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Class Information
Number: 417/29
Name: Pumps > Condition responsive control of pump drive motor > With condition responsive control of pump fluid valve > Fluid and motor controls separately responsive to diverse conditions
Description: Subject matter in which the valve means is controlled in response to one condition of the system and the control means for the motor is responsive to a second condition which (1) differs in kind from the first, e.g., pressure and flow rate, or (2) if of the same kind, differs by the part of the system characterized by the condition, e.g., inlet and discharge pressures of the pump.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7188008 |
System for controlling the operation of at least one aircraft engine |
Mar. 6, 2007 |
| 6751941 |
Foil bearing rotary flow compressor with control valve |
Jun. 22, 2004 |
| 6158965 |
Fluid flow resistance monitoring system |
Dec. 12, 2000 |
| 5820352 |
Method for controlling compressor discharge pressure |
Oct. 13, 1998 |
| 5762475 |
Automatic solenoid control valve calibration |
Jun. 9, 1998 |
| 5584665 |
Liquid drainage system with pneumatic sensor |
Dec. 17, 1996 |
| 5452989 |
Reverse phase and high discharge temperature protection in a scroll compressor |
Sep. 26, 1995 |
| 5197859 |
Well pump system |
Mar. 30, 1993 |
| 4708594 |
Method of starting a variable-speed pump turbine or a variable speed pump |
Nov. 24, 1987 |
| 4432698 |
Compressor having a starting load reducing apparatus |
Feb. 21, 1984 |
| 4358247 |
Oil cooled compressor |
Nov. 9, 1982 |
| 4344741 |
Automatic water supply system |
Aug. 17, 1982 |
| 4321014 |
Constant flow pumping apparatus |
Mar. 23, 1982 |
| 4246938 |
Vapor collecting system |
Jan. 27, 1981 |
| 4243349 |
Containers for goods |
Jan. 6, 1981 |
| 3994623 |
Method and apparatus for controlling a dynamic compressor |
Nov. 30, 1976 |
| 3957395 |
Method and apparatus for controlling a pump |
May. 18, 1976 |
| 3951568 |
Pump check valve control apparatus |
Apr. 20, 1976 |
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