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. 11, 2011
Filed:
Dec. 14, 2006
Junji Hori, Chiyoda-ku, JP;
Taisei Mori, Chiyoda-ku, JP;
Masao Fukami, Chiyoda-ku, JP;
Yutaka Kitajima, Chiyoda-ku, JP;
Junji Hori, Chiyoda-ku, JP;
Taisei Mori, Chiyoda-ku, JP;
Masao Fukami, Chiyoda-ku, JP;
Yutaka Kitajima, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
It is an object of the present invention to provide a method for bending a glass sheet which can appropriately prevent cloth mark due to suctioning. The present invention is characterized by a method for bending a glass sheet comprising a heating step for heating a glass sheet to soften the glass sheet, and a bending step for bending the heated and softened glass sheet to have a predetermined shape, wherein the bending step comprises a step of pressing the heated and softened glass sheet, whose edges are supported by a supporting frame, against a forming surface of a bending mold opposed to the supporting frame, and a vacuum forming step for providing a negative pressure through a plurality of suction holes formed on the forming surface so that the shape of the pressed glass sheet is bent along the forming surface of the mold, and wherein in the vacuum forming step, the plurality of suction holes are grouped into at least two groups, and the raised negative pressures for the respective groups are lowered at different timings.