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:
Apr. 06, 1999
Filed:
Apr. 01, 1996
Applicant:
Inventor:
Louis Kimball Bigelow, Boylston, MA (US);
Assignee:
Saint-Gobain/Norton Industrial Ceramics Corporation, Worcester, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B28D / ;
U.S. Cl.
CPC ...
125 1602 ; 125 1601 ; 125 21 ;
Abstract
A wire is used to cut or slice diamond by passing the wire rapidly and under light load over and into the diamond surface along a line to be cut. In one form of the invention, the wire comprises a metal that dissolves diamond, such as iron or nickel and the wire and/or diamond is preferably heated to approach the metal-carbon eutectic temperature and create sensible reaction rates of the carbon on the wire surface. In another form of the invention, the moving wire carries a molten oxidant to enhance the cutting rate. The molten oxidant may be, for example, sodium nitrate, which oxidizes carbon.