Three tape type zipper is disclosed which comprises first to third tapes, a first slider for fastening the first and second tapes and a second slider for fastening the first and third tapes. One end of the first tape and one end of the second tape are connected to each other and one end of the third tape and the other end of the first tape are connected to each other so that the first tape serves as a common counterpart to the second and third tapes. The other ends of the second and third tapes are kept free.
The first and second tapes are fastened together by moving the first slider toward the second slider, whereas the first and third tapes are fastened together by moving the second slider toward the first slider.A bag-shaped article with the three-tape type zipper secured thereto is also disclosed which comprises a body with an opening formed thereon through which things are inserted. The first tape is attached to one of the hems defining the opening, the second tape is to the other hem and the third tape is to the body at the position located distant from the other hem. The first holding capacity is established by fastening the first and second tapes and the second holding capacity smaller than the former is established by fastening the first and third tapes.As has been described hitherto, this invention will greatly contribute to compactization, material- and cost-saving of commodities.
Hence, the present invention is intended to obviate the problems as described above with respect to conventional bags or bag-shaped articles with zippers secured thereto.
It is one object of the present invention to provide a three-tape type zipper which can be used conveniently in bags or bag-shaped articles which require two different holding capacities.It is another object of the present invention to provide a three-tape type zipper which is simple in design and can be manufactured inexpensively.It is another object of the present invention to provide a bag-shaped article with the three-tape type zipper secured thereto which can be used to create one of two different holding capacities depending on the size and/or number of items to becontained therein.It is still another object of the present invention to provide a bag-shaped article with the three-tape type zipper secured thereto which can be easily handled by anyone and is light in weight.
To accomplish these objects there is proposed in accordance with the present invention a three-tape type zipper comprised of a combination of: a first tape with a number of equally spaced elements fixed to one of the edges thereof confronting tothe other two tapes, one end part of said first tape being connected to one end part of a second tape and the other end part of the same being connected to one end part of a third tape; a second tape with a number of equally spaced elements fixed to oneof the edges thereof at a position located opposite to those on said edge of the first tape so that both tapes may be fastened, one end part of said second tape being connected to said one end part of the first tape and the other end part of the samebeing left free.
A third tape with a number of equally spaced elements fixed to one of the edges thereof at a position located opposite to those on said one edge of the first tape so that both tapes may be fastened, one end part of said third tape beingconnected to said other end part of the first tape and the other end part of the same being left free; a first slider serving to fasten the first and second tapes together by moving the slider with a tab attached thereon from the first end portion whereone end part of the first tape is connected to one end part of the second tape to the second end portion where the other end part of the first tape and the one end part of the third tape are connected to each other, said moving the first slider beingperformed by pulling a tab attached thereon until the first slider comes close to the stopper connecting one end of the third tape and the other end of the first tape; and a second slider serving to fasten the first and third tapes together by moving theslider from the aforesaid second end portion to the aforesaid first end portion with a tab attached thereon until the second slider comes close to the stopper connecting one end parts of the first and second tapes.
The fastening operation is carried out by employing one of two sliders while the unemployed one is kept suspended. After completion of the fastening operation the employed slider should be preferably locked in the conventional manner.
The elements on the first to third tapes are made of synthetic resin such as nylon, polyester, polyacetal or the like material.
Further, according to another aspect of the present invention there is proposed a bag-shaped article with the three-tape type zipper secured thereto to create two different holding capacities comprised of a body having an ellipsoidal cubicconfiguration, a longitudinal opening formed on said body through which items are inserted and the aforesaid three-tape type zipper including the first to third tapes secured to said body in such a manner that the first tape is attached to one of thehems defining said opening, the second tape is attached to the other hem located opposite to said one hem and the third tape is attached to the body at a position located distant from said other hem whereby the first holding capacity is established byfastening the first and second tapes and the second holding capacity smaller than said first one is established by fastening the first and third tapes.
As will be apparent from the above description, a characteristic feature of the zipper consists in that the first tape 2 is a common counterpart to the second and third tapes 3 and 4 and the first and second sliders 5 and 6 are separatelyoperated, that is, when the first slider 5 is operated, the second slider 6 is kept suspended, whereas when the second slider 6 is operated, the first slider 5 is kept suspended. |
