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:
Oct. 13, 2009
Filed:
Jul. 12, 2005
Barry A. Lee, Fort Wayne, IN (US);
Thomas R. Neuenschwander, Fort Wayne, IN (US);
Barry A. Lee, Fort Wayne, IN (US);
Thomas R. Neuenschwander, Fort Wayne, IN (US);
L.H. Carbide Corporation, Fort Wayne, IN (US);
Abstract
A progressive die assembly and method for manufacturing lamina stacks from a strip of substantially planar material, in which at least some of the individual laminas are formed with portions which extend from, or are otherwise not within, the plane of the material strip. The die assembly includes die stations having punches for punching features substantially within the plane of the strip corresponding to individual laminas, such as lamina profiles and lamina interlock features. Additionally, the die assembly also includes at least one forming station which includes a selectively actuable forming tool which is configured to form a lamina portion in the strip which is disposed outwardly of the strip plane, such as by bending a portion of the strip. The die further includes a blanking station including a blanking punch for blanking individual laminas from the strip, and at least one staking punch for engaging lamina interlock features to interlock a blanked lamina with previously blanked laminas in a choke cavity to form an interlocked lamina stack.