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:
Apr. 13, 2010
Filed:
Mar. 04, 2005
Applicants:
Edwin G Sawdon, St. Clair, MI (US);
Steven J Sprotberry, Marysville, MI (US);
Inventors:
Edwin G Sawdon, St. Clair, MI (US);
Steven J Sprotberry, Marysville, MI (US);
Assignee:
BTM Corporation, Marysville, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P 11/00 (2006.01); B21D 39/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sheet fastening apparatus and method are provided. In another aspect of the present invention, a die assembly for forming a joint between sheets of material is disclosed wherein the die assembly includes an anvil, at least one die blade disposed adjacent to and overlapping a punch-side of the anvil, a flexible retainer, and a shield that coaxially and radially surrounds a portion of the anvil and/or die blade.