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Class Information
Number: 137/87.02
Name: Fluid handling > Self-proportioning or correlating systems > Liquid level responsive
Description: Subject matter wherein the sensor is detecting the variation in an uppermost horizontal surface of the liquid in one of the flow lines and in response thereto the sensor controls the flow in the other flow line.

Patents under this class:

Patent Number Title Of Patent Date Issued
8584691 Additive dispensing system and method Nov. 19, 2013
8290684 Fuel stability methods and systems Oct. 16, 2012
8267108 Additive dispensing system and method Sep. 18, 2012
7931019 Self-powered pump for heated liquid, fluid heating and storage tank and fluid heating system employing same Apr. 26, 2011
7849871 Method and apparatus for controlling a fluid system Dec. 14, 2010
7810516 Control of fluid conditions in bulk fluid distribution systems Oct. 12, 2010
7300196 Automatic dilution system with overflow protection Nov. 27, 2007
6656871 Method for production of catalyst Dec. 2, 2003
6599857 Method for production of catalyst Jul. 29, 2003
5862946 Gas dissolution under pressure Jan. 26, 1999
5209254 Water and sewerage system for construction, and protection for the same May. 11, 1993
4321939 Multi-liquid flow proportioning device Mar. 30, 1982

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