Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Nucleic acid-based tests for prenatal gender determination
Press nut
Methods and systems for enabling community-tested security features for legacy applications
Method for restricting the use of an application program, system for authenticating the user of a measuring apparatus, authentication server, client apparatus and storage medium
Treatment of influenza
Instance management of code in a database
Memristive junction with intrinsic rectifier
  Randomly Featured Patents
Opportunistic use of wireless network stations as repeaters
Container package having integral means for carrying
Method for producing the MwoI restriction endonuclease and methylase
Process for forming metal interconnect stack for integrated circuit structure
Antifungal paints and coatings
Surface treatment apparatus
Apparatus and method for controlling display brightness in an image display device
Method of making up a digital multiplex, and apparatus implementing said method
Piezoelectric device and method for fabricating the same
Surfactant systems for liquid aqueous preparations