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Class Information
Number: 137/101.21
Name: Fluid handling > Self-proportioning or correlating systems > Self-proportioning flow systems > Flow displacement element actuates electrical controller
Description: Subject matter comprising an electrical controller responsive to a flow displacement element.

Patents under this class:

Patent Number Title Of Patent Date Issued
8475550 Self-optimizing odorant injection system Jul. 2, 2013
8349038 Self optimizing odorant injection system Jan. 8, 2013
8091575 Valve system Jan. 10, 2012
7287540 Method for introducing drag reducers into hydrocarbon transportation systems Oct. 30, 2007
6886639 High flow foam system for fire fighting applications May. 3, 2005
6609534 Multi-additive injection system for aviation fuel Aug. 26, 2003
6543469 System for continuously manufacturing a composite preform Apr. 8, 2003
6418954 System and method for dividing flow Jul. 16, 2002
6253779 Blending system and method using an auxiliary measuring device Jul. 3, 2001
6142162 System and method for odorizing natural gas Nov. 7, 2000
6000468 Method and apparatus for the downhole metering and control of fluids produced from wells Dec. 14, 1999
5878772 Tank truck fuel delivery system having a selective dye injection system Mar. 9, 1999
5746241 Precision dispensing system May. 5, 1998
5722449 Arrangement in connection with a gas mixer Mar. 3, 1998
5609180 Liquid alkali system for fiber reactive dyeing Mar. 11, 1997
5537914 Beverage blending and proportioning Jul. 23, 1996
5494112 System for introduction of concentrated liquid chemical foamant into a water stream for fighting fires Feb. 27, 1996
5490766 Precision small displacement fluid pump Feb. 13, 1996
5490726 Apparatus for proportioning two components to form a mixture Feb. 13, 1996
5476115 Automatic gas blending system Dec. 19, 1995
5441072 Fuel additive metering system Aug. 15, 1995
5407267 Method and apparatus for forming and dispensing coating material containing multiple components Apr. 18, 1995
5368059 Plural component controller Nov. 29, 1994
5247957 Modular lubrication multiple concentration control apparatus Sep. 28, 1993
5218988 Liquid feed system Jun. 15, 1993
5143257 System for proportioned liquid dispensing Sep. 1, 1992
4821761 Closed loop pump control system Apr. 18, 1989
4747272 Frozen comestibles with improved over-run control May. 31, 1988
4642222 Polymer feed system Feb. 10, 1987
4554939 Metering apparatus Nov. 26, 1985
4354688 Hydraulic circuit for a tractor drawn implement having remote variable height selector Oct. 19, 1982
4337786 Variable rate fertilizer injection system Jul. 6, 1982
4335737 Proportioning and mixing immiscible liquids Jun. 22, 1982
4327759 Slurry producing apparatus May. 4, 1982
4324294 Chemical injection control system for fire fighting Apr. 13, 1982
4246969 Chemical injection system for fire fighting Jan. 27, 1981
4199303 Feeder for apparatus for ejecting a mixture of a plurality of liquids Apr. 22, 1980
4176672 Mixing apparatus for a first liquid component with at least one additional component Dec. 4, 1979
4073304 System for calibrating a pump Feb. 14, 1978
4043906 Method and apparatus for reducing the transient effects of liquid compressibility in a liquid chromatography system Aug. 23, 1977
4007755 Component injection system Feb. 15, 1977
4006752 Control for fluid flow system Feb. 8, 1977

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