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Class Information
Number: 137/388
Name: Fluid handling > Liquid level responsive or maintaining systems > Liquid excluding devices for gas inlet or outlets
Description: Apparatus wherein a liquid level responsive device is provided to exclude an external liquid from a gas inlet or outlet such as a shipboard ventilator.










Patents under this class:

Patent Number Title Of Patent Date Issued
8057665 Cold water tank and water treatment apparatus having the same Nov. 15, 2011
7866334 Sewer pipe gas exhaust filter apparatus Jan. 11, 2011
7309470 Methods and apparatus for improved fluid control utilizing a U-valve employing a bidirectional check valve Dec. 18, 2007
6907898 Fluid shutoff apparatus Jun. 21, 2005
6848465 Dual-action vent check valve Feb. 1, 2005
6846461 Methods and apparatus for improved fluid control utilizing a U-valve employing a flow-interruption device Jan. 25, 2005
6254835 Methods and apparatus for improved fluid control utilizing a u-valve employing a bidirectional check valve Jul. 3, 2001
6213146 Valve assembly for preventing liquid ingestion and methods Apr. 10, 2001
6209559 Valve assembly for preventing liquid ingestion and methods Apr. 3, 2001
6009898 Valve assembly for preventing liquid ingestion and methods Jan. 4, 2000
5711339 Fuel outflow preventing valve device Jan. 27, 1998
5613513 Liquid flow control device Mar. 25, 1997
4059127 Self-cleaning non-return drainage valve Nov. 22, 1977











 
 
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