Glass manufacturing – Preform reshaping means – Sheet bending mold
Patent
1996-09-10
1998-06-23
Griffin, Steven P.
Glass manufacturing
Preform reshaping means
Sheet bending mold
65106, 65291, C03B 23035
Patent
active
057699194
ABSTRACT:
The present invention discloses a method and apparatus for shaping glass sheets to deeply sagged configurations using a lower outline mold and an upper shaping mold while minimizing marking of the sheets by shaping molds. The outline mold includes a support rail which generally corresponds to the desired curvature of a peripheral portion of the sheets to be shaped and supports the glass sheets as they are heated and sagged by gravity to a preliminary shape. The outline mold and the upper mold are then moved relative to each other to position the molds either in close proximity to each other or to press the upper mold against the glass sheets. Pressurized gas is then directed from the mold to at least the unsupported central portions of the preliminarily shaped sheets, to urge these unsupported portions downward and shape the sheets to a desired configuration.
REFERENCES:
patent: 3332762 (1967-07-01), McMaster et al.
patent: 3453161 (1969-07-01), Golightly
patent: 3526489 (1970-09-01), McPhail
patent: 4265650 (1981-05-01), Reese et al.
patent: 4290796 (1981-09-01), Reese et al.
patent: 4529433 (1985-07-01), Bennett et al.
patent: 4597789 (1986-07-01), Reese
patent: 4778507 (1988-10-01), Aruga et al.
patent: 4802903 (1989-02-01), Kuster et al.
patent: 4804397 (1989-02-01), Stas et al.
patent: 4842634 (1989-06-01), Vanaschen et al.
patent: 4859225 (1989-08-01), Kuster et al.
patent: 4894080 (1990-01-01), Reese et al.
patent: 4921520 (1990-05-01), Carlomagno
patent: 5053069 (1991-10-01), Vanaschen et al.
patent: 5066320 (1991-11-01), Lehto et al.
patent: 5079931 (1992-01-01), Lehto et al.
patent: 5250099 (1993-10-01), Kubo et al.
patent: 5292355 (1994-03-01), Nikander
patent: 5383947 (1995-01-01), Montonen
Claassen George R.
Karlo Rudolph A.
Marietti Jeffrey L.
McLaughlin John L.
Rayburn David B.
Griffin Steven P.
PPG Industries Inc.
Siminerio Andrew C.
LandOfFree
Pressure forming of glass sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure forming of glass sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure forming of glass sheets will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1390822