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:
Oct. 08, 1985
Filed:
Nov. 14, 1983
Herbert D Gresser, Plainview, NY (US);
Joseph Nussenbaum, New York, NY (US);
Group II Manufacturing Ltd., Hicksville, NY (US);
Abstract
A method of providing a thin parting zone in diamond and other crystal material is used to separate the crystal into multiple parts. The method comprises the following steps. An entrance window is prepared on the outer surface of the crystal. The window can transmit a beam of energy. An energy beam is focussed on a point zone of energy absorbing material which is spaced from the window in the crystal. The energy absorbing zone is generated at the focal point of the beam. The focal point of the beam is scanned through a succession of overlapping potential damage cells which lie along a predetermined parting zone within the crystal. The beam creates a plurality of actual damage cells comprised of shattered material which creates the parting surface. The succession of potential damage cell is such that the previously generated actual damage cells do not lie along the path of the beam between the actual damage cells being generated and the window.