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:
Sep. 25, 2001
Filed:
Feb. 04, 2000
Applicant:
Inventor:
Martin Johnson, Luleå, SE;
Assignee:
SSAB Hardtech AB, Lulea, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/388 ; B21D 2/832 ;
U.S. Cl.
CPC ...
B21D 5/388 ; B21D 2/832 ;
Abstract
A sheet steel blank is stamped and held in a pair of tools. The blank has holes that are collared by means of mandrels in connection with the forming. The collaring is carried out in the material. In this way, holes with very narrow tolerances can be achieved. Such holes in a bumper beam can be used for guiding the bumper beam during the mounting thereof on a vehicle.