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Class Information
Number: 137/204
Name: Fluid handling > Diverse fluid containing pressure systems > Fluid separating traps or vents > With liquid emptying means > Self-emptying
Description: Separating traps wherein the outlet empties the system of liquid of its own volition, as when the system pressure is removed.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8596292 Flush-enabled controlled flow drain Dec. 3, 2013
8028438 Moisture condensation control system Oct. 4, 2011
7985378 Flushing in a multiple loop reactor Jul. 26, 2011
7753069 Drain valve Jul. 13, 2010
7326266 Coalescing type filter apparatus and method Feb. 5, 2008
6872055 Mud suction unit Mar. 29, 2005
6779547 Automated condensation drain system Aug. 24, 2004
6540028 Automatic condensate drain device Apr. 1, 2003
6443173 Automatic drain for a fire protection sprinkler system Sep. 3, 2002
6276894 Method and device for drawing condensate off from compressed-gas systems Aug. 21, 2001
6196253 Continuously operated condensate drain valve Mar. 6, 2001
6170511 Normally open purge valve Jan. 9, 2001
6164312 Purge valve Dec. 26, 2000
6109289 Drain valve Aug. 29, 2000
6024112 Automatic drain valve Feb. 15, 2000
5941271 Water release valve Aug. 24, 1999
5867918 Gas dryer with an outlet chamber Feb. 9, 1999
5865208 Water release valve Feb. 2, 1999
5762094 Automatic valve drain Jun. 9, 1998
5749391 Condensate drainage system for pneumatic tanks May. 12, 1998
5709246 Booster valve with contaminant ejection for use in a pneumatic brake system Jan. 20, 1998
5692540 Automatic air compressor drain device Dec. 2, 1997
5530987 Condensate drain controller Jul. 2, 1996
5435422 Automatic wet tank drain valve Jul. 25, 1995
5353835 Air tank drain Oct. 11, 1994
5337779 Automatic drain device Aug. 16, 1994
5205314 Air compressor condensate removal system Apr. 27, 1993
5205315 Automatic wet tank drain valve Apr. 27, 1993
5195874 Multistage compressor Mar. 23, 1993
5144974 Purge valve assembly Sep. 8, 1992
4987919 Pneumatically activated drain valve for compressed air Jan. 29, 1991
4928724 Automatic wet tank drain valve May. 29, 1990
4922947 Automatic membrane drain device for pneumatic circuits May. 8, 1990
4883995 Automatic oil draining system for generators Nov. 28, 1989
4768542 Drain valve Sep. 6, 1988
4622996 Aspirator for pulse-jet air cleaner Nov. 18, 1986
4622995 Integral valve and tank assembly for pulse-jet air cleaners Nov. 18, 1986
4580543 Ventilator for internal combustion engine Apr. 8, 1986
4570852 Drain valve Feb. 18, 1986
4505427 Condensate drain valves Mar. 19, 1985
4494561 Condensate discharging apparatus Jan. 22, 1985
4453893 Drainage control for compressed air system Jun. 12, 1984
4383545 Automatic drain system for compressed air systems and the like May. 17, 1983
4353387 Drainage device Oct. 12, 1982
4336821 Solenoid-actuated drain valve Jun. 29, 1982
4331268 Seal for compressed air line drain device May. 25, 1982
4328825 Fuel tank water drain system May. 11, 1982
4269217 Separator valve May. 26, 1981
4261382 Condensate drain valves Apr. 14, 1981
4248190 Fluid injection apparatus for use with vehicles having on-board compressed air systems Feb. 3, 1981

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