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:
Nov. 09, 2010
Filed:
Sep. 25, 1998
Applicants:
Tzyh-chyang Cherng, Howell, MI (US);
Yu Zhang, Troy, MI (US);
Inventors:
Tzyh-Chyang Cherng, Howell, MI (US);
Yu Zhang, Troy, MI (US);
Assignee:
Bernal, Inc., Rochester Hills, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
B21K 5/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cutting die is formed by scanning a laser beam along a path corresponding to a blade pattern, and introducing a selected powder to build up an integral blade of high grade, and hard-to-wear material on the relatively softer die body. The final blade shape is machined or produced by EDM or milling. Further hardening by heat treatment is optional. Other heat sources and cladding materials could be used.