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Class 137/158 - Pressure connection at liquid level in boiler or discharge receiver


Subclass of Class 137 - Fluid handling
Definition: Feed-traps which include a gas pressure connection at the
No. of patents: 3
Last issue date: 11/28/2006


NumberTitleIssue Date
7140211Tamper detection security for a tank trailer
This invention relates to a security system aimed at closing and locking a cover of an opening of a tank trailer to avoid any tampering of its content and to prove that the content of the tank has not been tampered. The security system comprises a locking member mov...
11/28/2006
4522227Fill valve responsive to liquid level
The fill valve is responsive to liquid level by passing vented vapor through serial orifices. The inlet flow is stopped by shifting a valve spool which is responsive to the pressure between the orifices. A pressure booster adjacent the vent outlet serves ...
06/11/1985
4191208Automatic fill-stop valve
The automatic fill-stop valve passes the liquid filling a tank. A level-sensing tube passes vapor until the tank liquid level rises that high, and, thereupon, passes liquid. Serial orifices in the sensing passage produce a valve closing signal when the li...
03/04/1980
 
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