Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/465
Name: Fluid handling > Line condition change responsive valves > Safety cut-off requiring reset > Fluid counter-biased or unseated valve > With mechanical stop against reopening
Description: Apparatus including a mechanical means which prevents the valve from reopening after seating or closing in the event the fluid pressure is reestablished.










Patents under this class:

Patent Number Title Of Patent Date Issued
8028715 Check valve for vacuum sewage pipe and vacuum sewage system Oct. 4, 2011
6880767 Two trigger safety circuit for water cleaning lance Apr. 19, 2005
5860446 Method and apparatus for safely controlling fluid flow Jan. 19, 1999
5709239 Automatic shut-off safety device Jan. 20, 1998
4224962 Change valve Sep. 30, 1980
4044790 Self re-arming valve Aug. 30, 1977
3933444 Flash back arrestor Jan. 20, 1976











 
 
  Recently Added Patents
Resin composition and display device using the same
Methods and devices for creating, compressing and searching binary tree
Differentiated PSIP table update interval technology
Signal processing apparatus and methods
Apparatus and method for scrolling a screen of a portable terminal having a touch screen
Fabric-backplane enterprise servers with pluggable I/O sub-system
Light emitted diode
  Randomly Featured Patents
Method for increasing the brightness of limestone
Method and system for using common subchannel to assess the operating characteristics of transducers
Modular construction element
Semiconductor single crystal ingot cutting jig
Blood pressure cuff
Display substrate and display device
Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines
Device for automatic reciprocation of lens angle and aperture of surveillance camera
Method for manufacturing semiconductor device
Circuit board with electrical components, in particular surface-mounted devices