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. 08, 2013
Filed:
Nov. 04, 2003
Haruo Wakayama, Osaka, JP;
Haruo Wakayama, Osaka, JP;
Mitsuboshi Diamond Industrial Co., Ltd., Osaka, JP;
Abstract
A vertical crack is generated at a desired position on a brittle material substrate S by making a wheel tipof a glass cuttermove while being in contact with the substrate surface by a load which does not allow the wheel tipto damage the surface, using an armatureapplying an abrupt impact force for generating the vertical crack having a predetermined depth, to the glass cuttermoving on the substrate. A scribe line is formed as the vertical crack is urged to extend along a planned scribe line, due to a stress gradient exerted onto the vertical crack and occurring between a compressive stress in an irradiation area on the substrate at which a laser beam is irradiated from a laser beam oscillatorand a tensile stress in a cooling area made by a cooling medium released from a cooling nozzle