Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/493.5
Name: Fluid handling > Line condition change responsive valves > Bi-directional flow valves > One head and seat carried by head of another > Supporting valve spring carried by supporting valve > Spring abuts guide for supported valve stem
Description: Apparatus wherein the spring of the carried valve abuts the guide for the stem of the carried valve.

Patents under this class:

Patent Number Title Of Patent Date Issued
8561637 Vent valve Oct. 22, 2013
8469051 Valve for limiting the tank pressure in a motor vehicle Jun. 25, 2013
7665579 Flow control valve having pressure compensating valve Feb. 23, 2010
7451780 Multifunction valve for use in a hydraulic component Nov. 18, 2008
7320334 Valve Assembly Jan. 22, 2008
7066199 Valve assembly Jun. 27, 2006
6619497 Apparatus for venting a container containing fluid Sep. 16, 2003
6305412 Double acting pressure relief valve with low pressure seal Oct. 23, 2001
6196258 Pressure control valve and evaporation fuel discharge control device Mar. 6, 2001
6056029 Fuel-Transfer system May. 2, 2000
4561559 Fuel tank venting valve Dec. 31, 1985
4459086 Fuel injection pump for internal combustion engines Jul. 10, 1984
4300591 Anti-cavitation and overload relief valve for a hydraulic system Nov. 17, 1981
4270567 Control valve for use in hydraulic apparatus Jun. 2, 1981
4210170 Anti-cavitation and overload relief valve for a hydraulic system Jul. 1, 1980
4016903 Pilot operated pressure and vacuum relief valve Apr. 12, 1977
3939866 Fuel saving device Feb. 24, 1976

  Recently Added Patents
Smooth silicon-containing films
Clamp for fence panels
Process for preventing polymerization of cracked volatile products during pyrolysis and gasification
Method and apparatus for managing communication services for user endpoint devices
Semiconductor device
Tool bag with removable tool wall
Method and system to generate finite state grammars using sample phrases
  Randomly Featured Patents
Routing and wavelength assignment in optical networks
Stabilizing arrangement for a sewing machine cam post
Cyclohexenemethanols and their lower esters in perfume compositions
Multi-unit air conditioner and method for controlling the same
Metallic sheath heater with improved electrical connection between coil and sheath and method of manufacture thereof
Compositions and method for enhancing electrical life of polymers used in xerographic devices
Method for controlling the oxidation of implanted silicon
Relay drive circuit
Reset for threaded enclosure
Light channelling window panel for shading and illuminating rooms