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Class Information
Number: 137/506
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > Plural valves biased closed
Description: Apparatus which include a plurality of biased closed valves responsive to variations in fluid condition, at least one of which utilizes a separate connected reactor surface.










Patents under this class:

Patent Number Title Of Patent Date Issued
8550112 Multifunctional safety valve device with incorporated proportional pressure regulator Oct. 8, 2013
8443826 Demand valve for gas mixing May. 21, 2013
8177737 Drainage system for treating hydrocephalus May. 15, 2012
7506662 One-way fluid valve Mar. 24, 2009
7118088 Fluid control valve Oct. 10, 2006
6622743 Surge prevention device Sep. 23, 2003
6325088 Buckling pin actuated, pilot operated pressure relief valve Dec. 4, 2001
6237623 Nonsurgical intraurethral bladder control device May. 29, 2001
5491976 Vehicle emission air injection Feb. 20, 1996
5301504 Combination valve Apr. 12, 1994
5249593 Fluid pressure relief system for pressure vessels Oct. 5, 1993
4889154 Automatic shut-off valve Dec. 26, 1989
4699171 Multiple port relief valve Oct. 13, 1987
4648421 Valve device for controlling liquid flow Mar. 10, 1987
4630642 Check valve and water injection systems and fuel systems utilizing the same Dec. 23, 1986
4566635 Fuel injection nozzle for internal combustion engines Jan. 28, 1986
4370102 Fluid pumping device Jan. 25, 1983
4346734 Locking device Aug. 31, 1982
4235211 Fuel pressure regulator Nov. 25, 1980
4193418 Arrangement for preventing excess pressure in the housing of shut-off valves Mar. 18, 1980
3993361 Pressure protection valve and system Nov. 23, 1976
3976099 Multiple-passage, quick-disconnect coupling Aug. 24, 1976











 
 
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