Combination safety glasses

Details Combination safety glasses Combination safety glasses

1988-03-14

1989-01-10

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With auxiliary lenses movable in and out of the optical path

351149, G02C 708

Patent

active

047969865

ABSTRACT:
Combination safety glasses having frame lens openings fitted with non-correcting safety lenses. Raised portions from the rear of said frame lens openings are of integral, one-piece construction therewith. The raised portions have guide recesses that receive and dispose correcting lenses in parallel relationship with the non-correcting lenses. The correcting lenses are of the full magnifier, full prescription, full bifocal or half prescription type. Opposite ends of the raised portions have nasal-side detents and spring-biased, temporal-side locking detents. The nasal-side detents are of integral, one-piece construction with the raised portions, while the temporal-side locking detents are resilient and have spring biasing actions thereby rendering the locking detents spring-biased. The nasal-side detents engage the correcting lenses. The locking detents are cammed outwardly by engagement with the correcting lenses and are thereby spring-biased, and thereafter the locking detents are relieved to return to removable locking engagement with the correcting lenses.

REFERENCES:
patent: 1923567 (1933-08-01), Baker
patent: 3425774 (1969-02-01), Lindblom

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