Buckles – buttons – clasps – etc. – Zipper or required component thereof – Including complementary – aligning means attached to ends of...
Patent
1992-12-22
1994-08-02
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Zipper or required component thereof
Including complementary, aligning means attached to ends of...
24434, A44B 1900
Patent
active
053333624
DESCRIPTION:
BRIEF SUMMARY
The present invention is concerned with a lead-in device for a slide fastener, as well as with a slide fastener fitted with this device.
Zip fasteners are well known, which are also called zippers or slide fasteners. They are made of two strips with tabs along the edge of each strip, an end part fastened permanently to the end of one of the strips, which comprises a groove designed for receiving the leader of the other strip and finally a slider adapted permanently on the strip bearing the end part, to slide thereon.
To operate a fastener of this type, it is first necessary to enter the leader of the first strip into the opening of the slider and then to slide it until it enters the end part and abuts finally against its bottom.
The slider can then be pulled to ensure the interpenetration of the tabs of the strips.
One can note, that all the movements are carried out in one plane, i.e. the one to which both strips belong. Although the strips are generally flexible, one can picture this plane without difficulty.
Unless one if of an uncommon dexterity, one must use both hands to carry out the operation of leading-in a slide fastener. One hand guides the leader of the first strip inside the slider and the end part associated with the second strip, which are both held in the second hand.
The introduction of the leader inside the slider can sometimes be difficult, for example when one wears gloves or cannot make his two hands free at the same time.
The aim of the present invention is to provide a lead-in device which does not require the use of both hands.
To this end, the device according to the invention is such as set forth in claim 1.
The invention will be better understood from the following detailed description, given as a non limiting example, of two particular embodiments of the device according to the invention, with reference to the appended drawing, in which:
FIG. 1a is a perspective view of the end of the strip carrying the slider of a slide fastener, provided with the device of the invention, in accordance with a fist embodiment of this device;
FIG. 1b is a perspective view of the end of the strip provided with the leader designed for introduction into the opening of the slider, in accordance with the first embodiment of the device;
FIGS. 2a, 2b, 2c and 2d are top views illustrating the functioning of the lead-in device according to the invention;
FIGS. 3 and 4 are diagrammatic views of the slider of the slide fastener, in accordance with one particular embodiment of this slider:
FIG. 5a is a perspective view of the end of the strip provided with the leader designed for introduction into the opening of the slider, in accordance with a second particular embodiment of the device according to the invention;
FIG. 5b is a perspective view showing the configuration taken by the device according to the second embodiment thereof, after leading-in and initiating the closing, with a sliding guide member being placed in a retracted position;
FIG. 6 is a perspective view similar to FIG. 1a, showing another version of the device, which can be applied to one or the other of the two embodiments of this device illustrated in FIGS. 1a to 5a; and
FIG. 7 is a cross-sectional view of the device according to the embodiment shown in FIG. 5a, at a larger scale than in the latter figure and taken along the plane VII--VII indicated therein.
Before proceeding with the actual description, it should be specified that the version described is concerned with a fastener intended for a garment, such as a jacket or a blazer. The illustration given assumes that the slider is mounted on the left side of the blazer. Clearly, a simple inversion will not affect in any way the functioning of the device, so that the device can also be adapted to the case where the slider is borne by the strip of the fastener affixed to the other side.
Also, the figures are intended to illustrate as well as possible the device and the components useful for its functioning; the shapes and the proportions are therefore purely illustrative and are not intend
REFERENCES:
patent: 2039976 (1936-05-01), Norton
patent: 4078279 (1978-03-01), Heimberger
patent: 4221026 (1980-09-01), Kanzaka
patent: 4742603 (1988-05-01), Kasai
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