Method for making fused fiber energy-conducting devices

Details Method for making fused fiber energy-conducting devices Method for making fused fiber energy-conducting devices

1966-12-23

1976-11-09

Lovering, Richard D.

Glass manufacturing

Processes

Forming product or preform from molten glass

65319, 65320, 65DIG7, C03B 2320

Patent

active

039908755

ABSTRACT:
Method of making fused bundles of glass fibers permanently vacuum tight with the application of a high compressive force upon the bundles by heating the bundles while under the compressive force and in an evacuated environment to a temperature substantially higher than the softening points of the glasses of the bundles and, in each case, holding the higher temperature and compressive force substantially constant for a time sufficient to attain thermal equilibrium in the bundle whereby permanence of vacuum tightness is attained. Thereafter, the temperature of the bundle is lowered to below the softening points of its glasses, the compressive force is released and the bundle is annealed followed by cooling to room temperature.

REFERENCES:
patent: 2992516 (1961-07-01), Norton
patent: 3150413 (1964-09-01), Zeitlin et al.
patent: 3224851 (1965-12-01), Hicks
patent: 3226589 (1965-12-01), Woodcock
patent: 3350743 (1967-11-01), Ishizuka

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