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Class Information
Number: 200/81.9R
Name: Electricity: circuit makers and breakers > Fluid pressure > Flow-responsive type
Description:










Sub-classes under this class:

Class Number Class Name Patents
200/81.9M Magnet 83
200/81.9HG Mercury 4


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8653387 Rotary adjustment for dual switch assembly Feb. 18, 2014
8596295 Mechanical position indicator Dec. 3, 2013
8511338 Water flow detection device Aug. 20, 2013
8201575 Air pressure regulator with flow sensor Jun. 19, 2012
7829806 Flowswitch having O-ring pairs arranged in corresponding pairs of O-ring grooves separated by respective flanges of a pivot rod Nov. 9, 2010
7521639 Safety switch Apr. 21, 2009
7298280 Lighted fluid flow indication apparatus Nov. 20, 2007
6855897 Water treatment apparatus and components Feb. 15, 2005
6812417 Actuator, method of manufacture and application of use Nov. 2, 2004
6635836 Housing contained fluid flow switch and indicator Oct. 21, 2003
6563064 Fluid flow switch sensing device having a test button May. 13, 2003
6510748 Pipe connection system Jan. 28, 2003
6472624 In-line flow switch Oct. 29, 2002
6384352 Air sensitive user input devices May. 7, 2002
6284990 Bore rider switch Sep. 4, 2001
6096224 Filter alert Aug. 1, 2000
6076545 Fire-control sprinkler system riser means Jun. 20, 2000
5939688 Fluid responsive switch pivot arm seal Aug. 17, 1999
5898375 Siphon alarm and restarting mechanism Apr. 27, 1999
5888381 Water filter with pressure actuated flow monitor Mar. 30, 1999
5798697 Exhaust/supply direction indicator Aug. 25, 1998
5780940 Hot wire safety switch Jul. 14, 1998
5755249 Fluid flow monitor May. 26, 1998
5672049 Electromechanical device for the protection of a pump in waterworks of various types, in the absence of water Sep. 30, 1997
5661277 Differential pressure flow sensor using multiple layers of flexible membranes Aug. 26, 1997
5661461 Exhaust/supply direction indicator Aug. 26, 1997
5601109 Fluid flow monitor Feb. 11, 1997
5602372 Differential pressure flow sensor Feb. 11, 1997
5509787 Hydraulic actuator for pressure switch of fluidic system Apr. 23, 1996
5410298 Fluid flow direction detector Apr. 25, 1995
5320280 Pneumatically controlled spraying system having a diaphragm-operated switch Jun. 14, 1994
5291182 Fluid flow direction detector Mar. 1, 1994
5225641 Fluid flow switch assembly Jul. 6, 1993
5144102 Fluid pressure switch adapted for low fluid pressure and throughputs Sep. 1, 1992
5143460 Portable humidifier Sep. 1, 1992
5142271 Fluid flow sensor Aug. 25, 1992
5136128 Hydraulically-piloted switch Aug. 4, 1992
5133044 Portable humidifier Jul. 21, 1992
5131070 Portable humidifier Jul. 14, 1992
5099544 Vacuum motor switch actuator Mar. 31, 1992
5081448 Differential pressure indicator with temperature compensation Jan. 14, 1992
5081328 Flow switch Jan. 14, 1992
5074467 High volume low pressure spray painting system, method of operation and control system therefor Dec. 24, 1991
5014338 Portable air humidifier May. 7, 1991
4992633 Contained pressure activated switch Feb. 12, 1991
4955785 Fan structure with flow responsive switch mechanism Sep. 11, 1990
4933516 Poppet valve flow switch Jun. 12, 1990
4931776 Fluid flow sensor with flexible vane Jun. 5, 1990
4857705 Wall mounted electric air heating device for drying or warming a person Aug. 15, 1989
4805665 Fluid flow check device Feb. 21, 1989

1 2 3










 
 
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