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:
Mar. 16, 1999
Filed:
Jun. 07, 1995
Jeffrey Garner, Wigan, GB;
Ian Nicholas Tetlow, Coventry, GB;
Pilkington Glass Limited, St. Helens, GB;
Abstract
A method of bending glass sheets, the method including the steps of gravity bending a glass sheet at elevated temperature on a gravity bending mould in a gravity bending zone of a furnace, press bending the gravity bent glass sheet to a desired shape with an upper mould while the glass sheet is supported by the gravity bending mould as a lower mould in a press bending zone of the furnace and controlling the ambient temperature in the press bending zone thereby to control the cooling rate of the glass sheet in the press bending zone. The invention also provides a method of press bending glass sheets, the method including providing an initially bent glass sheet carried on an articulated gravity bending mould and press bending the glass sheet to a final bent shape by an upper press bending mould which is lowered onto the upper surface of the glass sheet, the upper press bending mould having a net weight of from 50 to 150 kg.