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Class Information
Number: 137/199
Name: Fluid handling > Diverse fluid containing pressure systems > Fluid separating traps or vents > Discriminating outlet for gas > Fluid sensing valve
Description: Separating traps wherein the discrimination is obtained by an outlet valve which is responsive to a fluid.










Sub-classes under this class:

Class Number Class Name Patents
137/202 Float responsive 499
137/200 With vaporized liquid stop 4


Patents under this class:
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Patent Number Title Of Patent Date Issued
8506066 Image forming apparatus Aug. 13, 2013
8485143 Valve arrangement for venting a coolant circuit of an internal combustion engine Jul. 16, 2013
8418712 Air discharge implement for a portable pressurized sprayer Apr. 16, 2013
7866334 Sewer pipe gas exhaust filter apparatus Jan. 11, 2011
7762273 Venting device Jul. 27, 2010
7739957 Hybrid gas generator Jun. 22, 2010
7264024 Valve for closing a container, container and a system and method for filling container Sep. 4, 2007
7159606 Reservoir for a lubricant pump Jan. 9, 2007
7025079 Air bleed-off valve Apr. 11, 2006
6926023 Automatic air release system with shutoff valve Aug. 9, 2005
6893485 Method and kit for use with standard pipe couplings to construct a de-aerator May. 17, 2005
6708716 Valve assembly Mar. 23, 2004
6679431 Thermostat housing with integral valve Jan. 20, 2004
6439863 Fuel pump with vapor lock inhibiting check valve Aug. 27, 2002
6386222 Electronic fill limit control May. 14, 2002
6334459 Multi-fuctional brake bleeder tool Jan. 1, 2002
6247487 Valve assembly Jun. 19, 2001
6199574 Electronic fill limit control Mar. 13, 2001
6165090 Hydraulic tensioner with vent formed with stacked plates Dec. 26, 2000
6095178 System for monitoring and controlling the level of a liquid in a closed container Aug. 1, 2000
6080461 Viscoelastic memory means and flow control valve and use thereof to produce a single-use, auto-destruct injection device Jun. 27, 2000
6047720 Automatic air-vent valve for hydraulic systems Apr. 11, 2000
5762093 Fuel overflow restrictor/water intake restraining devices Jun. 9, 1998
5379795 Venting apparatus Jan. 10, 1995
5305793 Automatic pressurized reservoir bleed valve Apr. 26, 1994
5215312 Housing with a pressure-equalizing element which is retained water-tightly around the edges within a housing wall opening Jun. 1, 1993
5211200 Automatic bleed valves May. 18, 1993
5167248 Dishwasher relief valve Dec. 1, 1992
5135366 Selective valve to pass fluids Aug. 4, 1992
5125428 Device for equalizing pressure between machine housing and the surroundings Jun. 30, 1992
5054510 Selective valve to pass fluids Oct. 8, 1991
5042678 Fuel tank filler tube closure assembly Aug. 27, 1991
4981154 Fluid flow control device Jan. 1, 1991
4972869 Vent valve Nov. 27, 1990
4972865 Anti-spillage and anti-drip device Nov. 27, 1990
4951701 Combination air vent and overpressure valve Aug. 28, 1990
4846214 Fluid additive injector Jul. 11, 1989
4813446 Automatic pressurized reservoir bleed valve Mar. 21, 1989
4759476 Venting apparatus for liquid-filled systems Jul. 26, 1988
4751940 Check valve Jun. 21, 1988
4732131 Fuel line purging device Mar. 22, 1988
4524793 Automatic reservoir bleed valve Jun. 25, 1985
4469247 Blast aerator Sep. 4, 1984
4467827 Venting and degasifying valve for a liquid-filled system Aug. 28, 1984
4446869 Water absorbing trap to protect an infrared exhaled carbon dioxide apnea monitor of a patient's respiration May. 8, 1984
4372353 Arrangements for sensing the presence of liquid in a vapor line Feb. 8, 1983
4347973 Internal combustion engine coolant system, thermostat therefor and methods of making the same Sep. 7, 1982
4276916 Sensing arrangements for sensing the presence of liquid in a vapor line Jul. 7, 1981
4223695 Novel valve employing hydrophobic and hydrophilic membranes Sep. 23, 1980
4216791 Reflux check valve Aug. 12, 1980

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