Deformable vacuum holder used to shape glass sheets

Details Deformable vacuum holder used to shape glass sheets Deformable vacuum holder used to shape glass sheets

1983-05-24

1985-04-16

Kellogg, Arthur

Glass manufacturing

Glassworking or preform by or with reheating means

Planar sheet preform

65287, 65104, 65106, 294 641, 414121, C03B 23035

Patent

active

045113866

ABSTRACT:
A deformable vacuum holder having a glass facing wall of flexible sheet material subject to local distortion for shaping heat-softened material, such as glass sheets, has a deformable sheet of insulator material attached mechanically to said glass facing wall for engaging the flexible glass facing sheet wall of the vacuum holder. The deformable sheet has a smooth surface less subject to distortion than said glass facing wall facing the engaged glass sheet surface to avoid having scratches and other surface irregularities of the glass facing wall mar the vision area of the shaped glass sheet and is mechanically supported against the flexible sheet wall beyond the margin of the engaged glass sheet instead of being adhered to said flexible sheet wall.

REFERENCES:
patent: 3328151 (1967-06-01), Richardson
patent: 4229199 (1980-10-01), Seymour
patent: 4277276 (1981-07-01), Kellar et al.
patent: 4282026 (1981-08-01), McMaster et al.
patent: 4297118 (1981-10-01), Kellar et al.
patent: 4349375 (1982-09-01), Kellar et al.
patent: 4389064 (1983-06-01), Laverriere

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