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Class Information
Number: 417/12
Name: Pumps > Condition responsive control of pump drive motor > Having timer or delay means
Description: Subject matter having means related to the sensing means for either (1) causing the state of operation of the drive motor to be maintained for a specified period of time after a condition or change in condition is detected by the sensing means before allowing the state of operation to be changed in accordance with the sensed condition, (2) allowing the state of operation of the drive motor to be changed in response to a sensed condition and then causing said changed state of operation to be maintained for a specified period of time regardless of further condition changes, (3) causing the control means or sensing means to be ineffective for a specified period of time during motor start up, or (4) altering the effectiveness of the control means for a specified period of time after the sensing means has detected a change in condition.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7611331 |
Device and method for controlling a two cylinder thick matter pump |
Nov. 3, 2009 |
| 7588422 |
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Sep. 15, 2009 |
| 7484938 |
Electronic control for pool pump |
Feb. 3, 2009 |
| 7459869 |
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Dec. 2, 2008 |
| 7446494 |
HVAC actuator having torque compensation |
Nov. 4, 2008 |
| 7393185 |
Fuel pump with automatic shutoff |
Jul. 1, 2008 |
| 7338260 |
System and method for controlling current provided to a stepping motor |
Mar. 4, 2008 |
| 7331766 |
Compressor |
Feb. 19, 2008 |
| 7331773 |
Pump provided with exhaust valve device and hemodynamometer incorporating the same |
Feb. 19, 2008 |
| 7314039 |
Method of controlling operation of a liquid-fuel combustion appliance |
Jan. 1, 2008 |
| 7252483 |
Method of managing time, at which maintenance in a gas compressor multiple system should be carried out |
Aug. 7, 2007 |
| 7222493 |
Compressor diagnostic system |
May. 29, 2007 |
| 7156983 |
Swimming pool backwash assembly |
Jan. 2, 2007 |
| 7128538 |
Centrifugal fluid pump apparatus |
Oct. 31, 2006 |
| 7118347 |
Method for activating an electric motor and a metering pump by supplying predetermined pulse intervals to supply predetermined fluid quantities |
Oct. 10, 2006 |
| 7118348 |
Compressed air system and method of control |
Oct. 10, 2006 |
| 7100382 |
Unitary control for air conditioner and/or heat pump |
Sep. 5, 2006 |
| 7077155 |
Hot water recirculating system |
Jul. 18, 2006 |
| 7044714 |
System and method for controlling pumping of non-homogenous fluids |
May. 16, 2006 |
| 7028491 |
Method and apparatus for reducing inrush current in a multi-stage compressor |
Apr. 18, 2006 |
| 7000626 |
Instantaneous and constant fluid delivery system |
Feb. 21, 2006 |
| 6962162 |
Method for operating a multi family/commercial plumbing system |
Nov. 8, 2005 |
| 6910344 |
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Jun. 28, 2005 |
| 6908289 |
Fuel pump with automatic shutoff |
Jun. 21, 2005 |
| 6895985 |
Smart device and system for improved domestic use and saving of water |
May. 24, 2005 |
| 6893227 |
Device for prevention of backward operation of scroll compressors |
May. 17, 2005 |
| 6874326 |
Air conditioning system with two compressors and method for operating the same |
Apr. 5, 2005 |
| 6826490 |
Transducer calibration system: apparatus and method |
Nov. 30, 2004 |
| 6804971 |
Apparatus and method for controlling compressors of air conditioner |
Oct. 19, 2004 |
| 6799950 |
Method and apparatus for controlling a compressor |
Oct. 5, 2004 |
| 6796776 |
Pumping system and method with improved screen |
Sep. 28, 2004 |
| 6715995 |
Hybrid compressor control method |
Apr. 6, 2004 |
| 6715994 |
Bilge pump |
Apr. 6, 2004 |
| 6676382 |
Sump pump monitoring and control system |
Jan. 13, 2004 |
| 6669448 |
Pump control method and apparatus |
Dec. 30, 2003 |
| 6663348 |
Method of controlling a compressor, piston-position monitoring system, and compressor |
Dec. 16, 2003 |
| 6640564 |
Vehicle air conditioner with automatic breaking-in operation of compressor |
Nov. 4, 2003 |
| 6632072 |
Pneumatic pump control system and method of making the same including a pneumatic pressure accumulator tube |
Oct. 14, 2003 |
| 6612812 |
Semiautomatic electronic system for sensing and increasing liquid in a containment vessel to a predetermine level |
Sep. 2, 2003 |
| 6592332 |
Pump-off control interrupter |
Jul. 15, 2003 |
| 6585490 |
Vacuum regeneration method for a flywheel system |
Jul. 1, 2003 |
| 6582198 |
Control strategy for a thermally activated diverter valve used in a washing appliance |
Jun. 24, 2003 |
| 6572338 |
Modular air circulator control |
Jun. 3, 2003 |
| 6568426 |
Pressurized water supply systems |
May. 27, 2003 |
| 6537019 |
Fan assembly and method |
Mar. 25, 2003 |
| 6533552 |
System and methods for controlling rotary screw compressors |
Mar. 18, 2003 |
| 6517329 |
Electromagnetic blower and two-passage air supply apparatus |
Feb. 11, 2003 |
| 6474950 |
Oil free dry screw compressor including variable speed drive |
Nov. 5, 2002 |
| 6450771 |
System and method for controlling rotary screw compressors |
Sep. 17, 2002 |
| 6435836 |
Fluid machinery |
Aug. 20, 2002 |
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