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Class Information
Number: 137/541
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve > Spring in inlet
Description: Valves in which the spring is located on the side of the valve which is exposed to the fluid pressure to which the valve is to be responsive, i.e., the spring and valve are on opposite sides of the valve seat and the spring is in the fluid conduit or container.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8534326 Metering pump assembly Sep. 17, 2013
8393156 Variable performance valve of a fuel nozzle for a turbine engine Mar. 12, 2013
8360105 Air admittance vent Jan. 29, 2013
8205630 Low pressure relief valve and method of manufacturing same Jun. 26, 2012
7959045 Spout assembly and method of manufacturing packaging bag provided with spout assembly Jun. 14, 2011
7891374 Suction valve Feb. 22, 2011
7658405 Apparatus and method for providing extended inflator output Feb. 9, 2010
7195029 Inflate and deflate valve Mar. 27, 2007
7174910 Valve core Feb. 13, 2007
7128088 Backflow preventer Oct. 31, 2006
7066201 Valve device having solid engaging structure Jun. 27, 2006
7036523 Serviceable check valve May. 2, 2006
6994108 Check valve for fuel pump Feb. 7, 2006
6929023 Back flow prevention device for pipelines conveying fluids Aug. 16, 2005
6923202 Modular pressure relief valve Aug. 2, 2005
6904933 Enclosure for outdoor equipment Jun. 14, 2005
6892757 Hydraulic valve May. 17, 2005
6877525 Check valve for fuel pump Apr. 12, 2005
6835053 Check valve Dec. 28, 2004
6830064 Leak control valve Dec. 14, 2004
6736162 Pressure relief valve with improved repairability May. 18, 2004
6695007 Suction valve Feb. 24, 2004
6581633 Check valve and method of fabrication Jun. 24, 2003
6513556 Flexible hose passive shut down system Feb. 4, 2003
6497248 Pressure relief device with one piece gasket Dec. 24, 2002
6470911 Check valve and fuel tank with check valve attached thereto Oct. 29, 2002
6367501 Anti-geyser shut-off valve assembly Apr. 9, 2002
6328883 Fuel filter assembly with priming pump Dec. 11, 2001
6257503 Dispenser head and receptacle fitted therewith Jul. 10, 2001
6224350 Radial piston pump for high-pressure fuel delivery May. 1, 2001
6187182 Filter cartridge assembly for a gas purging system Feb. 13, 2001
6183224 Airless paint sprayer intake dampener Feb. 6, 2001
6098623 Pressure-limiting valve wherein valve plate oscillations are prevented Aug. 8, 2000
6050295 High flow valved fitting Apr. 18, 2000
5979408 Fuel injection system Nov. 9, 1999
5975061 Bypass fuel pressure regulator Nov. 2, 1999
5971016 Super high flow pressure relief valve Oct. 26, 1999
5947784 Apparatus for producing toroidal bubbles and method Sep. 7, 1999
5919033 Pump having relief valve seat free of direct structural restraint Jul. 6, 1999
5688113 Piston for a piston pump with a two part inlet valve body Nov. 18, 1997
5662140 Internally mounted high pressure hydraulic valve for vehicularly mounted water receiving tanks Sep. 2, 1997
5639219 Airless paint sprayer intake dampener and inlet valve spring Jun. 17, 1997
5617893 Vacuum relief valve Apr. 8, 1997
5588817 Pressure-medium-traversed piston of a reciprocating piston pump Dec. 31, 1996
5544673 Method and arrangement for assembling fuel injection nozzles Aug. 13, 1996
5472013 Fuel injection nozzle Dec. 5, 1995
5465752 Multi-function valve for a riser in a sprinkler system Nov. 14, 1995
5443092 Fluid flow valve device and assemblies containing it Aug. 22, 1995
5356270 Ultra high vacuum cryopump relief valve assembly Oct. 18, 1994
5240040 Mixing valve Aug. 31, 1993

1 2 3










 
 
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