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Class Information
Number: 137/187
Name: Fluid handling > Diverse fluid containing pressure systems > Fluid separating traps or vents > Discriminating outlet for liquid > With fluid responsive valve > Level responsive
Description: Separating traps wherein the valve is controlled by the level of liquid in the trap.










Sub-classes under this class:

Class Number Class Name Patents
137/192 Float 105
137/188 Weight or pressure 10


Patents under this class:

Patent Number Title Of Patent Date Issued
8464747 Steam Trap Jun. 18, 2013
7952341 Multi-stable electronic circuit state control May. 31, 2011
7243673 Gas injection device Jul. 17, 2007
6588443 Method of draining condensate and condensate drain device Jul. 8, 2003
6402820 Fluidic level control systems Jun. 11, 2002
6390114 Method and apparatus for suppressing and controlling slugflow in a multi-phase fluid stream May. 21, 2002
6279593 Electric steam trap system and method of draining condensate Aug. 28, 2001
6276894 Method and device for drawing condensate off from compressed-gas systems Aug. 21, 2001
6206025 Device and method for removing condensate from gas pressure systems Mar. 27, 2001
6196253 Continuously operated condensate drain valve Mar. 6, 2001
6035882 Monitoring condensate traps Mar. 14, 2000
5544672 Slug flow mitigation control system and method Aug. 13, 1996
5469879 Condensate trap and drain for systems under pressure Nov. 28, 1995
5337779 Automatic drain device Aug. 16, 1994
5017199 Spent solvent recovery in circuit processing May. 21, 1991
4974626 Condensate trap for systems under pressure Dec. 4, 1990
4746223 Meter for integrating the operating time of a steam trap May. 24, 1988
4505427 Condensate drain valves Mar. 19, 1985
4336821 Solenoid-actuated drain valve Jun. 29, 1982
4308889 Electric conductive type steam trap Jan. 5, 1982
4261382 Condensate drain valves Apr. 14, 1981
4202367 Circuit arrangement for regulating the level of liquid in vessels May. 13, 1980











 
 
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