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:
Jan. 15, 2002
Filed:
Nov. 15, 1999
Applicant:
Inventors:
Heinrich Friederich, Gross-Rohrheim, DE;
Reinhard Schmoock, Netphen-Nenkersdorf, DE;
Assignee:
EJOT Verbindungstechnik GmbH & Co. KG, Bad Laasphe, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 3/504 ;
U.S. Cl.
CPC ...
F16B 3/504 ;
Abstract
The invention comprises a self-screwthread-forming screw of corrosion-resistant steel, which screw is partially precipitation-hardened. The invention also concerns a process for producing such a screw in which the screw is firstly shaped by pressing and rolling or by screwthread rolling or cutting or in other known fashion characterized in that the screw is then partially precipitation-hardened.