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. 25, 2019
Filed:
Mar. 18, 2014
Applicant:
Btm Corporation, Marysville, MI (US);
Inventors:
Glenn R. Koenigbauer, Marine City, MI (US);
Steven J. Sprotberry, Marysville, MI (US);
Paul D. Boyes, Hillsborough, NZ;
Assignee:
BTM Company LLC, Marysville, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23Q 1/00 (2006.01); B21D 39/03 (2006.01); B21D 37/20 (2006.01);
U.S. Cl.
CPC ...
B21D 39/031 (2013.01); B21D 37/20 (2013.01); Y10T 29/53996 (2015.01);
Abstract
A clinching apparatus includes a clinching punch having a specifically dimensioned tapered surface which improves the strength of a clinch joint created therewith. In another aspect, a tapered surface adjacent a distal end of a clinching punch has an angle of 20-35° relative to a distal end. A further aspect of a clinching apparatus provides a tapered surface adjacent a distal end which is configured in accordance with a specific formula.