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. 04, 2003
Filed:
May. 13, 2002
Applicant:
Inventor:
Jay W. Roberts, Meridian, ID (US);
Assignee:
Micron Technology, Inc., Boise, ID (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B26F 1/00 ; B21D 4/508 ;
U.S. Cl.
CPC ...
B26F 1/00 ; B21D 4/508 ;
Abstract
A punch and die tool for cutting a slug from a sheet of material that is retained in the opening of the die and does not adhere to or follow the punch on its upward stroke, and a method for retaining a slug in a die, are disclosed. The die is formed with one or more irregularities or grooves on the edge of the die face so that the slug cut by the operation of the punch and die will have a burr on its edge. The burr causes the slug to lodge in the inside surface of the die and prevents the slug from following the punch on its upward stroke.