Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/246.12
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Liquid supplied at valve interface > Line pressure feed
Description: Valves wherein line pressure is used to feed the sealing liquid.

Patents under this class:

Patent Number Title Of Patent Date Issued
7857004 Automated condensate drain line cleaning system, method, and kit Dec. 28, 2010
5901737 Rotary valve having a fluid bearing May. 11, 1999
4971098 Valve and improved seat seal therefor Nov. 20, 1990
4702269 By-pass valve Oct. 27, 1987
4450854 Lubricated split plug valve May. 29, 1984
4398559 Valve member and assembly with inlet and outlet pressure relief grooves Aug. 16, 1983
4393893 Lubricated split plug valve Jul. 19, 1983
4372338 High pressure valve assembly Feb. 8, 1983
4363465 Extreme temperature, high pressure balanced, rising stem gate valve with super preloaded, stacked, solid lubricated, metal-to-metal seal Dec. 14, 1982
4350179 Valve assembly with relief groove Sep. 21, 1982
4262689 Respirator valve Apr. 21, 1981
4197924 Ball valve lubricating apparatus Apr. 15, 1980
4029294 High pressure valve Jun. 14, 1977

  Recently Added Patents
Systems and methods for archiving and retrieving navigation points in a voice command platform
Alkaline battery
High conductive water-based silver ink
Color image forming apparatus with contact control of process units
Use of cocoa extract
Wearable display device
System and method for associating financial transaction data with a user's project data using a portable electronic device
  Randomly Featured Patents
Ultrasonic delay line mounted in a frame-like body having a wiring pattern thereon
Video display apparatus and method for controlling the switching of external input terminals thereof
Enhanced stress transfer in an interlayer dielectric by using an additional stress layer above a dual stress liner in a semiconductor device
Laser marking device
Compact antenna array for diversity applications
Inter-working between network address type (ANAT) endpoints and interactive connectivity establishment (ICE) endpoints
Phosphocholinate cardenolides
Reactive dyes containing a 2,6-difluoro-3,5-dichloropyridine group
Heat-curable silicone compositions having improved bath life
Image-forming material