Wrinkle prevention frame for lens manufacture

Details Wrinkle prevention frame for lens manufacture Wrinkle prevention frame for lens manufacture

1983-04-22

1985-01-22

Schroeder, Werner H.

Textiles: ironing or smoothing

Smoothing implements

Stretchers

156323, D06C 308

Patent

active

044943440

ABSTRACT:
A device to prevent optical distortion in glass-plastic composite lenses comprising an open outer ring having adjusting means, an inner ring held by the outer ring, and an elastic material in stretched position covering the inner ring and held in stretched position by a force exerted on the outer ring by the tightening of the adjusting means.

REFERENCES:
patent: 2957269 (1960-10-01), Nohl et al.
patent: 3596385 (1971-08-01), Tachibana
patent: 3818620 (1974-06-01), Field et al.
patent: 3885333 (1975-05-01), Zachary
patent: 3906647 (1975-09-01), Bates, Jr.
patent: 4038014 (1977-07-01), Dusza et al.
patent: 4079529 (1978-03-01), Jennen et al.
patent: 4422250 (1983-12-01), Golan

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