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Class Information
Number: 137/542
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve > Valve stem extends through fixed spring abutment
Description: Valves in which the valve has a stem which passes through the biasing spring, which is mounted between abutments one of which is fixed and comprises a guide for the stem and the other of which is carried by or comprised in the valve head and/or stem.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8667982 |
Air valve device for an inflatable article |
Mar. 11, 2014 |
| 8640271 |
Cartridge unit and trap for sewer gas and odor containment |
Feb. 4, 2014 |
| 8561703 |
Compliant dart-style reverse-flow check valve |
Oct. 22, 2013 |
| 8544497 |
Fluid transfer device and system |
Oct. 1, 2013 |
| 8517051 |
Automatic flow control regulator valve |
Aug. 27, 2013 |
| 8490720 |
Self aligning mud saver valve seat |
Jul. 23, 2013 |
| 8408244 |
Sanitary installation part |
Apr. 2, 2013 |
| 8381764 |
Check valve |
Feb. 26, 2013 |
| 8356587 |
PCV valve guide |
Jan. 22, 2013 |
| 8307848 |
Freeze resistant manifold assembly and system |
Nov. 13, 2012 |
| 8230875 |
Check valve |
Jul. 31, 2012 |
| 8152909 |
Gas chromatography check valve and system |
Apr. 10, 2012 |
| 8147225 |
Pump valve having a limiting element |
Apr. 3, 2012 |
| 8061382 |
Sanitary valve assembly |
Nov. 22, 2011 |
| 7946290 |
Underwater exhaust system and method |
May. 24, 2011 |
| 7891374 |
Suction valve |
Feb. 22, 2011 |
| 7850149 |
Pressure blast pre-filming spray nozzle |
Dec. 14, 2010 |
| 7726335 |
Check valve apparatus for fuel delivery systems |
Jun. 1, 2010 |
| 7721757 |
Discharge check valve assembly for use with hermetic scroll compressor |
May. 25, 2010 |
| 7673651 |
Flow regulating device |
Mar. 9, 2010 |
| 7654509 |
Desuperheater spray nozzle |
Feb. 2, 2010 |
| 7469712 |
Relief valve |
Dec. 30, 2008 |
| 7431048 |
Backflow preventer |
Oct. 7, 2008 |
| 7426932 |
Spray fill device and method for using the same |
Sep. 23, 2008 |
| 7401619 |
Air valve device for an inflatable article |
Jul. 22, 2008 |
| 7389791 |
Backflow preventer |
Jun. 24, 2008 |
| 7367354 |
Check valve |
May. 6, 2008 |
| 7300482 |
Particle separation apparatus |
Nov. 27, 2007 |
| 7290559 |
Check valve for a high-pressure pump of a fuel injection system for an internal combustion engine |
Nov. 6, 2007 |
| 7172175 |
Suction valve |
Feb. 6, 2007 |
| 7143784 |
Sanitary fitting |
Dec. 5, 2006 |
| 7128088 |
Backflow preventer |
Oct. 31, 2006 |
| 7074020 |
Sanitary pump and sanitary valve |
Jul. 11, 2006 |
| 7028994 |
Pressure blast pre-filming spray nozzle |
Apr. 18, 2006 |
| 7004195 |
Discharge valve |
Feb. 28, 2006 |
| 6994108 |
Check valve for fuel pump |
Feb. 7, 2006 |
| 6968858 |
Check valve |
Nov. 29, 2005 |
| 6899312 |
Pressure relief valve for flowing media |
May. 31, 2005 |
| 6877525 |
Check valve for fuel pump |
Apr. 12, 2005 |
| 6868860 |
Fire hydrant with second valve |
Mar. 22, 2005 |
| 6866062 |
Check valve |
Mar. 15, 2005 |
| 6837267 |
Cartridge insert for a fluid line |
Jan. 4, 2005 |
| 6755629 |
Fuel injection pump having one-way valve for supplying fuel into pressurizing chamber |
Jun. 29, 2004 |
| 6746001 |
Desuperheater nozzle |
Jun. 8, 2004 |
| 6736162 |
Pressure relief valve with improved repairability |
May. 18, 2004 |
| 6719544 |
Valve for scroll compressor |
Apr. 13, 2004 |
| 6698450 |
Discharge valve |
Mar. 2, 2004 |
| 6668853 |
Pressure relief valve with field-replaceable high corrosion-resistant components |
Dec. 30, 2003 |
| 6613096 |
Prosthetic pressure relief valve system |
Sep. 2, 2003 |
| 6581633 |
Check valve and method of fabrication |
Jun. 24, 2003 |
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