Safety spectacles

Details Safety spectacles Safety spectacles

1977-06-06

1980-09-16

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Continuous rim mounting

351 41, 351156, 351122, 2442, G02C 100, G02C 300, G02C 514, A61F 902

Patent

active

042226406

ABSTRACT:
Safety spectacles have an inner frame of hard elastic plastic material extending from one end piece, across the bridge to the other end piece. The base plates for the side piece hinges are embedded in the inner frame. A continuous wire is embedded in the inner frame. The inner frame is completely covered with a soft, elastic, polyurethane foam several millimeters thick which determines the shape of the spectacles.

REFERENCES:
patent: D207127 (1967-03-01), Simpson
patent: 1344474 (1920-06-01), Beattey

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