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. 07, 1980
Filed:
May. 14, 1979
Harold E McKelvey, Plymouth, MI (US);
Shatterproof Glass Corporation, Detroit, MI (US);
Abstract
The flat glass sheet to be curved, which is at softening temperature, is advanced in a horizontal position on a curved bed formed by a series of flexible shaping rolls including coiled springs having progressively increasing degrees of curvature such that as the sheet moves thereon it will be caused to bend under its own weight to gradually assume the curvature of the shaping rolls. The shaping rolls are provided with end sections which are angularly adjustable to independently alter the degree of curvature of the rolls. The shaping bed is followed by a second bed formed of flexible rolls having a constant curvature on which the curved sheet is supported and subjected to a tempering and or cooling procedure. Means is also provided for driving the rolls of the shaping bed and the rolls of the second bed to move the glass sheets forwardly at a constant speed.