Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Reexamination Certificate
2006-01-31
2006-01-31
Walls, Dionne A. (Department: 1731)
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
C065S102000
Reexamination Certificate
active
06990835
ABSTRACT:
In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106dPa·s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn. Then the partially shaped glass/glass ceramic product is removed by compressed air and/or mechanically with lifting members (8). An apparatus for performing this process is also described.
REFERENCES:
patent: 3582304 (1971-06-01), Bognar
patent: 3819349 (1974-06-01), Shimizu et al.
patent: 3964856 (1976-06-01), Day
patent: 4047915 (1977-09-01), Schaffernicht et al.
patent: 25 28 421 (1976-12-01), None
Abraham Hans-Walter
Hahn Gerhard
Hochhaus Roland
Hoppe Bernd
Lemm Hermann
Schott AG
Striker Michael J.
Walls Dionne A.
LandOfFree
Process for partial shaping of flat glass or glass-ceramic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for partial shaping of flat glass or glass-ceramic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for partial shaping of flat glass or glass-ceramic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3570738