Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/523
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > With external means for opposing bias > With means for retaining external means in bias opposing position
Description: Valves provided with means for maintaining the bias relieving or valve opening means in the bias relieving or valve opening position.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8578964 Bleeding screw having a kick-back valve Nov. 12, 2013
8561640 Latching check valve Oct. 22, 2013
8376737 Hot air blower Feb. 19, 2013
8281806 Check valve Oct. 9, 2012
8205641 Hydraulic apparatus having an axially actuatable bypass valve Jun. 26, 2012
8082941 Reverse action flow activated shut-off valve Dec. 27, 2011
7913714 Check valve and shut-off reset device for liquid delivery systems Mar. 29, 2011
7895993 Internal combustion engine having exhaust gas recirculation Mar. 1, 2011
7814983 Dry pipe valve for fire protection sprinkler system Oct. 19, 2010
7775503 Pressure relief valve Aug. 17, 2010
7691088 Vascular access device Apr. 6, 2010
7533691 Adjustable damper assembly May. 19, 2009
7325569 Butterfly valve with integral split flapper relief valve Feb. 5, 2008
7320456 Valve device Jan. 22, 2008
7290561 Pulsation causing valve for a plural piston pump Nov. 6, 2007
7278443 Pulsation causing valve for a plural piston pump Oct. 9, 2007
7273065 Inflation/deflation valve for cargo dunnage Sep. 25, 2007
7195029 Inflate and deflate valve Mar. 27, 2007
7104333 Dry pipe valve for fire protection sprinkler system Sep. 12, 2006
6941602 Self adjusting, contouring cushioning system Sep. 13, 2005
6626204 Cylinder valve assembly with check valve Sep. 30, 2003
6568424 Method and valve for preventing unauthorized access May. 27, 2003
6357465 Shipping cap for evacuation valve Mar. 19, 2002
6341622 Pressure relief valve and arrangement for fire suppression water sprinkler system Jan. 29, 2002
6164314 Oversized air valve for use with inflatable devices and method Dec. 26, 2000
6027315 Inlet control valve for compressors Feb. 22, 2000
5988245 Vehicle wheel assemblies including protection against excessive tire pressure Nov. 23, 1999
5918623 Starting valve Jul. 6, 1999
5819791 Check valve including means to permit selective back flow Oct. 13, 1998
5729991 Pressure relief system for a refrigeration system Mar. 24, 1998
5662139 Pressure relief valve with lockout position Sep. 2, 1997
5568910 Anesthesia machine Oct. 29, 1996
5511575 Apparatus for permitting uninterrupted relief of cargo tank compartment internal pressure and preventing leakage of lading from the cargo tank during dynamic pressure surges Apr. 30, 1996
5479978 Pressure-vacuum relief valve assembly Jan. 2, 1996
5398744 Tire pressure regulating apparatus Mar. 21, 1995
5396925 Anti-free flow valve, enabling fluid flow as a function of pressure and selectively opened to enable free flow Mar. 14, 1995
5343889 Nozzle for inflatable objects Sep. 6, 1994
5338160 Individual controllable cylinder-plunger assemblies of a radial piston pump Aug. 16, 1994
5331998 Radial valve with unloader assembly for gas compressor Jul. 26, 1994
5254092 Fluid flow check valve Oct. 19, 1993
5215119 Safety closure for steam pressure coffee machine water reservoirs Jun. 1, 1993
5178240 Adjustable double-acting damper Jan. 12, 1993
5163741 Device for hydraulic brake lock valve with a closing piston Nov. 17, 1992
5119842 Nozzle for inflatable objects Jun. 9, 1992
5105848 Automatic relief valve Apr. 21, 1992
4948092 Combined check valve and fluid pressure relief valve Aug. 14, 1990
4899782 Steam pressure cooker Feb. 13, 1990
4889623 Brining system Dec. 26, 1989
4834282 Device for use with flue dampers May. 30, 1989
4825945 Wellhead valve May. 2, 1989

1 2










 
 
  Recently Added Patents
Method for controlled layer transfer
Treatment of cancer using the sodium salt of a benzoic acid derivative
Switching device, switch control method, and storage system
Sports helmet
Method and apparatus for using service capability information for user plane location
Distributed IPv6 neighbor discovery for large datacenter switching systems
Motor drive component verification system and method
  Randomly Featured Patents
Low profile semiconductor package
Photosensitizer and photovoltaic device
Illumination energy management in surface inspection
Aluminum powder alloy product for high temperature application
In-line compounding and extrusion system
Wire temperature controller
Method and apparatus for water harvesting
Non-contact hot fusing toner
Method and apparatus for protecting a friction brake disc
Combination of global clock and localized clocks