Buckles – buttons – clasps – etc. – Zipper or required component thereof – Slider having specific configuration – construction,...
Reexamination Certificate
1999-11-26
2001-05-29
Brittain, James R. (Department: 3626)
Buckles, buttons, clasps, etc.
Zipper or required component thereof
Slider having specific configuration, construction,...
C024S421000
Reexamination Certificate
active
06237199
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a zipper slide, and more particularly to a zipper slide provided with means for restraining a pull tab thereof from swinging when the slide has been moved with the pull tab to a desired position on a zipper.
There are times some clothes or articles, such as zipper sports jackets and pants, need to have a pull tab of the zipper thereof selectively fixed in place to prevent the tab from swinging while the wearer is moving.
FIGS. 1 and 2
illustrate a currently commercially available zipper slide, a pull tab of which can be fixed in place to prevent the same from swinging. Such conventional zipper slide mainly includes a slide
10
provided with a leaf spring
11
and a tab
12
having a buckle
13
connected thereto. A cam
14
is connected to a head of the buckle
13
and is normally pressed by the leaf spring
11
, such that when the tab
12
is pivotally turned downward by a certain angle relative to the slide
10
, the leaf spring
11
automatically presses the tab
12
to a flat position, as shown in
FIG. 2
, and therefore restrains the tab
12
from swinging. Following are some disadvantages of the above-described conventional zipper slide with tab-restraining means:
1. High Manufacturing Cost is Required:
The leaf spring
11
would be stuck to the slide
10
and loses its designed elasticity if it is plated after being assembled to the slide
10
. To keep the leaf spring
11
in a suitable elastic state, it and the slide
10
must be separately plated before being connected to each other. This inevitably increases the manufacturing cost of the zipper slide.
2. Baking Finish is not Applicable:
Baking finish conducted on assembled slide
10
and leaf spring
11
would cause the leaf spring
11
to stick to the slide
10
and lose its designed elasticity, too. And, paint on the slide
10
might be scraped off by the leaf spring
11
when assembling the latter to the slide
10
, if the slide
10
and the leaf spring
11
are separately baking-finished.
3. Automated Connection of Slide to Zipper Tapes is not Possible:
The tab
12
automatically moves downward to lie flatly when the tab
12
is set to a certain angular position relative to the slide
10
as shown in FIG.
3
. This prevents the tab
12
from being well clamped by tools in the automated operation of connecting the slide
10
to zipper tapes.
The above-described conventional zipper slide with tab-restraining means requires high manufacturing cost and is therefore suited for use only on expensive clothes or articles. For less expensive clothes and articles, a zipper slide
20
without tab-restraining means as that shown in
FIG. 4
is used. The sipper slide
20
can be manufactured at low cost, but its tab
21
could not be fixed in place and would swing with movements of a wearer.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a zipper slide with means for restraining a pull tab thereof from swinging. The sipper slide of the present invention has simple structure and can be manufactured at low cost to allow economical and practical use thereof.
The zipper slide of the present invention mainly includes a slide and a pull tab. The pull tab includes a tab portion and a U-shaped buckle connected to a rear end of the tab portion. The slide is formed of a central passage for the U-shaped buckle to extend therethrough and be fixed thereto. Means provided on the zipper slide of the present invention for restraining the tap portion from swinging include an elastic projection axially extended from the rear end of the tab portion and a hollow space formed at a top front of the slide for detachably receiving the elastic projection therein when the tab portion is in a flat position relative to the slide. When the tab portion is pivotally turned upward relative to the slide, the elastic projection is brought into contact with a front edge of the hollow space, and a further pull would deform the elastic projection to bring the same to move out of the hollow space for moving the slide forward or backward. And when the tab portion is pushed downward relative to the slide from a movable position, the elastic projection is deformed to slip into the hollow space again to restrain the pull tab from swinging relative to the slide.
REFERENCES:
patent: 2262188 (1941-11-01), Marinsky
patent: 2383197 (1945-08-01), Johnson
patent: 3899804 (1975-08-01), Kawashima
patent: 3955248 (1976-05-01), Akashi
patent: 4389758 (1983-06-01), Akashi
Brittain James R.
Liauh W. Wayne
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