Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/858
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Resilient material valve > With valve member flexing about securement > Flap or reed > With weight
Description: Valve which, in addition to the restoring force of the resilient material is provided with a mass of material which due to the force of gravity acts to bias the resilient member towards its valve seat.

Patents under this class:

Patent Number Title Of Patent Date Issued
7556559 Control and pressure release valve Jul. 7, 2009
6592346 Compressor discharge valve Jul. 15, 2003
6468148 Exhaust ventilator Oct. 22, 2002
5848615 Check valve cartridge for fluid pump Dec. 15, 1998
5500663 Recording ink container with an air vent valve Mar. 19, 1996
5364244 Pump arrangement including flag type inlet valves with spherical seating Nov. 15, 1994
5355910 Dual component flap Oct. 18, 1994
5285816 One way valve Feb. 15, 1994
4702274 Quick disconnect for sewage system Oct. 27, 1987

  Recently Added Patents
Method for generating codewords
Method and CTDevice for computer tomographic spiral scanning of a patient
Optimized control of an energy supplying system and an energy consuming system
Wavelength and power scalable waveguiding-based infrared laser system
Etching composition
Method and system for automatic 3-D image creation
  Randomly Featured Patents
Accessory for boot
Optical fiber connector comprising a glass ferrule, and method of making same
Timing analyzer for embedded testing
Quiet ice making apparatus
Liquid developer compositions
Internally blocked polyamine crosslinkers and coating compositions containing the same
Biologically active complex
DMOS transistor
Surface-mounted electrical connector
Vanadate cathode active material and method of making same