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:
Aug. 12, 1980
Filed:
Nov. 27, 1974
George A Dickinson, St. Helens, GB;
Pilkington Brothers Limited, St. Helens, GB;
Abstract
Flat glass is manufactured by the float process and is attenuated to a thickness in the range 1.5 mm to 5 mm. In an attenuation zone of the bath the viscosity of the glass is controlled to regulate attenuation of the float ribbon to a desired width and thickness and transverse barriers are provided on the floor of the tank structure, containing the molten metal along which the ribbon is advanced, to constrain to forward flow the molten metal entrained beneath the ribbon. Upstream counterflow from the cooler end of the tank structure is alongside the ribbon and replenishes the molten metal beneath the ribbon between that transverse barrier and an upstream similar transverse barrier.