Interchangeable eyeglass lens system

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Brace arm or semi-rimless mounting

Patent

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Details

351107, 351108, 351149, G02C 104, G02C 500

Patent

active

055877478

ABSTRACT:
An interchangeable eyeglass lens system for sunglasses and other eyewear so that more than one pair of lenses can be used with a particular frame. Lenses particularly adapted for interchangeability and having concavities on the lens periphery for engaging fastener devices, such as studs, resilient tangs, and spring loaded detents on the frame, are included in the system, which allows for the use of a relatively expensive or rigid frame without compromising the structural integrity of the overall eyeglass set. A complete system would have a pair of removable lenses, a frame having a nosebridge which can be removable also, and fasteners mounted on or within the frame or nosebridge for releasably holding the lenses in place on the frame by interengaging the concavities on the lenses. A removable nosebridge with antirotational device, and a spring loaded detent system adapted for use in the system are disclosed, as is a method of removably attaching a lens to the frame of the invention.

REFERENCES:
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patent: 2444498 (1948-07-01), Cochran
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patent: 2778270 (1957-01-01), Pomerance
patent: 3233250 (1966-02-01), Jonassen
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patent: 4824233 (1989-04-01), Jannard
patent: 4834523 (1989-05-01), Porsche
patent: 4951322 (1990-08-01), Lin
patent: 5293185 (1994-03-01), Berger et al.

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