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:
Jan. 09, 1979
Filed:
May. 18, 1977
Applicant:
Inventors:
John J Crowe, Williamsville, NY (US);
Leslie C Kun, Williamsville, NY (US);
George E Nies, East Aurora, NY (US);
Assignee:
Union Carbide Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K / ;
U.S. Cl.
CPC ...
7610 / ; 29445 ; 29525 ; 29558 ;
Abstract
A method of forming an isostress-contoured die from a metal workpiece by discreet, sequential machining steps. A plurality of spaced-apart truncated conoidal projections, arranged in repetitive diamond-shaped patterns, are formed from the workpiece. Depressions are machined in the workpiece portions associated with each diamond pattern and the ridges between adjacent depressions are reduced by machining to form isostress-contoured surface portions between and surrounding the projections.