Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/518
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Biased open > Oppositely swinging vanes
Description: Valves comprising a pair of edge-pivoted vanes biased in opposite directions, the pivot means comprising closely adjacent parallel axes or both vanes being pivoted on the same axis.










Patents under this class:

Patent Number Title Of Patent Date Issued
8316882 Mechanical fuse to seal pipes upon unintended rupture Nov. 27, 2012
8025077 Mechanical fuse to seal pipes upon unintended rupture Sep. 27, 2011
7639151 Liquid blocking apparatus and system equipped with an alarm or wireless calling device and a storing bag Dec. 29, 2009
7114519 Normally open reverse flow flapper valve Oct. 3, 2006
6615864 Torsion spring pool cleaner reed valve Sep. 9, 2003
5992451 Reed valve for pool cleaner Nov. 30, 1999
5592966 Back-flow preventer Jan. 14, 1997
4222408 Check valve Sep. 16, 1980
4091835 Autokinetic sampling nozzle May. 30, 1978











 
 
  Recently Added Patents
Processing financial documents
Use of cocoa extract
Method and system for remapping processing elements in a pipeline of a graphics processing unit
Blocky hydroxyethylcellulose, derivatives thereof, process of making and uses thereof
Method and system for utilizing Perovskite material for charge storage and as a dielectric
Estimating optical characteristics of a camera component using sharpness sweep data
Turbulence sensor and blade condition sensor system
  Randomly Featured Patents
Receptacle retainer for snap-in style receptacles
Gas permeable pouches for growing cultures
Sheet guiding in thermal printer
Product for molding glass lenses having difficult shapes
Back-lighted display arrangement
Semiconductor memory cell and its fabrication process
Christmas tree
Preparation of phenylazo- or naphthylazobenzenes having thioether groups
Surfboard having a honeycomb core
Process for protecting dyed nylon fibers from colorants and chemical agents