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. 13, 1992
Filed:
Sep. 30, 1991
Robert A Koontz, Ridgecrest, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A thermally activated case venting safety apparatus is used to minimize the otential for detonation of a warhead or other encased explosive when such item is subjected to excessive thermal environments. An aft end closure plate to a warhead casing is secured using an expandable snap ring with a temperature activated releasing mechanism. The snap ring is expanded using a caliper device with an adjustable slide assembly which adjust the snap ring to the required dimensions. An eutectic solder plug or similar plug is attached to the bottom base of the adjustable slide assembly and holds the snap ring in the expanded position. The plug will melt at a predetermined temperature and thus allow the expandable snap ring to retract. Once the snap ring has retracted, the closure plate will be ejected due to the internal case pressure and the warhead case will vent.