Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Rimless mounting
Reexamination Certificate
2000-06-05
2001-04-03
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Rimless mounting
C351S041000
Reexamination Certificate
active
06210002
ABSTRACT:
RELATED APPLICATION
The present application claims the priority of the Japanese Patent Application No. 11-166267 filed on Jun. 14, 1999.
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a lens holding mechanism of spectacles, in more details, to such mechanism having an extremely simple structure that the respective lenses can be securely clamped without using a screw.
2. Prior Art
Recently, a pair of spectacles, which is wide in vision and light in weight, and shapely in form, is popular among the wearers in general, and particularly a so-called “rimless spectacles” is the most popular among them, which does not require a rim enclosing the lenses because the bridge portion symmetrically connecting a pair of lenses as well as the endpiece portions foldably hinging the temples are directly screwed onto holding apertures opened in the vicinity of the fringe sides of the lenses.
However, such prior rimless spectacles was found inconvenient in use because the clamping portions of the lenses at such holding apertures become fluctuated in no time due to the loosening of a screw or wear on the lens holes. That is to say, conventionally, the lens holding has been secured by providing a supporting piece on the bridge and endpieces to be screwed onto the lenses, and abutting such member on the side surface of the lens, thereby, preventing the rotational displacement of the clamping portions. As such rimless spectacles is very simple in structure, the bridge and endpieces thereof become susceptible to deformation under external forces, with the result that the abutment of the supporting piece to the lens side surface becomes insufficient to bring the lens holding portions into an unstable condition or fluctuation.
Nowadays, the tendency for the users, who are not satisfied with the state of the art, to demand further simplification in design and structure of the rimless spectacles, especially of the lens clamping portions thereof, has further led them to complain of the intervention of such supporting piece and demand that it should be gotten rid of.
Thus, the present invention is to provide a lens holding mechanism of spectacles having such an extremely simple structure that it can dispense with a screw so as to allow further simplification in design, which nevertheless enables the respective lenses to be clamped without fluctuation.
Further, the present invention is to provide a lens holding mechanism for spectacles which is also applicable to prescription eyeglasses, the thickness and rear-side surface curvature of which change according to the degree of vision correction to be required.
DISCLOSURE OF THE INVENTION
In order to securely hold the respective lenses into place without involving any intricate structure therefor, the respective lenses are held to the respective endpieces or both ends of the bridge by abutting a holding member comprising a receiving portion having a first corresponding hole and an abutment portion having a second corresponding hole onto the respective lenses, in the vicinity of the circumferential fringe portion of which a holding aperture is provided, and by inserting a first inserting pin of a joint member mounted onto the respective endpieces or both ends of the bridge into the holding aperture so as to be tightly received into said first corresponding hole via the holding aperture while at the same time by tightly inserting a second inserting pin of said joint member into said second corresponding hole.
REFERENCES:
patent: 6024445 (2000-02-01), Conner et al.
Dang Hung Xuan
Snider Ronald R.
Snider & Associates
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