Information
-
Patent Grant
-
6701585
-
Patent Number
6,701,585
-
Date Filed
Wednesday, July 31, 200221 years ago
-
Date Issued
Tuesday, March 9, 200420 years ago
-
Inventors
-
-
Examiners
- Knight; Anthony
- Jackson; André L.
-
CPC
-
US Classifications
Field of Search
US
- 024 436
- 024 433
- 024 435
- 024 432
- 024 427
- 024 434
- 024 415
- 024 418
- 024 419
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International Classifications
-
Abstract
A stop device for upper stops and a pull of a Nylon zipper has an upper stop formed by a left stop and a right stop; a pull being installed on one end of a zipper strip. The upper end surfaces and the bottom of the left stop and right stop are formed with protruded stop blocks, and the pull has a left and a right teeth channel, tops or bottoms of a respective teeth channel are formed with stop grooves. When the left stop and right stop enter into the two teeth channels of the pull, the left stop and right stop enter into the stop grooves. Since the stop blocks are resisted against the stop grooves, the left stop and right stop are buckled in the pull. Moreover, the left stop and right stop have the function of preventing the pull from separating from the zipper strips.
Description
FIELD OF THE INVENTION
The present invention relates to zipper elements, and particularly to stop device for upper stops and a pull of a Nylon zipper.
BACKGROUND OF THE INVENTION
A zipper with an upper stop is disclosed. In that, the upper stop is formed by a left stop and a right stop which are formed at an upper end and interior of the zipper teeth. The stops are rectangular and has a U-like cross sections. The left stop and right stop can enter into the two upper teeth channels of a pull of the zipper and are engaged with the engaged zipper teeth to be arranged as a Y shape. The defect of this prior art is that the pull is easily separated from the left stop and right stop automatically.
Thereby, the inventor of the present invention discloses a zipper in which stop blocks are protruded from tops or bottoms of the upper stops for resisting the pull so that the pull can not separate from the left stop and right stop. But in this prior art, the stops are placed out of the pull (i.e., can not enter into the upper teeth channels of the pull) and the stops are too sharp so that it is possible to hurt people. Moreover, the stop is used in steel zippers instead of Nylon zippers.
No positioning pin is used in mold-injecting the bottoms of the stops, the thickness of the stops are not uniform, because no positioning pin is used to support the zipper strips, the melt plastic can not flow into the bottom of the stops. Thereby, the effect of the product is bad.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide a stop device for upper stops and a pull of a Nylon zipper has an upper stop formed by a left stop and a right stop; a pull being installed on one end of a zipper strip. The upper end surfaces and the bottom of the left stop and right stop are formed with protruded stop blocks, and the pull as a left and a right teeth channels tops or bottoms of which are formed with stop grooves. When the left stop and right stop enter into the two upper teeth channels of the pull, the left stop and right stop enter into the stop grooves. Since the stop blocks are resisted by the stop grooves, the left stop and right stop are buckled in the pull. Moreover, the left stop and right stop have the function of preventing the pull from separating from the zipper strips.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is an exploded schematic view showing the upper stops and pull of the zipper according to the present invention.
FIG. 2
is a cross sectional view showing the assembled upper stop and pull in FIG.
1
.
FIG. 3
is an exploded schematic view showing the upper stop and the pull in another embodiment of the present invention.
FIG. 4
is a perspective view showing that the upper stop is used with pull of FIG.
3
.
FIG. 5
is an elevational view showing that the upper stop is coupled to the pull of FIG.
3
.
FIG. 6
is an exploded schematic view showing the zipper and the pull in another embodiment of the present invention.
FIG. 7
is an exploded perspective view showing the upper stop and the pull in a further embodiment of the present invention.
FIGS. 8A
to
8
C is a schematic view showing the embodiment of the upper stop of the zipper of the invention.
FIG. 9
is a bottom view about the upper stop and lower stop of the present invention.
FIG. 10
is a cross sectional view showing that the upper stop, lower stop of the zipper are combined.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to
FIG. 1
, an exploded perspective view of the upper stop and pull of the present invention is illustrated.
FIG. 2
shows the assembled view of the upper stop and the pull. It is illustrated that the upper stop is formed by a left stop
11
and a right stop
12
. Each of the left stop
11
and right stop
12
is formed by a long stop and a short stop and is positioned at upper ends of the two banks of the zipper teeth
18
and an inner lateral side of the two zipper strips
10
. Each of the left stop
11
and right stop
12
has a slit
13
and a through hole
15
for receiving seamed lines
14
(referring to FIGS.
2
and
4
). The slit
13
and through hole
15
are formed after the upper stop is formed by injection.
The feature of the present invention is that the upper end surfaces and the bottom of the left stop
11
and right stop
12
are formed with protruded stop blocks
16
. Respectively, the pull
20
has a left and a right teeth channel
21
the top or bottom of a respective teeth channel are installed with stop grooves
22
. The stop blocks
16
and the stop grooves
22
are engageable. An opening of each stop grooves
22
extends into an interior of the teeth channels.
Another feature of the present invention is that the upper edges of lower elements of the left stop
11
and right stop
12
are chamfered to have tilt guide surfaces
51
, preferable, they are chamfered with a 45 degree angles. When the left stop
11
and right stop
12
are guided into the pull
20
, they will not be buckled with the middle isolating blocks, teeth channels
21
and stop grooves
22
, etc. Thereby, the left stop
11
and right stop
12
are easily guided into the pull
20
. Since the tilt guide surface is not found in the prior art upper stop (including steel zippers or nylon zippers). Thereby, when the two stops are guided into the pull
20
obliquely, they are buckled and resisted by the pull. This will make the user's feel uneasy. If the zipper is used for a longer time, it easily damages.
