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:
Dec. 30, 2008
Filed:
Dec. 09, 2004
Applicant:
Steven W. Webb, Worthington, OH (US);
Inventor:
Steven W. Webb, Worthington, OH (US);
Assignee:
Diamond Innovations, Inc., Worthington, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21C 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a die comprising a die core () of a hard material and at least two pre-stressed rings () of increasing diameter placed around the die core and methods of making and using the same. The die core () is held in place by a force generated through deformation of mating geometric features on the die and the rings () of increasing diameter.