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Class Information
Number: 137/511
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type)
Description: Valves which are responsive to pressure of the line fluid on the face of the valve disc or plug itself.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8622081 |
Fluid flow control valve |
Jan. 7, 2014 |
| 8607746 |
Cooling system expansion tank |
Dec. 17, 2013 |
| 8596560 |
Check valve |
Dec. 3, 2013 |
| 8591634 |
Method and equipment for selectively collecting process effluent |
Nov. 26, 2013 |
| 8592063 |
Battery pack pressure valve |
Nov. 26, 2013 |
| 8581151 |
Steam oven water delivery and drain valve systems and methods |
Nov. 12, 2013 |
| 8544493 |
Water hammer proof and silent check valve |
Oct. 1, 2013 |
| 8528591 |
Micro valve, method for producing a micro valve, as well as micro pump |
Sep. 10, 2013 |
| 8517703 |
Compressor including valve assembly |
Aug. 27, 2013 |
| 8512482 |
Device for blocking fluid passage through a tubular part by means of a check valve, particularly in a household appliance |
Aug. 20, 2013 |
| 8496738 |
Nitrogen and oxygen separation using vacuum swing adsorption |
Jul. 30, 2013 |
| 8444401 |
Check valve and piston pump having check valve |
May. 21, 2013 |
| 8408244 |
Sanitary installation part |
Apr. 2, 2013 |
| 8373539 |
Gas cutoff apparatus |
Feb. 12, 2013 |
| 8333852 |
Method for conditioning process gases for the heat treatment of metallic work pieces in industrial furnaces |
Dec. 18, 2012 |
| 8323573 |
Microfluidic cartridge with solution reservoir-pump chamber |
Dec. 4, 2012 |
| 8316900 |
Fluid receiver having removable sleeve |
Nov. 27, 2012 |
| 8309039 |
Valve structure for consistent valve operation of a miniaturized fluid delivery and analysis system |
Nov. 13, 2012 |
| 8282789 |
Microwave apparatus and method of extracting essential oils, essence, and pigments with gas flow |
Oct. 9, 2012 |
| 8282788 |
Extraction apparatus and method of extracting essential oils, essence, and pigments from odorous raw material by microwave heating under sub-critical conditions |
Oct. 9, 2012 |
| 8205765 |
Gas absorption reservoir with optimized cooling |
Jun. 26, 2012 |
| 8029939 |
Fuel cell ejector with integrated check valve |
Oct. 4, 2011 |
| 7997276 |
Respiration pillow |
Aug. 16, 2011 |
| 7950361 |
Valve timing control apparatus |
May. 31, 2011 |
| 7828146 |
Inflatable containers |
Nov. 9, 2010 |
| 7491321 |
Oxidation tank control valve assembly and systems and methods for replenishing a charge of oxygen-containing gas within an oxidation tank |
Feb. 17, 2009 |
| 7461515 |
Sequential hot gas defrost method and apparatus |
Dec. 9, 2008 |
| 7406954 |
Fuel pump check valve |
Aug. 5, 2008 |
| 7334603 |
Check valve |
Feb. 26, 2008 |
| 7104472 |
Constant velocity turbine and stator assemblies |
Sep. 12, 2006 |
| 7040320 |
Valve device for controlled supply of a pressure fluid |
May. 9, 2006 |
| 6955755 |
Liquid filter comprising a valve arranged in a support tube of a filter element |
Oct. 18, 2005 |
| 6921030 |
Constant velocity turbine and stator assemblies |
Jul. 26, 2005 |
| 6779554 |
Return check valve |
Aug. 24, 2004 |
| 6742995 |
Air compressor assembly |
Jun. 1, 2004 |
| 6481464 |
Check valve |
Nov. 19, 2002 |
| 6264290 |
Single-operation valve assembly for braking systems and the like |
Jul. 24, 2001 |
| 6129714 |
Medical drainage means |
Oct. 10, 2000 |
| 6039074 |
Pressure-induced shut-off valve for a liquid delivery system |
Mar. 21, 2000 |
| 5837204 |
System for disinfecting the water lines of a dental unit |
Nov. 17, 1998 |
| 5819793 |
Breather valve |
Oct. 13, 1998 |
| 5693219 |
Apparatus for backwashing a water filter |
Dec. 2, 1997 |
| 5669410 |
Air flow rate regulation apparatus for air pump |
Sep. 23, 1997 |
| 5623974 |
Spray product and pump to supply air under pressure to the dispenser |
Apr. 29, 1997 |
| 5558121 |
Fluid actuated ball check valve assembly |
Sep. 24, 1996 |
| 5501242 |
Pressure relief valve |
Mar. 26, 1996 |
| 4929229 |
Breastpump having improved valve mechanism |
May. 29, 1990 |
| 4528999 |
Pressure relief device for pipes |
Jul. 16, 1985 |
| 4401224 |
Feeding bottle for infants |
Aug. 30, 1983 |
| 4271862 |
Check valve and method of manufacturing said check valve |
Jun. 9, 1981 |
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