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:
Nov. 04, 1986
Filed:
Aug. 09, 1984
Peter Wincierz, Steinbach, DE;
Hans P Sattler, Bad Homburg, DE;
Suddeutsche Metallindustrie GmbH & Co. KG, Nuremberg, DE;
Abstract
Rivets for use in the aircraft industry are made from a wrought aluminum alloy (Material No. 3.1324 in accordance with DIN). As that alloy will precipitation-harden at room temperature, the rivets must be closed immediately after they have been annealed and quenched. The time in which the rivets can be deformed can be extended to as much as one week if the rivets are stored below -17.degree. C. In order to overcome said disadvantages in the processing of the rivets, 0.002 to 0.3% cadmium is added to the wrought aluminum alloy. The resulting modified material exhibits a delayed precipitation hardening at room temperature and even when it is fully precipitation-hardened has a very high ductility. For this reason the precipitation hardening will not impose restrictions as regards the time in which rivets made of said alloy can be closed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile