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Class Information
Number: 137/527.6
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Pivoted valves > Valve mounted on end of pipe
Description: Devices which provide means for mounting the valve on the end of a pipe.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8567435 Centreline flow valve Oct. 29, 2013
8561642 Check valve for transport and storage containers for fluids Oct. 22, 2013
8459298 Check valve for drain pipes Jun. 11, 2013
8006406 Drying system Aug. 30, 2011
7798235 Safety valve torsional spring assembly and method Sep. 21, 2010
7585164 Backflow preventing apparatus for compressor Sep. 8, 2009
7581572 Fuel saving valve assembly Sep. 1, 2009
7568499 Fuel check valve Aug. 4, 2009
7458385 Flapper type fill tube check valve Dec. 2, 2008
7426979 Exhaust gas control valve Sep. 23, 2008
7240378 Flange valve Jul. 10, 2007
7147001 Fuel-transfer system Dec. 12, 2006
6932100 Flapper type fill tube check valve Aug. 23, 2005
6901954 Safety relief valve Jun. 7, 2005
6834678 Pump valve Dec. 28, 2004
6792973 Gas tight shut off valve for a material charging or discharging lock Sep. 21, 2004
6736160 Valve structure for engine exhaust system May. 18, 2004
6637449 Pressure sensible valve for exhaust muffler and method of assembling same Oct. 28, 2003
6581721 Valve for a control muffler Jun. 24, 2003
6527006 Exhaust valve assembly Mar. 4, 2003
6474365 Overflow drain outlet cover system Nov. 5, 2002
6264452 Reinforcement pin for check valve Jul. 24, 2001
6240957 Backward flow prevention valve Jun. 5, 2001
6234195 Check valve for fuel tank fill pipe May. 22, 2001
6109297 Directional drain valve Aug. 29, 2000
6089261 Drain valve with counterweight Jul. 18, 2000
6050284 RV generator auxiliary exhaust system method Apr. 18, 2000
5921862 Air flow reversal prevention door assembly Jul. 13, 1999
5918858 Undulating transverse interface for curved flapper seal Jul. 6, 1999
5909748 Pressure relief valve Jun. 8, 1999
5887615 Check valve of fuel tank Mar. 30, 1999
5839473 RV generator auxiliary exhaust system and method Nov. 24, 1998
5799578 Printing press and liquid supply Sep. 1, 1998
5775357 Fuel fill valve and vent valve assembly Jul. 7, 1998
5740834 Reverse angle integrally counter-weighted trickle valve Apr. 21, 1998
5709241 Butterfly valve Jan. 20, 1998
5685335 Lamp processing machine Nov. 11, 1997
5682921 Undulating transverse interface for curved flapper seal Nov. 4, 1997
5428907 Downcomer and flapper valve Jul. 4, 1995
5397314 Surgical cannula with ball valve Mar. 14, 1995
5398314 Apparatus for creating operation data concerning operating device Mar. 14, 1995
5327933 Check valve of fuel tank Jul. 12, 1994
5301475 Fire stop device Apr. 12, 1994
5215117 Double-check filler valve Jun. 1, 1993
5193578 Irrigation line drain valve Mar. 16, 1993
5046408 Hooded exhaust vent Sep. 10, 1991
5044396 Check valve for fluids Sep. 3, 1991
5031659 Sewer line relief valve Jul. 16, 1991
5004010 Hose rupture valve Apr. 2, 1991
4996028 Trickle valve Feb. 26, 1991

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