Sport eyeglasses having removable lenses

Details Sport eyeglasses having removable lenses Sport eyeglasses having removable lenses

2000-03-28

2001-05-08

Mai, Huy (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Continuous rim mounting

C351S092000, C351S098000, C002S445000

Reexamination Certificate

active

06227665

ABSTRACT:

FIELD OF THE INVENTION
The present invention generally relates to eyeglasses, especially used for sport activities and so constructed as to allow lenses to be replaced as a result of damages, changes of prescription, shade preference or other reasons.
BACKGROUND OF THE INVENTION
In sport activities, the risk of eyeglasses lenses being damaged is high thereby resulting in the need for a new set of eyeglasses. Additionally, because of the possibility of changes in lens prescription, eyeglasses having the feature of allowing lenses to be easily removed and installed are more and more in demand.
Exchangeable lens eyeglasses to overcome the above described problems have been introduced, see for example, U.S. Pat. No. 4,759,622 issued Jul. 26, 1998 to Schmidthaler and in U.S. Pat. No. 5,682,621 issued Nov. 4, 1997 to Park.
SUMMARY OF THE INVENTION
Disclosed herein are improvements in sport safety glasses to solve the problems of conventional sport glasses in that the lenses may be easily installed to or removed from the eyeglasses frame whenever a user needs to replace them with lenses having a different prescription or shade, or simply to replace a damaged lens.
An embodiment relates to sport eyeglasses having removable lenses which includes a one piece plastic molded frame that includes a pair of lens receiving sections, each having a lens retaining means therein, a pair of opposite temple sections extending to a respective side of the lens receiving sections, and a central bridge section integral with the lens receiving sections. The bridge section is split to define an upper bridge part and a lower bridge part which are capable of being manually distanced from one another to define a gap and to allow lenses to be installed in the lens receiving sections. Means are provided to close the gap and to fixedly retain the lenses in their respective lens receiving sections.
In one embodiment, a fastening element extends through openings in both upper and lower bridge parts and serves to open or close the gap.
In another embodiment, the eyeglasses have integral pins mounted to the rear face of each lens receiving section so that a nose pad may be added to the eyeglasses.
Further objects and scope of protection will be better understood by the detailed description of one embodiment described hereinbelow.


REFERENCES:
patent: 2551144 (1951-05-01), Lindemann et al.
patent: 4405214 (1983-09-01), Bolle
patent: 4759622 (1988-07-01), Schmidthaler
patent: 5069541 (1991-12-01), Holmes et al.
patent: 5257050 (1993-10-01), Wiedner
patent: 5682621 (1997-11-01), Park
patent: 5790230 (1998-08-01), Sved
patent: 5802622 (1998-09-01), Baharad et al.
patent: 5815235 (1998-09-01), Runckel
patent: 5963295 (1999-10-01), Pernicka

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