Acoustic energy shaping

Glass manufacturing – Processes – Forming product or preform from molten glass

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Details

65 32, 65 87, 65102, 65DIG4, 65DIG7, 65 4B, 73505, 264 23, 264345, C03B 3700, C03B 1514

Patent

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040521818

ABSTRACT:
A suspended mass is shaped by melting all or a selected portion of the mass and applying acoustic energy in varying amounts to different portions of the mass. In one technique for forming an optical waveguide slug, a mass of oval section is suspended and only a portion along the middle of the cross-section is heated to a largely fluid consistency. Acoustic energy is applied to opposite edges of the oval mass to press the unheated opposite edge portions together so as to form bulges at the middle of the mass. In another technique for forming a ribbon of silicon for constructing solar cells, a cylindrical thread of silicon is drawn from a molten mass of silicon, and acoustic energy is applied to opposite sides of the molten thread to flatten it into a ribbon.

REFERENCES:
patent: 3328146 (1967-06-01), Hanlein
patent: 3424838 (1969-01-01), Buus
patent: 3588440 (1971-06-01), Morse
patent: 3620707 (1971-11-01), Van Damme
patent: 3626143 (1971-12-01), Fry
patent: 3629546 (1971-12-01), Fry
patent: 3660062 (1972-05-01), Keller
patent: 3865564 (1975-02-01), Jaeger et al.
patent: 3882732 (1975-05-01), Fletcher et al.
patent: 3944640 (1976-03-01), Haggerty et al.

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