Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate
2000-03-15
2001-07-03
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Connectors
C351S063000, C351S153000, C016S228000, C002S454000
Reexamination Certificate
active
06254235
ABSTRACT:
BACKGROUND OF THE INVENTION
1) Field of the Invention
The invention is related to an improved connection structure for ear upholders for eyeglasses especially, an integrally molded frame lens and eyeglass frame in an arch shape. With the improved ear upholder connection structure, the eyeglasses are more flat, easier to be put into an eyeglass case, and minimize the degree of wearing on the body of eyeglasses than those products of the prior art.
2) Description of the Prior Art
Eyes are windows of the soul. Human beings are able to visualize the bright world through their eyes. However, eternal normal eyesight is never possible to achieve within one's whole life. Improper reading posture leads to eye diseases, and the eyesight of the aged is declined for almost all the human beings. Thus, eyeglasses become widely applied tools for eyesight correction. For a user's convenience, eyeglasses suppliers have developed simplified, lighter, and more easily carried eyeglasses structures. In public places, for example, a library, certain simple and convenient eyeglasses are provided for the use of users. As depicted in
FIG. 1
, the simple and convenient eyeglasses are made of resin or plastics material. Transparent frame lens
10
and eyeglasses frame
11
are primarily integrally molded, then ear upholders
20
and
21
are joined at the ends of eyeglasses frame
11
. Usually, the connection structure is comprised of the extruded connection element
11
A and
11
B at both sides of eyeglasses frame
11
. A fork
20
A, which is able to clamp connection elements
11
A and
11
B is fabricated at the connection end of ear upholders
20
and
21
. Between connection elements
11
A,
11
B and forks
20
A, there is a tenon forming the interlocked mechanism having convex and concave portions. The connection method can also be replaced by a screw, or the like. The connection ends of ear upholders
20
and
21
are slightly away off ear upholders
20
and
21
. When tube
20
B of the ear hanging portion is raised to unfold the ear upholders, very frequently tube
20
B is not able to hold against the lateral rim of eyeglasses frame
11
. As a result, the opening angle for ear upholders
21
greatly exceeds the applicable angle of use, which is perpendicular to eyeglasses frame
11
as shown in the figure and ear upholders
21
need to be adjusted prior to usage. Because the maximum opening angle for ear upholders
20
and
21
is not determinate, it is fairly inconvenient for users to wear the eyeglasses.
Besides, if eyeglasses frame
11
and frame lens
10
extend in the direction of integral flatness and form roughly flat eyeglasses, the eyeglasses are easier to insert an eyeglass case after ear upholders
20
and
21
are folded. However, from the standpoint of complying with the physical engineering of curved surfaces of naked eyes, the direction of the plane formed by eyeglasses frame
11
and frame lens
10
is optimal if slightly extending in certain curvature as shown in the figures. The ear upholders
20
and
21
, and the frame
11
of the eyeglasses after folding form the configuration shown in FIG.
2
. The space between the folded ear upholders
20
and
21
and frame lens
10
is expanded making it very difficult to put eyeglasses into tubular case
30
. If the space of a case for eyeglasses is limited, one must keep on forcing eyeglasses to close the case. As a result, the eyeglasses body is scratched when putting eyeglasses into the case
30
. In the meantime, the eyeglasses have a certain integral material flexibility and will be expanded against the inner side of the case when it is pushed strenuously into the eyeglass case. This causes one to strenuously pull eyeglasses out of the case prior to use.
Due to the integrally molded eyeglasses lens and frame in a curve, the connection structure requires improvement.
SUMMARY OF THE INVENTION
The invention is an improved connection of ear upholders for integrally molded arch eyeglasses comprising a lens and a frame. The connection ends of the ear upholders form curved hooks. When the ear upholders are unfolded prior to wearing the eyeglasses, the hook rim of the connection end will gradually reach against a lateral rim of the eyeglasses frame. When the angle for unfolding the ear upholders is limited to a direction perpendicular to the eyeglasses frame, users may unfold the ear upholders and fix them in the preset right angle automatically without adjusting the positions of the ear upholders. Not only is it very convenient for the users, but the eyeglasses are flatter after the ear upholders are folded. The defects that the eyeglasses expand after folding the ear upholders, that the eyeglasses must be forced into a case, and that the eyeglasses will be scratched are therefore improved.
The detailed structure, application principles, functions, and effects for the invention herein are depicted on the basis of the following figures and illustrations.
REFERENCES:
patent: 5640218 (1997-06-01), Kanda
Dang Hung Xuan
Dougherty & Troxell
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