Buckles – buttons – clasps – etc. – Zipper or required component thereof – Slider having specific configuration – construction,...
Reexamination Certificate
2002-04-02
2003-11-18
Knight, Anthony (Department: 3677)
Buckles, buttons, clasps, etc.
Zipper or required component thereof
Slider having specific configuration, construction,...
C024S420000, C024S425000, C024S419000
Reexamination Certificate
active
06647599
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the field of zipper slides, and more particularly to a zipper slide provided with positioning means for restraining interlocking teeth thereof from disengaging when the slide has been moved with a coupled pull tab to a desired position on a zipper.
2. Description of the Prior Art
FIG. 1
to
FIG. 3
illustrate a typical positioning mechanism for a zipper slide. As shown in
FIG. 1
, the positioning mechanism generally includes a slide body
10
that is integrally made by metal or the like, a positioning member
11
, a lid
12
and a pull tab unit
13
. On a top surface of the slide body
10
there are provided a buckling portion
101
and an upwardly extending support portion
102
. The buckling portion
101
and the support portion
102
are used to buckle the positioning member
11
and the lid
12
, respectively. Between the buckling portion
101
and the support portion
102
there are provided a plane surface
105
and a recess
103
. When assembled, a beam
131
of the pull tab unit
13
is placed on the plane surface
105
(as indicated in FIG.
3
). The lid
12
covers the buckling portion
101
, the plane surface
105
, the recess
103
, the support portion
102
, the positioning member
11
, and the front of the pull tab unit
13
.
Engagement channel
104
is provided in a front end of the slide body
10
. As shown in
FIG. 2
, the engagement channel
104
slides along the lengths of interlocking teeth
141
of the teeth tapes
14
to facilitate the engagement and disengagement thereof.
The positioning member
11
is monolithically made by using punching technique known in the art. On top of the positioning member
11
there is a pressing spring piece
112
that is connected with the positioning member
11
in a tilt angle as illustrated in
FIG. 1. A
locking part
111
is provided in one distal end of the positioning member
11
for locking or positioning the interlocking teeth
141
of the teeth tapes
14
in place. When assembled, the locking part
111
is inserted into the recess
103
. By pulling the pull tab unit
13
in a tilt angle relative to the top surface of the slide body
10
, as indicated in FIG.
2
and
FIG. 3
, the locking part
111
separates from the interlocking teeth
141
to permit the sliding of the zipper slide.
Still referring to FIG.
2
and
FIG. 3
, the positioning member
11
and pull tab unit
12
, which are both covered by the lid
12
, facilitate manipulation of sliding the slide body to engage or disengage the metal teeth
141
of opposite teeth tapes
14
. When the pull tab unit
13
is not pulled, the pressing spring piece
112
jabs an interior surface of the lid
12
. By doing this, the pressing spring piece
112
provides the locking part
111
with a downward force to lock the teeth
141
. On the contrary, by pulling the pull tab unit
13
in a tilt angle relative to the top surface of the slide body
10
, the locking part
111
separates from the interlocking teeth
141
to permit the sliding of the zipper slide.
The drawback of the prior art structure is that the positioning member
11
with a tilt pressing spring piece
111
formed thereon is difficult to be made small in size by traditional punching technique. This leads to raising cost of the zipper products. Consequently, there is a strong need to provide an improved positioning mechanism to save the cost.
SUMMARY OF THE INVENTION
Accordingly, it is a primary object of the present invention to provide an improved needle locking or positioning mechanism for zipper slides to solve the above-mentioned problems. The needle locking mechanism according to this invention is capable of engaging with either metal teeth or plastic teeth in a more tight-knit way.
According to the claimed invention, a positioning mechanism of a zipper slide for engaging or disengaging two lengths of teeth on two opposite teeth tapes, comprising: a main body having a buckling portion, a plane surface, a recess, and a support portion formed thereon, wherein an engagement channel is formed in the main body; a positioning member positioned on the buckling portion of the main body, wherein the positioning member has a locking part, which inserts into the recess of the main body, formed in one end of the positioning member; a pull tab unit for facilitating the manipulation of pulling the zipper slide, wherein the pull tab unit has a beam that is placed on the plane surface; and a lid connected with a top surface of the main body and covering the buckling portion, the plane surface, the recess, the support portion, the positioning portion, and the front of the pull tab unit.
The buckling portion has a clipping slot formed thereon, the clipping slot clips one end of a restraining stick that is respectively made by using punching technique, and the other end of the restraining stick extends along the length of the positioning member to press the positioning member.
REFERENCES:
patent: 3813736 (1974-06-01), Fukuroi
patent: 4667376 (1987-05-01), Ishii et al.
patent: 5195221 (1993-03-01), Kanamaru et al.
patent: 5528802 (1996-06-01), Akashi
patent: 5664300 (1997-09-01), Mizuno
patent: 5729874 (1998-03-01), Mizuno
patent: 5806151 (1998-09-01), Uchiyama
patent: 5848455 (1998-12-01), Ikehara et al.
patent: 5924174 (1999-07-01), Mizuno
patent: 6237199 (2001-05-01), Chou Wang
Jackson André L.
Knight Anthony
Rosenberg , Klein & Lee
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