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Class Information
Number: 137/239
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Cleaning or steam sterilizing > Reverse fluid flow
Description: Systems in which the cleaning device includes a means for causing a fluid to flow in the reverse direction to the normal flow path to remove undesirable material from the system or parts thereof.










Patents under this class:

Patent Number Title Of Patent Date Issued
8678026 Automatic increased-suction relief apparatus Mar. 25, 2014
8667981 Method of manufacturing a liquid discharge head Mar. 11, 2014
8616231 Valve device for a compressed air supply device and compressed air supply system Dec. 31, 2013
8534321 Stopcock Sep. 17, 2013
8430112 Slurry feed system and method Apr. 30, 2013
8348634 Device for the processing of compressed air, and method for the operation thereof Jan. 8, 2013
8342199 Dispensing equipment utilizing coriolis flow meters Jan. 1, 2013
8104496 Reverse flow back pressure pump Jan. 31, 2012
7984730 Stopcock Jul. 26, 2011
7063098 Flush cartridge apparatus and method of use Jun. 20, 2006
6832621 Transmitter isolation ball valve Dec. 21, 2004
6681792 Reduced-length sleeve valve Jan. 27, 2004
6427715 RV holding tank connector and method Aug. 6, 2002
6336468 Chemical supply tube isolation system Jan. 8, 2002
6314981 Device for connecting and transfer of fluid between a supply reservoir and a receiving reservoir Nov. 13, 2001
6213450 Valves Apr. 10, 2001
6209570 Automatic flush valve Apr. 3, 2001
6132203 Method and apparatus for burning oils of varying viscosity Oct. 17, 2000
6119726 Apparatus for effecting transfer of fluid from any one of a plurality of fluid sources to a single fluid outlet Sep. 19, 2000
6000417 Bi-directional magnetically-operated check valve for high-purity applications Dec. 14, 1999
5975111 Waste tank clog removal system Nov. 2, 1999
5957152 Select valve purge Sep. 28, 1999
5850845 Backflush valve for milking machine system Dec. 22, 1998
5797421 Dry hydrant siphon assembly Aug. 25, 1998
5657786 Zero dead-leg gas control apparatus and method Aug. 19, 1997
5601107 Automated process gas supply system for evacuating a process line Feb. 11, 1997
5588459 Device for facilitating removal of wastewater and sewage from a recreational vehicle Dec. 31, 1996
5584314 Self-cleaning inlet head for a fluid Dec. 17, 1996
5509437 Dry hydrant check valve Apr. 23, 1996
5417728 Reverse flush gas valve May. 23, 1995
5398716 Structure of air compressor waste drain valve Mar. 21, 1995
5353990 Liquid additives dispenser for sprinkler systems Oct. 11, 1994
5246168 Liquid additives dispenser for sprinkler systems Sep. 21, 1993
5178684 Method for cleaning water pipe Jan. 12, 1993
5042522 Airway adapter with backflush tube Aug. 27, 1991
4953581 Self draining valve member for use in underground water lines Sep. 4, 1990
4573492 Discharge control valve Mar. 4, 1986
4563312 Gas supplying apparatus Jan. 7, 1986
4517824 Solvent dumping apparatus May. 21, 1985
4508138 Polyjet valve with backwash Apr. 2, 1985
4442859 Control valve Apr. 17, 1984
4390049 Apparatus for reciprocating liquid in a cooling system of an internal combustion engine Jun. 28, 1983
4375821 Control value Mar. 8, 1983
4275860 Full span shipboard fueling system for aircraft Jun. 30, 1981
4220173 Time delay fluid valve Sep. 2, 1980
4047540 Multi-path valve structure having extended life and backwashing capability Sep. 13, 1977
4045004 Chemical mixing and pumping apparatus Aug. 30, 1977
3985300 Self-purging injection valve Oct. 12, 1976
3938541 Shaft seal for a check valve Feb. 17, 1976











 
 
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