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:
Jun. 09, 1981
Filed:
Jun. 08, 1978
Dynamit Nobel Aktiengesellschaft, Troisdorf, DE;
Abstract
A fastening element having a cavity containing an explosive charge arranged so that, upon explosion of the explosive charge, anchoring of the fastening element in a bore of a workpiece takes place automatically. This fastening element functions both as a rivet and nail in combination and comprises sleeve means defining the cavity containing the explosive charge at one end and providing an aperture at the other end, and a nail disposed within the sleeve means, said nail comprising a head, shank and a tip and being arranged to be driven outside the aperture formed in the other end of the sleeve means. The head of the nail acts as a piston which can be driven by explosion of the explosive charge and as a stop which arrests the driving-out movement when the shank of the nail has passed through said aperture.