Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/637.5
Name: Fluid handling > Systems > Valves with separate, correlated, actuators > Coaxial stems > Rotary > Concentric, central valve removable
Description: Subject matter in which a rotary plug valve is within an outer concentric, separately actuated, rotary plug valve and so constructed that the central valve may be removed for repair or other purposes without disturbing the outer valve.










Patents under this class:

Patent Number Title Of Patent Date Issued
7143787 Microluidic valve having two revolving valve elements Dec. 5, 2006
6883541 Manual-automatic water faucet Apr. 26, 2005
4397329 Mixing valve Aug. 9, 1983
4306582 Mixing valve Dec. 22, 1981
4187872 Control valve assembly Feb. 12, 1980
3967535 Uniflow steam engine Jul. 6, 1976











 
 
  Recently Added Patents
Administrable compositions
Gas flow indicator
Arbitration circuit to arbitrate conflict between read/write command and scan command and display driver integrated circuit having the same
Coreference resolution in an ambiguity-sensitive natural language processing system
Spoofing detection for civilian GNSS signals
Electronic control apparatus
Wall flow type exhaust gas purification filter
  Randomly Featured Patents
Electron beam direct printing apparatus
Particle detector
Desk or the like with wire management
Cable and crimp for bone surgery
Column selection circuit of semiconductor memory with transfer gate
Semiconductor device, its manufacturing method, and sputtering target material for use in the method
Xerographic photoreceptor primarily formed by the hydrogenated amorphous silicon material and the method for manufacturing the same
Magnetic field analysis method and programs for rotating machines
Projecting patterns for high resolution texture extraction
Immersion lithography fluid control system using an electric or magnetic field generator