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:
Apr. 29, 1986
Filed:
Apr. 27, 1984
Irwin Berman, Montclair, NJ (US);
Foster Wheeler Energy Corporation, Livingston, NJ (US);
Abstract
A patch unit apparatus and method for expeditiously closing openings in metal walls by explosive welding. The patch unit comprises a metal plate having on one side an explosive charge located near the plate perimeter, and having on the opposite side a continuous double angled recess surface. After cleaning the wall surface, the patch unit is placed centrally over an opening to be closed and initially secured to the wall by an adhesive material provided on the plate side opposite from the explosive. If necessary, a mechanical type seal can also be used for improved sealing of the patch unit to the wall. The explosive charge is then detonated to explosively force the patch plate unit against the wall at high velocity, so as to weld the plate onto the metal wall to permanently close the opening, and thereby provide substantially the original strength to the metal wall.