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:
Feb. 09, 1982
Filed:
May. 30, 1980
Applicant:
Inventors:
William A McPhee, Houston, TX (US);
Timothy G Golian, Houston, TX (US);
Assignee:
Dresser Industries, Inc., Dallas, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175-456 ; 166 551 ; 102260 ; 102320 ; 102331 ;
Abstract
An improved safe-arm method and apparatus is provided for preventing unwanted detonation of shaped charge perforating guns while in storage and in transport, yet providing quick and easy arming at the well site. An interrupter member is inserted within an air gap between an ignitor section and an explosive charge section. To ready the perforating gun for use, a lanyard connected to the interrupter and extending externally from the perforating gun housing is pulled, removing the interrupter from the gap and arming the perforating gun section.