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Class Information
Number: 137/577
Name: Fluid handling > Systems > Tank with movable or adjustable outlet or overflow pipe
Description: Systems comprising a tank having a discharge passage which may be moved or adjusted with respect to the tank to (1) remove material from a particular part of the tank, or (2) determine the level of material retained in the tank and/or the amount withdrawn from the tank.










Sub-classes under this class:

Class Number Class Name Patents
137/578 Float-supported outlet 46
137/577.5 Horizontally traversing outlet 2
137/579 Swinging outlet pipe or spout 25


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8511342 Cooling apparatus of electronic equipment Aug. 20, 2013
8397735 Dirt separator device with level control Mar. 19, 2013
7753232 Fluid dispensing apparatus Jul. 13, 2010
7703613 Adjustable height inlet/outlet liquid level management tools and systems Apr. 27, 2010
7597112 System and method for distributing liquid flow into predetermined proportions Oct. 6, 2009
7299822 Liquid level regulation apparatus Nov. 27, 2007
7202439 Small-hole electrical discharge machining device and multiple diesinking-and-small-hole electrical discharge machining device, and method for multiple diesinking-and-small-hole electrical disc Apr. 10, 2007
6997203 System and method for distributing liquid flow into predetermined proportions Feb. 14, 2006
6926022 Condensate removal system Aug. 9, 2005
6772789 Flow leveling device Aug. 10, 2004
6672571 Fuel removal system for a carburetor Jan. 6, 2004
6560985 Universal accumulator assembly May. 13, 2003
6216720 Siphon adapter Apr. 17, 2001
5971036 Filling and emptying of storage tanks containing aqueous dispersions Oct. 26, 1999
5727588 Depressurizing connector Mar. 17, 1998
5680989 Adjustable weir for liquid distribution systems Oct. 28, 1997
5546774 Pre-rinse dispenser Aug. 20, 1996
5518017 Fuel tank May. 21, 1996
5491983 Universal accumulator dehydrator connector assembly Feb. 20, 1996
5368058 Sample port valve Nov. 29, 1994
5337806 Method and device for heating or cooling a reaction flask Aug. 16, 1994
5303566 Front-loading washing machine drain system Apr. 19, 1994
5289900 Multi-functional service for lubrication tank Mar. 1, 1994
5223688 Fluid level adjusting apparatus in an electric discharge machining tank Jun. 29, 1993
5117867 Manifold for a differential pressure transmitter Jun. 2, 1992
5052437 Vent tube assembly Oct. 1, 1991
5004536 Water reclamation apparatus Apr. 2, 1991
4781894 Control mechanism for delivery of gas product at constant pressure Nov. 1, 1988
4756827 Liquid flow drainage control Jul. 12, 1988
4719771 Apparatus for applying liquids to yarns Jan. 19, 1988
4700734 Water collecting and spring box and gauging system and holding tank Oct. 20, 1987
4672690 Vacuum tank construction for self-contained sewage handling apparatus Jun. 16, 1987
4669914 Hydrologic discharge control assembly and method Jun. 2, 1987
4612951 Water-storage reservoir Sep. 23, 1986
4589368 Varnish coater for printed product May. 20, 1986
4461317 Overflow control valve Jul. 24, 1984
4428145 Shrimp bait container Jan. 31, 1984
4413914 Recovery of heavy hydrocarbons from oil sludge Nov. 8, 1983
4363621 Oil burner of type of pumping up fuel oil Dec. 14, 1982
4349267 Processing solution circulating device for film processor Sep. 14, 1982
4324479 Film processing method and apparatus Apr. 13, 1982
4298470 Sewage septic system with liquid flow drainage control Nov. 3, 1981
4290444 Flow control device for use with a battery formation tub Sep. 22, 1981
4285601 Drilling mud mixer Aug. 25, 1981
4261378 Accessory for parts washer Apr. 14, 1981
4257454 Drain plugs Mar. 24, 1981
4246927 Battery formation apparatus Jan. 27, 1981
4235677 Distillation flask and apparatus for producing high-purity water having overflow liquid trap means Nov. 25, 1980
4216792 Proportioner of liquids Aug. 12, 1980
4202406 Heat exchange system May. 13, 1980

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