Buckles – buttons – clasps – etc. – Zipper or required component thereof – Including complementary – aligning means attached to ends of...
Reexamination Certificate
1999-09-15
2001-03-06
Brittain, James R. (Department: 3626)
Buckles, buttons, clasps, etc.
Zipper or required component thereof
Including complementary, aligning means attached to ends of...
Reexamination Certificate
active
06195852
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an open type of slide fastener which can immediately double as a slide fastener having a bottom end stop for upward opening or as a slide fastener having a bottom end stop for both-way opening by using a box or a slider for reverse opening in a bottom end stop of a slide fastener.
2. Description of the Related Art
As this type of conventional open type of slide fastener, there is a reversely openable bottom end stop as disclosed in Japanese Utility Model Publication No.
55-44494
, wherein reinforcing plates
108
made of plastic are formed at end portions of left and right fastener stringers
101
, a box pin and a separable pin
104
are respectively mounted to side ends of the reinforcing plates
108
, a protuberant portion
130
is formed on an upper face of the box pin
103
, a projection is formed at a lower end of the protuberant portion
130
, a rectangular fitting recessed portion
133
is formed on the reinforcing plate
108
on a side of the box pin
103
, a partitioning plate
132
is formed at a side face of a box
118
and fitted in the fitting recessed portion
133
of the reinforcing plate
108
, a recess stepped portion
131
is formed at an outer end of a back face of an upper plate of the box
118
, and the projection formed at the lower end of the box pin
103
is fitted in the recess stepped portion
131
, thus fixing the box pin
103
and the box
118
, for example, as shown in FIG.
11
.
Furthermore, there is a bottom end stop for reverse opening and made of thermoplastic resin as disclosed in Japanese Utility Model Publication No.
61-44647
, wherein a stopper
7
′ projecting in an L shape is integrally molded with an end portion of an outer side edge portion
25
′ at a side of a box pin
3
′ such that a tip end of a flange
17
′ of a slider for reverse opening
16
′ can abut on the stopper
7
′, as shown in FIG.
12
.
In the reversely openable bottom end stop described above and shown in
FIG. 11
, the box pin
103
and the box
118
of the bottom end stop are fixed to each other by fitting the lower end of the partitioning plate
132
formed on the side face of the box
118
in the fitting recessed portion
133
formed on the reinforcing plate
108
on the side of the box pin
103
and by fitting the projection formed on the upper face of the box pin
103
in the recess stepped portion
131
formed on the back face of the upper plate of the box
118
. However, because a fixing mechanism is merely fitting means, the fixing mechanism is unstable and may be broken under rough use. When the bottom end stop is used as the bottom end stop for reverse opening, a slider used for reverse opening has to be a specific slider defined at a back face of an upper wing plate of the slider with the recess stepped portion to be fitted over the projection formed on the upper face of the box pin. Therefore, when the bottom end stop is applied to a reverse-opening type of product, a slider of the same type as a normal slider, i.e., a slider for upward opening can not be used.
Next, because the bottom end stop shown in
FIG. 12
is intended for reverse opening, the bottom end stop can not immediately respond to the bottom end stop to which the box
118
is attached. Moreover, because the outer side edge portions
25
′ on the sides of the box pin
3
′ and a separable pin
4
′ are flat, it is difficult to hold the fastener chain in a bottom end stop operation and a smooth operation can not be expected.
SUMMARY OF THE INVENTION
The present invention has been accomplished with the above-described problems in view and it is a main object of the invention to provide a reversely openable bottom end stop of a slide fastener wherein a both-way opening type of slide fastener and an upward opening type of slide fastener can be supplied in immediate response to demand. In each of the slide fasteners, a portion of a fastener chain where the bottom end stop is disposed can be easily held, reverse opening operation or bottom end stop operation can be carried out smoothly, and the slider for reverse opening can be stopped properly.
An object of the invention is to provide a reversely openable bottom end stop of a slide fastener, wherein the slider for reverse opening reliably guides the bottom end stop at an end of the fastener chain in a closing direction, i.e. sideways, a stopping function of the slider for reverse opening is improved, and an end portion has favorable appearance.
Another object of the invention is to provide a reversely openable bottom end stop of a slide fastener having guide portions which are for smooth sliding of the slider for reverse opening and do not hinder mounting of the box.
An object of the invention is to provide a reversely openable bottom end stop of a slide fastener, wherein mounting operation of a box is facilitated such that the box can be easily inserted into the box pin and a stopping function of the slider for reverse opening is not hindered.
The invention has an object to provide a reversely openable bottom end stop, wherein a portion of a fastener chain to which the bottom end stop is mounted is reinforced, the end portion of the fastener chain can be easily held, a smooth bottom end stop operation can be carried out, and the bottom end stop is suitable to a slide fastener of a type wherein a fastener element is mounted to one face of the fastener tape.
It is an object of the invention to provide a reversely openable bottom end stop, wherein a portion of a fastener chain to which the bottom end stop is mounted is reinforced, the end portion of the fastener chain can be easily held, a smooth bottom end stop operation can be carried out, and the bottom end stop is suitable to a slide fastener of a type wherein a fastener element is mounted to project from opposite faces of each the fastener tape.
Another object of the invention is to provide a slide fastener mounted with a bottom end stop, wherein the box is firmly fixed to an end portion of a fastener stringer.
It is an object of the invention to provide a slide fastener mounted with a bottom end stop, wherein the slider for reverse opening and the slider for upward opening are employed.
To achieve the above objects, according to the first aspect of the invention, there is provided a reversely openable bottom end stop of a slide fastener, wherein a box pin
3
and a separable pin
4
are respectively molded on end portions of fastener stringers
1
,
1
by injection molding or extrusion means by using thermoplastic resin, thin guide portions
5
are respectively and integrally molded at sides of the box pin
3
and the separable pin
4
, projecting reinforcing streak portions
6
are integrally molded at sides of the guide portions
5
, and a stopper
7
extending from a tip end of the box pin
3
to a tip end of the reinforcing streak portion
6
and is integrally molded on an upper face of the guide portion
5
.
Preferably, the stopper
7
laterally formed between the box pin
3
and the reinforcing streak portion
6
is in a V shape and projecting higher than the reinforcing streak portion
6
, and the reinforcing streak portion
6
is integrally molded to project from both front and back surfaces of a fastener tape
2
.
Further preferably, the thin guide portions
5
formed at the sides of the box pin
3
and the separable pin
4
are integrally molded between the box pin
3
and the reinforcing streak portion
6
and between the separable pin
4
and the reinforcing streak portion
6
to have such widths that at least flanges
17
of a slider
16
can slide in the guide portions
5
.
Still preferably, the stopper
7
laterally formed between the box pin
3
and the reinforcing streak portion
6
is defined at an intermediate portion of the stopper
7
with a stepped portion
10
and projects higher on a reinforcing streak portion
6
side and lower on a box pin
3
side.
Yet preferably, reinforcing portions
8
are formed by welding thermoplastic resin fi
Brittain James R.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
YKK Corporation
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