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:
Feb. 16, 1999
Filed:
Oct. 08, 1997
Kazuyuki Komagata, Yokohama, JP;
Toru Iseda, Yokohama, JP;
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
For breaking and cutting a glass to obtain a glass plate having a rectangular shape, a first preliminary break is formed in a portion of a glass ribbon near a side edge of the glass ribbon along a first planned breaking and cutting line perpendicular to a transferring direction of the glass ribbon. Local heating is movably applied to a portion of the first preliminary break near an end of the first preliminary break to progress a first actual breaking and cutting line therefrom. A first bending moment is applied along the first planned breaking and cutting line to break and cut the glass ribbon in a direction substantially perpendicular to the transferring direction so as to obtain a glass plate. Second preliminary breaks are formed in an end of the glass plate along second planned breaking and cutting lines substantially parallel with the transferring direction. Local heating is movably applied to portions of the second preliminary breaks near each end thereof to progress second actual breaking and cutting lines, using as starting points the ends of the second preliminary breaks. Second bending moments are applied along the second planned breaking and cutting lines to break and cut the glass plate in a direction substantially parallel with the transferring direction.