The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 1990
Filed:
Mar. 18, 1988
Applicant:
Inventor:
James R Ellett, Edmonton, CA;
Assignee:
Bralorne Resources Limited, Alberta, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251 635 ; 137458 ; 251 63 ; 251359 ;
Abstract
A latching trip valve for opening and closing a safety device. The trip valve is operable manually and from the pressure of a pilot circuit which monitors the operating conditions of a pipeline. A floating seat is movable under the influence of a longitudinal movable poppet and its included seal means. The floating seat and seal means forms a closed passage until the pressure of the pilot circuit decreases whereas the passage is opened.