Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1993-06-09
1994-09-20
Sikes, William L.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351 47, 351 48, 351 57, 351158, 2 13, G02C 710, G02C 902
Patent
active
053493923
ABSTRACT:
In a pair of eyeglasses with filter lenses, each filter is mounted in a ring shaped in the form of a prone U whose opening is directed toward the center of the ring. The ring is contained within an outer ring connected to the eyeglasses mounting frame. A manipulating device comprising a molded member is located inside the ring in a recess formed in the periphery of the filter lens. The outer ring has a semicircular slot permitting the angular displacement of a positioning rod, which is integral with a piston slidably mounted in a recess against the action of a spring. One end of the rod is integral with a gripping member, while the other end is engageable in one of the positioning openings formed through one limb of the shaped outer ring.
REFERENCES:
patent: 505650 (1893-09-01), Francis
patent: 624445 (1899-05-01), Bennum
patent: 868857 (1907-10-01), Garner
patent: 1181291 (1916-05-01), Clarke
patent: 1386989 (1921-08-01), Capper
patent: 1596810 (1926-08-01), Cooney
patent: 1647626 (1927-11-01), Hopson
patent: 1735021 (1929-11-01), Stewart
patent: 3958867 (1976-05-01), Morgan
patent: 4511226 (1985-04-01), Freeman
Parsons David R.
Sikes William L.
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