Method and apparatus for shaping glass sheets by drop forming

Details Method and apparatus for shaping glass sheets by drop forming Method and apparatus for shaping glass sheets by drop forming

Filed on

1979-06-01

Date issued

1980-11-11

Examiner

Kellogg, Arthur D.

Patent Class

Glass manufacturing

SubClass

Processes

SubSubClass

Reshaping or surface deformation of glass preform

Other Related Categories

65104, 65107, 65268, 65273, 65 254, C03B 2302

Type

Patent

Status

active

Patent number

042330491

Description

ABSTRACT:
Heat-softened glass sheets are held by a flat vacuum platen and dropped onto a shaping mold to impart the desired curvature to the glass sheet.

REFERENCES:
patent: 3148968 (1964-09-01), Cypher et al.
patent: 3223501 (1965-12-01), Fredley et al.
patent: 3332759 (1967-07-01), McMaster et al.
patent: 3476540 (1969-11-01), Ritter et al.
patent: 3507639 (1970-04-01), Seymour
patent: 3573889 (1971-04-01), McMaster et al.
patent: 3600150 (1971-08-01), Rougeux
patent: 3607187 (1971-09-01), McMaster
patent: 3676098 (1972-07-01), Hall
patent: 3690856 (1972-09-01), Bryan
patent: 3701643 (1972-10-01), Frank
patent: 3713799 (1973-01-01), McMaster
patent: 3846104 (1974-11-01), Seymour
patent: 3869271 (1973-07-01), Shaffer et al.
patent: 3973943 (1976-08-01), Seymour
patent: 4092141 (1978-05-01), Frank et al.

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