Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate
2000-09-08
2001-09-04
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Connectors
C351S113000, C351S116000, C016S228000
Reexamination Certificate
active
06283593
ABSTRACT:
BACKGROUND OF THE PRESENT INVENTION
1. Field of Invention
The present invention relates to spectacles, and more particularly to a replaceable spring arm structure for spectacles, which adapted for replacing the spring mounted in the temple, so as to maximize and extend the life span of the spectacles while being cost effective.
2. Description of Related Arts
Referring to
FIGS. 1 and 2
, conventional spectacles
1
comprise a frame body
10
for mounting a pair of lenses
101
,
102
in position. The frame body
10
comprises a bridge
11
connected between the two lenses
101
,
102
, and two side extensions
12
,
13
provided at two outer sides of the lenses
101
,
102
respectively wherein each side extension
12
,
13
has a hinge portion
16
,
17
rearwardly extended therefrom for pivotally coupling a temple
14
,
15
. Each hinge portion
16
,
17
of the spectacles
1
comprises a connecting arm
161
,
171
having a spring
162
,
172
coaxially mounted thereon. The connecting arm
161
,
171
is connected between the side extension
12
,
13
and the temple
14
,
15
. Each connecting arm
161
,
171
has a rear end inserted into a chamber
141
,
151
provided at a front end of the temple
14
,
15
and a front end pivotally connected with the side extension
12
,
13
by means of a screw
18
, so as to rotatably lock up the temple
14
,
15
with the side extension
12
,
13
.
Each spring
162
,
172
is adapted for applying an urging force between the respective side extension
12
,
13
and the temple
14
,
15
such that when unfolding the spectacles
1
, the spring
162
,
172
will be forced to extend and then return to its original form after the temple
14
,
15
is unfolded, so as to retain the temple
14
,
15
in an unfolded position. Likewise, when folding the spectacles
1
, the spring
162
,
172
will also be forced to extend first and then return to its original form after the temple
14
,
15
is folded. So, every time when the spectacles
1
is being unfolded and folded, the spring
162
,
172
is forced to extend and compress such that after a period of the time, the elasticity of the spring
162
,
172
will become weaker or even be broken. The urging force of the spring
162
,
172
may not strong enough to apply between the side extension
12
,
13
and the temple
14
,
15
so that the temple
14
,
15
will tend to loosely affix to the side extension
12
,
13
. The wearer may feel uncomfortable to wear such spectacles.
Since each hinge portion
16
,
17
is affixed between the side extension
12
,
13
and the temple
14
,
15
, the wearer may not able to detach or repair the worn-out parts such that the wearer may even have to waste expense to buy another new spectacle frame for substituting the used one, which is a waste of source.
SUMMARY OF THE PRESENT INVENTION
A main object of the present invention is to provide a replaceable spring arm structure for spectacles, which is adapted for replacing the worn-out spring that loses its elasticity, is broken, or rusted.
Another object of the present invention is to provide a replaceable spring arm structure for spectacles, which has a simple structural design for easy installation or repair of the spring arm.
Another object of the present invention is to provide a replaceable spring arm structure for spectacles, which is adapted to maximize and extend the life span of the spectacles while being cost effective.
Accordingly, in order to accomplish the above objects, the present invention provides a replaceable spring arm structure for spectacles which comprises a frame body for mounting a pair of lenses in position. The frame body comprises a bridge connected between the two lenses and two side extensions provided at two outer sides of the lenses respectively each having the spring arm structure rearwardly extended to pivotally and detachably couple a temple, wherein an elongated slider cavity is coaxially provided at a front end of the temple and at least a locking through hole is perpendicularly formed on the front end of the temple to communicate the slider cavity with outside.
The spring arm structure comprises an elongated spring arm which has a front end connected to the respective side extension and is detachably disposed in the slider cavity in a slidably movable manner, a locking member slidably mounted on the spring arm for locking with the locking through hole of the slider cavity so as to securely hold the spring arm in the slider cavity, and a resilient element which is mounted on the spring arm for applying an urging pressure against the spring arm, so as to normally retain the spring arm at an innermost position of the slider cavity.
During folding and unfolding the spectacles, the spring arm is driven to slide outwardly along the slider cavity by a pulling force applied by the respective temple, so as to compress the resilient element. After the temple is folded and unfolded, the compressed resilient element is automatically rebounded to its original form and the spring arm automatically returns to its original position.
To replace the hinge portion of the side extension, a user may unlock the locking member with the locking through hole such that the spring arm is adapted to be slid apart from the slider cavity, so as to replace the worn-out parts of the spring arm structure such as the resilient element.
REFERENCES:
patent: 5953791 (1999-09-01), Da Forno
Chan Raymond Y.
Dang Hung Xuan
David and Raymond Patent Group
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