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:
May. 06, 1997
Filed:
Apr. 24, 1995
Dominique Sabin, Herbeville, FR;
Packinox, Paris, FR;
Abstract
A process for forming a corrugated metal sheet (1) which includes perforations (2) over its entire surface, in which process the metal sheet (1) is laid on a die (11) provided with corrugations (11b), the space (13) delimited beween the metal sheet (1) and the die (11) is sealed by blocking off the perforations (2) in the metal sheet (1), an explosive charge (16) with remote-controlled firing is placed on top of the upper face of the metal sheet (1), a vacuum is created in the space (13) delimited between the metal sheet (1) and the die (11), the entire assembly is immersed in a firing tank filled with water, and firing of the explosive charge is initiated, so that the energy release presses the metal sheet (1) against the die (11). The invention also includes a device for forming a corrugated metal sheet and a corrugated metal sheet formed by the process.