clamp for driver circuit of an electric fluid dispensing gun and method  
An electric fluid dispenser for dispensing a fluid onto a substrate. A power switching circuit is connected to an unregulated power supply providing a varying voltage. A solenoid connected to the...
6966325 Method for manipulating dosage control apparatus  
The invention is directed to a method and circuitry for controlling dosage rates of a treatment solution. An electric pulse is directed through a coil, inducing a magnetic field and causing a...
6932317 Low power DC solenoid valve  
The present invention comprises a diaphragm type solenoid fluid valve assembly of the class used in the on/off control of pressurized fluid flow. The valve assembly has a housing, a solenoid, and...
6854712 Capillary valve that can be pulsed  
In a capillary valve, which can be pulsed and which includes a capillary with a constriction forming a nozzle, a plunger is movably disposed in the capillary and forms, together with the capillary...
6820856 Manually-opened and latchable with only residual magnetism, two-way two-position fluid control valve assembly and methods of operation  
A disclosed is a 2-way 2-position fluid control valve assembly operable to manually open and automatically block fluid flow therethrough. The fluid control valve assembly includes a valve and an...
6810841 Electronic valve actuator control system and method  
A method and system for controlling a valve of an internal combustion engine. The system includes an electromagnet actuator having a coil and an armature magnetically coupled to the coil. The...
6789558 Digitally controlled direct drive valve and system and method for manufacturing the same  
An electrical command signal to a direct drive valve is compensated by a digital signal processor to cause the output hydraulic fluid flow from the valve to conform to a desired predetermined...
6786235 Pulsed width modulation of 3-way valves for the purposes of on-line dilutions and mixing of fluids  
This invention relates to an apparatus comprising a switchable, 3-way valve device that delivers a constant flow rate stream of solution mixture to a chemical analysis instrument. The dilution...
6739573 Canister purge valve noise attenuation  
A valve assembly and method for regulating a fluid flow and attenuating noise. The valve assembly comprises a body having a passage extending between a first port and a second port, a seat...
6729601 Extended range proportional valve  
An extended range proportional valve which can control rates of mass flow over continuous low, intermediate and high ranges has a pilot member mounted on an armature of a solenoid which can be...
6722626 Valve providing increase in flow for increase in power level  
A canister purge valve increases flow through the valve for an increased power level. The canister purge valve includes a housing that defines a volume and has an inlet and an outlet in fluid...
6679278 Controllable valve particularly for delivering a pulsed flow of fluid  
The invention relates to a controllable valve, particularly for delivering a pulsed flow of fluid. It comprises a valve body (10); a valve seat (12) dividing the inside of the body into an inlet...
6644257 Method for adjusting an actuator  
An actuator which is displaced by a force in one end position and is displaced into the other end position by an adjusting device that is controlled using a pulse duration modulated signal. If a...
6634277 Solenoid valve control and method of controlling a solenoid valve  
A solenoid valve control is described, having a switching output stage for controlling a solenoid valve, an arrangement for preselecting a valve opening time, and an arrangement for preselecting a...
6619613 Gas flow rate controller and gas appliance using the same  
Gas flow control apparatus that includes a gas flow control unit having a gas flow adjusting capability and a gas closing capability of selectively opening and closing a gas. A stepping motor is...
6592099 Silting prevention controller  
A relation between an instruction current value (is) to be given to a solenoid valve and its supply time range (t) is predetermined, and a silting prevention current instruction (is) is given to...
6561480 Motor operated valve  
The present invention provides a motor-operated valve having no additional stopper for stopping the rotation of a rotor at fully open and closed states of the valve to allow a reduced number of...
6390113 Process for setting into oscillation an electromagnetic actuator  
A process for setting into oscillation an electromagnetic actuator, which actuates a switching element, in particular an internal combustion engine lift valve, and in which process an armature,...
6382256 Three-way flow control valve  
A three-way flow control valve for refrigeration cycles having two parallel heat exchangers is disclosed. This valve is designed to selectively feed refrigerant to both heat exchangers, or one of...
6322166 Solenoid valve control apparatus and brake control apparatus  
A solenoid-valve controller provided with a solenoid valve C which is switchable between the full closed state where a plunger a abuts on a sheet face b and the full open state where the plunger...
6310754 Control accuracy of a pulse-operated electromechanical device  
A control for controlling an output of a system of an automotive vehicle having an electric-operated control device that controls an output of a system of the automotive vehicle in accordance with...

Matches 1 - 50 out of 232 1 2 3 4 5 >