Eyeglasses with lenses changeable

Details Eyeglasses with lenses changeable Eyeglasses with lenses changeable

2000-10-26

2001-09-18

Mai, Huy (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Brace arm or semi-rimless mounting

C351S108000, C351S109000

Reexamination Certificate

active

06290355

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to eyeglasses with lenses changeable, particularly to one having a frame with two semi-rims for holding two lenses, and each semi-rim having a bent fit means formed respectively in two ends to fit in a insert hole of each lens, with the semi-rim fitting in a fit groove formed in an upper curved edge of each lens so as to stabilize the leans in each semi-rim without swaying or failing off. In addition, the lenses with different colors can be readily changeable if wanted.
2. Description of the Prior Art
Known conventional semi-rim eyeglasses shown in
FIGS. 1 and 2
, include a frame
1
with two semi-rims
10
, each semi-rim
10
having two holes
11
,
11
′ respectively in two ends, and two lenses
12
combined in the two semi-rims
10
with two hang strings
13
having one end fixed in the two holes
11
.
11
′ of the two ends of the semi-rims
10
and extending under the lower curved edge of each leans
12
and then the other end protruding in one of the holes
11
and fixed firmly with each semi-rim
10
.
However, the known conventional semi-rim eyeglasses have troublesome assembling the hang string
13
with the semi-rims
10
in order to keep the lenses
12
in the semi-rims
11
resulting in difficulty in changing the lenses
12
, and in addition, the end portions of the hang strings
13
may form a gap between the semi-rim
10
and the lens
12
as shown in
FIG. 2
, with the lenses
12
unable to closely contact with the semi-rims
10
. Consequently the lenses
12
are not kept stable in the semi-rims
10
, liable to fall down in case of receiving a shock, and in addition, the tightness of the hang strings
13
against the lenses
12
is not easily adjustable, with the lenses
12
apt to fall off in case of looseness and with the hang strings
13
apt to break in case of excessive tightness. Moreover, the hang strings
13
may weaken owing to erosion with sweat or oil after a period of use, not enduring long.
SUMMARY OF THE INVENTION
The objective of the invention is to offer eyeglasses with lenses changeable easily and not falling off.
The feature of the invention is two semi-rims provided in a frame, and each semi-rim has two fit means formed in two ends to fit firmly in two insert holes provided in two opposite sides of each lens so as to keep the lens tightly enough with the two semi-rims without falling off.


REFERENCES:
patent: 2208103 (1940-07-01), Paterson
patent: 2254746 (1941-09-01), Line
patent: 6070978 (2000-06-01), Temming

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