Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/315.21
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Assembling or disassembling rotary valve > Rotary ball valve > Particular valve seat or interface seal > Replaceable > With top entry valve
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
8656942 Length-adjustable pressure-retaining piping components Feb. 25, 2014
8365755 Ball valve isolator Feb. 5, 2013
6938876 Ball valve with retractable seals and method of replacement thereof Sep. 6, 2005
5954088 Ball valve adapted to couple with an output drive shaft of a valve control device Sep. 21, 1999
5551479 Combination ball and check valve Sep. 3, 1996
5531244 Hemispherical ball valve Jul. 2, 1996
5313976 Top entry ball valve and method of assembly May. 24, 1994
5251657 Top-entry check valve with cartridge secured by projections Oct. 12, 1993
5117858 Top entry ball valves with cam adjustable seats Jun. 2, 1992
4953587 Ball valves for pipelines Sep. 4, 1990
4867414 Ball valve Sep. 19, 1989
4641681 Clamp for use with top entry ball valve Feb. 10, 1987
4635675 Flat sided ball valve Jan. 13, 1987
4632140 Top entry ball valve Dec. 30, 1986
4601308 Ball valve with seat loading mechanism Jul. 22, 1986
4566482 Top entry trunnion ball valve Jan. 28, 1986
4390039 Valve assembly and disassembly device Jun. 28, 1983
4388945 Valve assembly and disassembly device Jun. 21, 1983
4342330 Ball type valve having improved redundant sealing system Aug. 3, 1982
4262691 Cam means for ball valve seat rings Apr. 21, 1981
4217923 Ball valve with readily removable ball and seats for high temperature environment Aug. 19, 1980











 
 
  Recently Added Patents
Method of controlling mechanical mechanisms of optical storage apparatus for peak power/current reduction, and related optical storage apparatus and machine-readable medium
Adaptive period network session reservation
Apparatus for generating electrical energy from rocking activated energy
Semiconductor device, semiconductor device design method, semiconductor design apparatus, and program
Efficient location discovery
System and method for redundant array copy removal in a pointer-free language
Snap-engagement structure
  Randomly Featured Patents
Regioselective synthesis
Non-absorbent substrates for the inhibition of exoprotein production from gram positive bacteria
Replacement gate process flow for highly scaled semiconductor devices
Directional detector of changes in a local electrostatic field
Fluorescent detection of proteins in polyacrylamide gels
Atmospheric cooling tower with dry-type heat exchangers
Circle drive arrangement for motor grader
Method of and device for performing bi-directional transmission using a single-wire
Facilitating power conservation in wireless client terminals
Decorative towel assembly