Drop forming glass sheets with auxiliary shaping means

Details Drop forming glass sheets with auxiliary shaping means Drop forming glass sheets with auxiliary shaping means

1979-06-01

1980-10-21

Kellogg, Arthur D.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65104, 65107, 65268, 65273, 65 252, C03B 2302

Patent

active

042292000

ABSTRACT:
Heat softened glass sheets are held by a flat vacuum platen, portions of the glass sheet are pre-shaped by auxiliary shaping means while the glass sheet is being held, and then the glass sheet is dropped onto a shaping mold to impart the complete 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: 3682613 (1972-08-01), Johnson et al.
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 (1975-03-01), Shaffer et al.
patent: 3973943 (1976-08-01), Seymour
patent: 4092141 (1978-05-01), Frank et al.

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