Apparatus including mold having covering for annular bending/tem

Details Apparatus including mold having covering for annular bending/tem Apparatus including mold having covering for annular bending/tem

1992-06-01

1994-07-12

Woodard, Joye L.

Glass manufacturing

Preform reshaping means with treating means

65287, 65288, 65348, 653741, 6537412, C03B 23023, C03B 27044

Patent

active

053284968

ABSTRACT:
An apparatus for bending/tempering glass sheets raised to their softening point with a view to their bending and tempering includes an upper plate mold and a lower annular mold on which the glass sheets are deformed, and with respect to which the edge of glass sheets move as a result of their deformation, particularly by horizontal pressing between the upper bending mold and the lower mold. The bent sheets are thermally tempered in air on the same annular mold in a tempering station. This annular mold is designed in such a way that its contact surface with the glass sheets at the start of their deformation on the mold, being located on the outer periphery of the mold, is appropriate for the mark-free displacement of the glass on the mold and in particular for pressing, and so that at the end of displacement, and in particular at the end of pressing, the contact surface located on the inner periphery of said mold is appropriate for tempering.

REFERENCES:
patent: 3694182 (1972-09-01), Akfirat et al.
patent: 3741743 (1973-06-01), Seymour
patent: 4661142 (1987-04-01), Bartusel et al.
patent: 4678495 (1987-07-01), Yoshizawa
patent: 4859225 (1989-08-01), Kuster et al.
patent: 4906271 (1990-03-01), D'Iribarne et al.

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