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. 26, 2006
Filed:
Dec. 16, 2002
Applicants:
Stanley E. Wojciechowski, Lancaster, CA (US);
John M. Parker, Ann Arbor, MI (US);
Inventors:
Stanley E. Wojciechowski, Lancaster, CA (US);
John M. Parker, Ann Arbor, MI (US);
Assignee:
Whitesell International Corporation, Taylor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 53/24 (2006.01); B21H 3/08 (2006.01); B21K 1/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of cold forming a self-attaching female fastener () which includes deforming a fastener blank () having an annular pilot, () an annular flange () surrounding the pilot and a groove () in the flange having cylindrical walls and annular protrusions () on the flange and pilot, then deforming the protrusions toward each other to form an annular re-entrant groove () having relatively inclined arcuate walls.