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Class Information
Number: 137/51
Name: Fluid handling > Speed responsive valve control > With other condition responsive valve control
Description: Control systems including additional means responsive to another operating condition which may actuate the same valve which is actuated by the speed responsive means, or another valve.

Sub-classes under this class:

Class Number Class Name Patents
137/52 Governor drive failure responsive 1

Patents under this class:

Patent Number Title Of Patent Date Issued
8398938 Microfluidic thermal bend actuated pressure pulse valve Mar. 19, 2013
8271142 Device and method for controlling valve Sep. 18, 2012
7503203 Rotary valve and analytical chromatographic system using the same Mar. 17, 2009
7432845 Hot-water supply system Oct. 7, 2008
7418885 Device for driving a plurality of hydraulic shift cylinders and hydraulic supply system for a twin-clutch transmission Sep. 2, 2008
7279076 Apparatus and method for handling easily polymerizable substance, apparatus for extracting liquid from apparatus under reduced pressure, and process for producing easily polymerizable substanc Oct. 9, 2007
6530390 Pressure reducing valve Mar. 11, 2003
6164926 Variable displacement compressor Dec. 26, 2000
5819777 Flow control device Oct. 13, 1998
4815436 Apparatus for preventing the outlfow of a fuel from a fuel tank for vehicle Mar. 28, 1989
4250713 Apparatus for conducting liquid helium between a transporter and an electric machine Feb. 17, 1981
4216554 Automatic freeze-proof drain system Aug. 12, 1980
4214437 Speed adjust Jul. 29, 1980
4164234 Metering device Aug. 14, 1979
4038956 Fluid pressure regulator Aug. 2, 1977

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