Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1995-06-26
1997-03-04
Dang, Hung
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351 57, 351 58, G02C 900, G02C 708
Patent
active
056084706
ABSTRACT:
A prescription lens attachable to a safety glass frame. The safety glass frame is provided with a single lens, a center cross pin and indentation on an inner surface of the safety glass frame juxtaposed the temple pivot pin. A prescription frame includes separate prescription lenses and a central clip that clips onto the cross pin of the safety glass frame. The outer ends of the prescription frame are provided with angular locking ends that are pressed into the indentation on the safety glass frame. Thus, the prescription lens frame is held securely onto the safety glass frame between the safety glass frame and the persons eyes. Damage to the safety glass lens or frame necessitate replacement of only the non-prescription safety glasses because the prescription frame can be removed from the damaged frame and secured to a new safety glass frame.
REFERENCES:
patent: 3787113 (1974-01-01), Shedrow
patent: 4247178 (1981-01-01), Cook
patent: 4810080 (1989-03-01), Grendol et al.
patent: 5026150 (1991-06-01), Weber
patent: 5428407 (1995-06-01), Sheffield
"Introducing Racal intego, the Complete integrated Safety System" Brochure.
2 pages, from Bolle America, Inc./Sport Optical System.
Crews, Inc.
Dang Hung
Greigg Edwin E.
Greigg Ronald E.
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