Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/906
Name: Fluid handling > Valves biased by fluid "springs"
Description: Art collection drawn to valves biased by fluid "springs".










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8616228 Multi-stage ratio pressure regulator system Dec. 31, 2013
8307846 Pressure control valve Nov. 13, 2012
8220479 Multi-stage ratio pressure regulator system Jul. 17, 2012
8051812 Variable valve actuator with a pneumatic booster Nov. 8, 2011
8011380 Single component two-stage regulator Sep. 6, 2011
7938141 Single component two-stage regulator May. 10, 2011
7905247 Vacuum actuated valve for high capacity storage and delivery systems Mar. 15, 2011
7789657 Pressure regulator with bleed orifice Sep. 7, 2010
7748401 Gas pressure regulator and method for assembling and disassembling the regulator Jul. 6, 2010
7458390 Breath controlled air inlet for blower Dec. 2, 2008
7387659 Pneumatically operated automatic shutoff circuit for controlling the generation of gas Jun. 17, 2008
7370615 Variable valve actuator May. 13, 2008
7357150 Safety shut-off device Apr. 15, 2008
7290509 Variable valve actuator Nov. 6, 2007
7258133 Pressure reducing valve Aug. 21, 2007
7213549 Variable valve actuator May. 8, 2007
7156058 Variable valve actuator Jan. 2, 2007
7093605 Pressure control device for a pipeline Aug. 22, 2006
6978799 Emergency pressure relief valve with enhanced reset Dec. 27, 2005
6772791 Directly operated pneumatic valve having an air assist return Aug. 10, 2004
6675751 Two-mass bi-directional hydraulic damper Jan. 13, 2004
6601552 Hydraulically controllable globe valve Aug. 5, 2003
6589350 Vacuum processing chamber with controlled gas supply valve Jul. 8, 2003
6502803 Valve for controlling liquids Jan. 7, 2003
6494231 Valve device Dec. 17, 2002
6491007 Hydraulically controllable globe valve Dec. 10, 2002
6240956 Remote controlled drinker system Jun. 5, 2001
6161573 Air pressure regulator Dec. 19, 2000
6035889 Low cost absolute pressure controller for plenum pressure regulation Mar. 14, 2000
6019121 Pressure reducing valve Feb. 1, 2000
5954484 Sewage lifting station Sep. 21, 1999
5937895 Fail-safe delivery valve for pressurized tanks Aug. 17, 1999
5934318 Valve system Aug. 10, 1999
5819777 Flow control device Oct. 13, 1998
5819778 Flow control device of power steering system Oct. 13, 1998
5809950 Hydraulic valve control arrangement Sep. 22, 1998
5765515 Controllable hydraulic valve operating mechanism Jun. 16, 1998
5730182 Pressure compensation valve Mar. 24, 1998
5694975 Pressure regulator Dec. 9, 1997
5595148 Hydraulic valve control device Jan. 21, 1997
5549107 Second stage scuba diving regulator Aug. 27, 1996
5409040 Springless pilot operated sequence valve Apr. 25, 1995
5323807 Stop drop valve Jun. 28, 1994
5280804 Control valve Jan. 25, 1994
5271428 Adjustable differential pressure valve Dec. 21, 1993
5265645 Surge reliever relief valve Nov. 30, 1993
5253619 Hydraulically powered actuator with pneumatic spring and hydraulic latching Oct. 19, 1993
5253669 Controlling process gas flow Oct. 19, 1993
5193575 Adjustable differential pressure valve Mar. 16, 1993
5165493 Mud saver valve Nov. 24, 1992

1 2










 
 
  Recently Added Patents
Technique for skipping irrelevant portions of documents during streaming XPath evaluation
Personalized location information for mobile devices
Footwear
Error detection and recovery tool for logical volume management in a data storage system
Triple-trim reference voltage generator
Normalized contextual performance metric for the assessment of fatigue-related incidents
Method, device, and system for configuring component carrier in carrier aggregation scenario
  Randomly Featured Patents
Apparatus for manipulating a high density flat cable
Immobilization of membrane proteins onto supports via an amphiphile
Starter mechanism for an internal combustion engine
Wagering game with dual-play feature
Combination pursuit and compensatory display system
Portable electronic apparatus and communication method for protocol selection processing of a portable electronic apparatus
Water treatment system particularly for use in aquaculture
Optical scanner, and image reading apparatus and image forming apparatus using the same
Self-preparing electrode with removable plastic abrading brush
Apparatus for creating high density tire ricks