The present patent application is a non-provisional application of International Application No. PCT/FR2004/001114, filed May 7, 2004.
1. Field of the Invention
The present invention relates to the field of bags comprising closure devices actuated by a cursor.
2. Description of Related Art
Many devices of this type have already been proposed.
Bag closure devices usually comprise two complementary male/female type shaped elements or complementary hook type elements designed to allow multiple successive openings/closures.
The purpose of the cursor is to make the respective engagement and separation of the profiled elements easier.
The appended
As can be seen in these figures, the cursor 100 usually comprises a base 110 which supports two side plates 120, 130 and a central wall 140. The plates 120, 130 and the wall 140 together define two channels 150, 160 at least partly nonparallel. These channels receive respective elements connected to the two profiled elements 200, 250.
The known cursors have already done great service. They make it easier to open and close bags since it is sufficient to move the cursor, according to the direction of movement thereof, in order to separate or engage the profiled elements due to the fact that the channels 150, 160 are not parallel.
However, the bags thus fitted have a serious disadvantage: it is noted that the cursors are sometimes torn off and particularly there is a risk of swallowing by children.
To try to reduce this risk, it has already been proposed, as shown in the appended figures, to place on the free edges of the plates 120, 130, longitudinal ribs 122, 132 intended to position themselves beneath the profiled elements. However, this measure is insufficient. In the event of a powerful force being applied to the cursor, the plates 120, 130 are separated and the cursor torn off.
As illustrated in
The object of the present invention is to enhance the known devices while limiting the risk of the cursor being-torn off.
This object is achieved in the context of the present invention thanks to a closure kit comprising two complementary elements capable of being successively engaged and separated, and a cursor comprising a base, two side plates, a central wall and a sole connected to the central wall, characterized in that at least one of the two elements has a structure that is concave toward the inside of the bag forming a stop for the sole to prevent the cursor being pulled off under the effect of a tearing action.
The present invention also relates to bags fitted with such a closure kit.
Other features, objects and advantages of the present invention will appear on reading the-detailed description that follows, with respect to the appended drawings which are given as nonlimiting examples and in which:
The present invention may find application in any type of bag. For this reason, the description that follows will not give details of the means of producing the bag itself, or of its or their constituent materials.
The same will apply for the closure profiled elements 200, 250. They are not limited to the geometry represented in the appended figures. These profiled elements may be of the complementary male/female type, of the complementary hook type, of the complementary hook/loop fabric type, or any other equivalent structure. They may be made of any appropriate material. The closure profiled elements 200, 250 may be made of the same material as the walls of the bag, for example extruded or fitted and attached to the walls of the bag by any appropriate means.
Similarly, the general structure of the cursor 100 and its constituent material will not be described in detail hereinafter. Particular attention will be paid to describing the essential feature of the invention.
The cursor 100 may be made of metal or plastic. It comprises a base 110, two side plates 120, 130 and a central wall 140 which supports a sole 142. The side plates 120, 130 and the central wall 140 together define two channels 150, 160 at least partly nonparallel.
As previously indicated, according to the invention, at least one of the two complementary elements 200, 250 of the closure kit has a structure 210 forming a stop for the sole 142.
Preferably, in the context of the invention, this structure 210 forming a stop:
Those skilled in the art will understand that if there is an attempt to tear off the cursor, the sole 142 butts against the structure 210 and prevents the cursor from being pulled off.
Those skilled in the art will understand that this arrangement enhances security. Specifically, any tearing force exerted on the cursor 100 tends to bring the closure profiled elements 200, 250 closer together and not separate the latter.
Finally,
Naturally, the present invention is not limited to the particular embodiments that have just been described but extends to any variant complying with the spirit thereof.
Number | Date | Country | Kind |
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03 05988 | May 2003 | FR | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/FR2004/001114 | 5/7/2004 | WO | 00 | 11/17/2005 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2004/103842 | 12/2/2004 | WO | A |
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