| |
 |
|
Class Information
Number: 251/129.05
Name: Valves and valve actuation > Electrically actuated valve > Having means to produce digital pulses
Description: Subject matter wherein the valve actuator includes means for providing discrete pulses of electrical energy, i.e., "off" or "on", or "0" or "1" electrical signals.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7387289 |
Method and apparatus for driving a solenoid proportional control valve utilized for flow rate control |
Jun. 17, 2008 |
| 7377480 |
Electrohydraulic valve servomechanism with adaptive resistance estimator |
May. 27, 2008 |
| 7237516 |
Method for controlling an actuator, using a retaining mark space ratio |
Jul. 3, 2007 |
| 7188592 |
Position sensor of a valve actuator for an internal combustion engine |
Mar. 13, 2007 |
| 7177725 |
System for the monitor and control of rest rooms |
Feb. 13, 2007 |
| 7165754 |
Electromagnetic valve |
Jan. 23, 2007 |
| 7156365 |
Method of controlling microvalve actuator |
Jan. 2, 2007 |
| 7051992 |
Tubeless actuator with reduced secondary air gap |
May. 30, 2006 |
| 7032549 |
Valve lift sensor |
Apr. 25, 2006 |
| 6978978 |
PWM voltage clamp for driver circuit of an electric fluid dispensing gun and method |
Dec. 27, 2005 |
| 6966325 |
Method for manipulating dosage control apparatus |
Nov. 22, 2005 |
| 6932317 |
Low power DC solenoid valve |
Aug. 23, 2005 |
| 6854712 |
Capillary valve that can be pulsed |
Feb. 15, 2005 |
| 6820856 |
Manually-opened and latchable with only residual magnetism, two-way two-position fluid control valve assembly and methods of operation |
Nov. 23, 2004 |
| 6810841 |
Electronic valve actuator control system and method |
Nov. 2, 2004 |
| 6789558 |
Digitally controlled direct drive valve and system and method for manufacturing the same |
Sep. 14, 2004 |
| 6786235 |
Pulsed width modulation of 3-way valves for the purposes of on-line dilutions and mixing of fluids |
Sep. 7, 2004 |
| 6739573 |
Canister purge valve noise attenuation |
May. 25, 2004 |
| 6729601 |
Extended range proportional valve |
May. 4, 2004 |
| 6722626 |
Valve providing increase in flow for increase in power level |
Apr. 20, 2004 |
| 6679278 |
Controllable valve particularly for delivering a pulsed flow of fluid |
Jan. 20, 2004 |
| 6644257 |
Method for adjusting an actuator |
Nov. 11, 2003 |
| 6634277 |
Solenoid valve control and method of controlling a solenoid valve |
Oct. 21, 2003 |
| 6619613 |
Gas flow rate controller and gas appliance using the same |
Sep. 16, 2003 |
| 6592099 |
Silting prevention controller |
Jul. 15, 2003 |
| 6561480 |
Motor operated valve |
May. 13, 2003 |
| 6390113 |
Process for setting into oscillation an electromagnetic actuator |
May. 21, 2002 |
| 6382256 |
Three-way flow control valve |
May. 7, 2002 |
| 6322166 |
Solenoid valve control apparatus and brake control apparatus |
Nov. 27, 2001 |
| 6310754 |
Control accuracy of a pulse-operated electromechanical device |
Oct. 30, 2001 |
| 6247493 |
Miniature pulsatile flow controller |
Jun. 19, 2001 |
| 6220275 |
Solenoid valve |
Apr. 24, 2001 |
| 6202672 |
Valve assembly |
Mar. 20, 2001 |
| 6189323 |
Air conditioner with improved valve controller and valve control method therefor |
Feb. 20, 2001 |
| 6186162 |
Leak detection and shut-off apparatus |
Feb. 13, 2001 |
| 6170506 |
Method and circuit for actively cleaning electrohydraulic valves in a hydraulic control valve circuit |
Jan. 9, 2001 |
| 6158715 |
Method and arrangement for the electromagnetic control of a valve |
Dec. 12, 2000 |
| 6145806 |
Miniaturized magnetic valve |
Nov. 14, 2000 |
| 6116230 |
Microprocessor-controlled gas appliance utilizing a single electrode spark ignition system and a pulse width modulated proportional valve |
Sep. 12, 2000 |
| 6102364 |
Control accuracy of a pulse-operated electromechanical device |
Aug. 15, 2000 |
| 6098644 |
Method and apparatus for controlling duty-cycle type solenoid valve |
Aug. 8, 2000 |
| 6095175 |
Clad piezoelectric valve actuator and application of same in controlling highly reactive and corrosive gases |
Aug. 1, 2000 |
| 6073644 |
Fluid-operated regulating apparatus and method of using the same |
Jun. 13, 2000 |
| 6062256 |
Micro mass flow control apparatus and method |
May. 16, 2000 |
| 6047556 |
Pulsed flow for capacity control |
Apr. 11, 2000 |
| 6019347 |
Pulse width modulated gas flow control valve |
Feb. 1, 2000 |
| 6017017 |
Process and apparatus for the recognition of the state of a solenoid valve |
Jan. 25, 2000 |
| 6006527 |
Refrigeration system |
Dec. 28, 1999 |
| 6004127 |
Oil burner |
Dec. 21, 1999 |
| 6003543 |
Electronic gas regulator |
Dec. 21, 1999 |
|
|
|
