Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/543.15
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve > Head slides on guide-rod concentric with spring
Description: Valves wherein the head slides on a guide-rod which is concentric with the spring.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8627932 Bypass for a suspension damper Jan. 14, 2014
8584700 Discharge valve Nov. 19, 2013
8485221 Flush valve handle and check valve assembly Jul. 16, 2013
8171955 Emergency relief vent for fuel storage tanks May. 8, 2012
8152909 Gas chromatography check valve and system Apr. 10, 2012
7980266 Soffit vent Jul. 19, 2011
7591283 Low rise rate direct acting relief valve Sep. 22, 2009
7464723 Non-return valve Dec. 16, 2008
7182171 Muffler with variable acoustic properties Feb. 27, 2007
7121267 Poppet for an integrated pressure management apparatus and fuel system and method of minimizing resonance Oct. 17, 2006
7107780 Vacuum-breaking valve for a refrigerated compartment Sep. 19, 2006
7066722 Discharge valve for compressor Jun. 27, 2006
6997208 Valve suitable for use in an oil circuit of an internal combustion engine Feb. 14, 2006
6964280 Valve assembly for use in a hydraulic component Nov. 15, 2005
6719544 Valve for scroll compressor Apr. 13, 2004
6615774 Adjustable pressure actuated fuel/air diaphragm valve assembly Sep. 9, 2003
6561143 Engine induction valve with reduced backflow May. 13, 2003
6514232 Vacuum adjustment valve, particularly for thoracic drainage devices Feb. 4, 2003
6488049 Super sensitive, full flow, adjustable pressure valve Dec. 3, 2002
6427711 Inline check valve Aug. 6, 2002
6336797 Oiless rotary scroll air compressor air inlet valve Jan. 8, 2002
6163895 Plunger apparatus Dec. 26, 2000
5979584 Four-wheel drive transfer case controller Nov. 9, 1999
5979548 Heat exchanger having heat exchange tubes with angled heat-exchange performance-improving indentations Nov. 9, 1999
5832954 Check valve assembly for inhibiting Helmholtz resonance Nov. 10, 1998
5816291 Shock absorber for liquid conduits Oct. 6, 1998
5704390 Automatic variable demand flow regulator Jan. 6, 1998
5636659 Variable area compensation valve Jun. 10, 1997
5618057 Continuously variable controlled orifice inflator Apr. 8, 1997
5609359 Pintle controlled orifice inflator Mar. 11, 1997
5601112 Check valve Feb. 11, 1997
5427506 Compressor pressure relief assembly Jun. 27, 1995
5323807 Stop drop valve Jun. 28, 1994
5289847 Plate-type valve for a pressured-fluid machine, and a valving plate assembly therefor Mar. 1, 1994
5207242 Angle dual check valve May. 4, 1993
5129419 Pressure control valve Jul. 14, 1992
5080130 Gas compressor head and discharge valve construction Jan. 14, 1992
5080122 Non-return valve Jan. 14, 1992
5060685 Safety cap for tire valve Oct. 29, 1991
4915129 Check valve Apr. 10, 1990
4911196 Inline check valve Mar. 27, 1990
4905656 Emission control valve with internal spring Mar. 6, 1990
4886033 Stabilized flow control valve Dec. 12, 1989
4834223 Valve structure for telescopic hydraulic damper May. 30, 1989
4744444 Shock absorber May. 17, 1988
4685489 Valve assembly and compressor modulation apparatus Aug. 11, 1987
4683599 Automatic pool cleaner fitting Aug. 4, 1987
4632141 Valve arrangement Dec. 30, 1986
4525183 Valves for desiccant dryers Jun. 25, 1985
4520842 High pressure valve for positive pressure pumps including means for installing and removing the valve Jun. 4, 1985

1 2










 
 
  Recently Added Patents
Systems and methods for updating a data store using a transaction store
Security patch update processor
Manufacturing process for cellular screening substratum, resultant substratum, and method and apparatus for screening
Encoder that optically detects positional information of a moving body from different optical paths lengths
Utilizing virtually stored media snapshots for rasterizing print jobs
Method and apparatus for monitoring and/or controlling the curing of cements used in medical procedures
Method and apparatus for filter-less class D audio amplifier EMI reduction
  Randomly Featured Patents
Process for retaining moisture in cooked food with a peptide
Combined fat and oil separator and stand therefor
Two-dimensional ion trap with ramped axial potentials
Method and apparatus for providing adaptive multiple resolution of optical imagers
Energy means for internal combustion engines
Total ossicular replacement prosthesis
Methods for genotyping with selective adaptor ligation
Display stand
Low latency, high throughput data storage system
Method and apparatus for waste water treatment