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:
Sep. 14, 1999
Filed:
Aug. 04, 1998
Scott L Clark, Oregon, OH (US);
Thomas L Shaw, Findlay, OH (US);
Edward G Bollin, Rossford, OH (US);
David B Nitschke, Perrysburg, OH (US);
Glasstech, Inc., Perrysburg, OH (US);
Abstract
Glass sheet forming apparatus (12) and a glass sheet forming method utilize a mold (20) having a curved forming face (22) with holes (26) in which a vacuum is drawn to form a glass sheet. A vacuum distributor (48) of the apparatus distributes a vacuum impulse of at least 0.1 atmospheres of vacuum from a valved vacuum reservoir (52) through a plurality of tubes (58) to a limited number of the holes (26) to provide additional forming of the glass sheet. The vacuum impulse distributor (48) is located within a vacuum chamber of the mold (20) that draws the vacuum by a gas jet pump in the holes (26) to which the vacuum impulse is not distributed.