Referring to
FIG. 3
, the left stop
11
and right stop
12
are formed with buckles
17
. The buckles
17
and the stop blocks
16
have dual effects of stopping. The buckles
17
resist against the two lateral walls of the upper teeth channels
21
(referring to FIG.
5
and the stop blocks
16
resist against the stop grooves
22
).
Referring to
FIGS. 4 and 5
, the buckle
17
has been used in the prior art and thus the details thereof will not be further described herein. After the left stop
11
and right stop
12
enter into the two upper teeth channels
21
of the pull
20
, the stop blocks
16
enter into the stop grooves
22
. Since the stop blocks
16
are resisted by the stop grooves
22
, the left stop
11
and right stop
12
are positioned and buckled to the upper teeth channels
21
and thus can not further enter into the pull
20
. Moreover, the pull
20
resists by the stop blocks
16
of the left stop
11
and right stop
12
and can not separate from the upper stop.
Referring to
FIGS. 6 and 7
, two further embodiments of the present invention are illustrated. In
FIG. 6
, other than the buckles
17
, the tops of the left stop
11
and right stop
12
have stop blocks
16
which have rectangular shapes. The tops of the upper teeth channels
21
have stop grooves
22
. In
FIG. 7
, the left stop
11
and right stop
12
have stopping elements and bottoms thereof have stop blocks
16
. The bottoms of the upper teeth channels
21
have stop grooves
22
for matching the stop blocks
16
.
In above example, the sizes of the stop blocks
16
and stop grooves
22
are approximately identical. But two features must be taken care in design. With reference to
FIGS. 8A
to
8
C, an inner lateral sides
16
b
of stop blocks
16
are straight or tilt. If they are straight, see
FIG. 8A
, a gap
31
is formed with the inner lateral side of the stop. If it is tilt, see
FIG. 8C
, the stop blocks
16
have an angle θ°
32
with the inner side of the stops. The gap
31
and tilt angle
32
casue the upper stop to displace into the stop grooves
22
when the upper stop is guided into the pull
20
. If no gap or tilt angle is formed, the stop blocks
16
easily touch the front edge of the pull
20
and the middle isolating block. Moreover, the lengths
33
of the stop blocks
16
and buckles
17
are preferably identical. That is, the lower edge
16
a
of the stop block
16
a
is flushed with the lower edge
17
a
of the buckle
17
. Thereby, they can be resisted by the outer wall and stop groove of the pull
20
. Thereby, the upper stop suffers from a uniform force. In
FIG. 8C
, the stop blocks
16
are flushed with the buckles
17
so that the stop blocks
16
have larger area.
Referring to
FIG. 9
, the bottom views of the upper and lower stops are illustrated. It is illustrated that the left stop
11
and right stop
12
of the upper stops have a U-like shape. The lower stop
40
has an H-like shape. The left and right sides of the lower stop
40
have slits
42
for clamping the zipper strips. The bottoms of the left stop
11
, right stop
12
and lower stop
40
have at least one positioning holes
19
,
41
. When the left stop
11
, right stop
12
and lower stop
40
are formed by mold-injection, the zipper strips are installed with positioning pins (not shown) for forming the positioning holes. The positioning holes are used to support the zipper strips
10
. Thereby, the plastic material can flow into the bottoms of the zipper strip so as to form the bottoms of the stops. Otherwise, the bottom with a width of 0.5 mm will have non-uniform thickness since the width of the bottom is approximately 0.5 mm. The positioning pins are not used in the prior art molding injection technology. Thereby, the bottoms of the upper stop and lower upper stop are not uniform so that they easily crack.
Referring to
FIG. 10
, the cross sectional views showing that the left stop
11
, right stop
12
and lower stop
40
are combined with the zipper strip
10
. The positioning holes
19
,
41
are formed from the bottoms to the zipper strips. After the positioning holes are formed, the strain can be removed when the thermal setting plastics is formed. Thereby, the strains due to the material and temperature differences of the zipper strip are released and the plastic stops can be released. The design of the positioning holes is not used in the prior art.
The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims
- 1. A stop device for upper stops and a pull of a Nylon zipper; the upper stop being formed by a left stop and a right stop; a pull being installed on one end of a zipper strip; characterized in that:upper end surfaces and the bottom of the left stop and right stop being formed with protruded stop blocks, and the pull has a left and a right teeth channel, tops or bottoms of a respective teeth channel are formed with stop grooves; the stop blocks and the stop grooves are engageable; wherein when the left stop and right stop enter into the left and right teeth channels of the pull, the left stop and right stop enter into the stop grooves; since the stop blocks are resisted by the stop grooves, the left stop and right stop are buckled in the pull; and, the left stop and right stop have the function of preventing the pull from separating from the zipper strips.
- 2. The stop device for upper stops and a pull of a Nylon zipper as claimed in claim 1, wherein an outer lateral side of the left stop and right stop are formed with respective buckles for resisting against the pull.
- 3. The stop device for upper stops and a pull of a Nylon zipper as claimed in claim 1, wherein one side of each stop block is straight and reduced from a corresponding side of a corresponding left stop and right stop.
- 4. The stop device for upper stops and a pull of a Nylon zipper as claimed in claim 1, wherein one side of each stop block is tilt and reduced from a corresponding side of a corresponding left stop and right stop.
- 5. The stop device for upper stops and a pull of a Nylon zipper as claimed in claim 1, wherein a length of each stop block is equal to a length of each buckle.
US Referenced Citations (3)