Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/247.17
Name: Fluid handling > With liquid valves or liquid trap seals > Liquid seal in liquid flow line; flow liquid forms seal > Valves > Line condition change responsive > Plural valves or valve seats
Description: Apparatus having a plurality of line condition responsive valves or having such a valve which seats alternatively on one of a plurality of seats.

Patents under this class:

Patent Number Title Of Patent Date Issued
7735805 Water control valve Jun. 15, 2010
6689007 Manual valve for automatic transmission Feb. 10, 2004
6273639 Method and apparatus for facilitating migration of fish past dams and other barriers in waterways Aug. 14, 2001
5743884 Sealing structure for medical instrument Apr. 28, 1998
4749658 Two-way valve for blood analyzing apparatus Jun. 7, 1988
4459983 Breathing apparatus for reanimation of newborns Jul. 17, 1984
4046161 Non-return valve for preventing back flow of waste waters Sep. 6, 1977

  Recently Added Patents
Method of fabricating display device
Transmitter having a programmable amplifier operating class
Signal generator
String changing tool with a quick connector assembly and worm gear string cutter
Solid-state image capture device and image capture apparatus
Management of memory array with magnetic random access memory (MRAM)
  Randomly Featured Patents
Wall security fixtures
Wireless communication system, radio base station apparatus and radio terminal apparatus
Control of stirling cooler displacement by pulse width modulation of drive motor voltage
Multi-function printer
Air-intake system for mobile engines
Well treating method and system for stimulating recovery of fluids
Nacreous pigment and method for the manufacture thereof
Handling device for coins, tokens and the like
Ink ribbon cassette for an electronic computer