FI57531B - BLIXTLAOS - Google Patents

Description

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Patent fneddelat V v y (51) Kv.ik.3 / Int.ci.3 A 44 B 19/36 FINLAND —FINLAND (21) P »t * nttlh * k * mu * - P» tent »n * öknln | 1091/72 (22) Haktmlipiivl - Ar »öknlng * d» g 18.01 + .72 (23) Alkupllvt — Glltlgh «tsd * g l8.0U.72 (41) Tullut JulklMktl - Bllvlt affwitllg 21.10.72

Patented and registered by NihtivUciptnon j. kuui, | uik .. «. n pvm.-

Patent · och registrerttyrelten '' Ansttkan utitgd oeh uti. * Krlft * n pubii «r» d 30.05.80 (32) (33) (31) Pyydetty etuolkau * - Begird prlorltat 20.0U. 71

Japan-Japan (JP) 1 + 6-30709 (71) Yoshida Kogyo Kabushiki Kaisha, 1, Kanda Izumi-cho, Chiyoda-ku,

Tokyo, Japan-Japan (JP) (72) Akiyoshi Kandou, Uozu-shi, Toyama-ken, Japan-Japan (JP) (7U) Ruska & Co.

(5U) The present invention relates to a zipper having two support straps having a row of plastic closure members at opposite edges cooperating with a slide with side flanges contacting the closure members, and wherein the movement of the slide is limited by an end stop, with a plastic arch attached to the closure members.

Hitherto, many different types of end stops are known which restrict the reciprocating movements of the slider along the rows of closure members when opening and closing the zipper. Such end stops are commonly referred to as top or bottom end stops, depending on their position in the zipper.

It is an object of the present invention to provide a zipper top stop which is suitable for use in zippers having interlocking closure members made of plastic yarns.

Zipper top end stops are previously known which are made of metal and are U-shaped or ring-shaped and which are adapted to surround the edge of each fastening strip, in contact with a few end closure members. The disadvantage of such end stops is that they tend to come loose when they are repeatedly touched by a slider. In addition, because these metal end stops are exposed when touching the wearer's skin, they give the wearer an uncomfortable feeling.

Recent improvements include a plastic strip attached to the arms of the closure members at the upper end of the row of closure members so that the tape protrudes to the side of the base of the closure members. The disadvantage of this type of top end stopper is that it has a short service life because the protruding end of the strip, which often has burrs in the strip, tends to wear or detach easily from the zipper due to repeated pushes of the shoulders of the slider. In addition, such a strip of burrs often adheres to the fabric of the garment and even to the wearer's skin.

The object of the present invention is to substantially eliminate the above-mentioned drawbacks and to provide a better limiter than previously known for a zipper having two rows of closure members made of plastic yarns.

The invention will become more apparent from the following description and the accompanying drawing, in which Figure 1 shows, seen from above and partially cut to size, important parts of a zipper according to the invention, and Figure 2 shows a section taken along line A-A in Figure 1.

For the sake of clarity, the invention will be explained with reference to an embodiment in which its principles have been applied to the so-called hidden zipper shown in Figure 1. The zipper 10 comprises two opposite straps 11, 12, each of which supports the gripping or closing members E of a row of folded edges. These are made of a plastic thread formed in a known manner into a helix, each closing member having a coupling head 14, branches 15 and base part 16. As can be seen, a row of these helical members E is fastened with two-wire chain stitches S to a stiffening strip 17 »located on the folded edge 13 of the strip 11.

Reference numeral 18 denotes a stop or end stop according to the present invention, which is adapted as an upper end stop to limit the upward movement of the slider 19. This stop 18 is made of plastic that can be fused together with the closure members E. It is important that the stop has a curved surface 20 projecting from the base of the closure members E into contact with the slide 19

Claims (2)

For 3,57531. In particular, the curved surface 20, which is preferably circular in cross-section, forms a smooth contact surface for contact with the inner side wall portion 21 of the side flange 24 of the slider 19, so that the stop 18 remains stable relative to the slide, as shown in Figure 1. result is kept to a minimum. Another important feature of the present invention is that both ends 22 of the end stop 18 are located between adjacent closure members E and are firmly secured in place by ultrasonic fusion with the closure members E at 25, whereby the free surface 20 'of the arc 20 will be approximately flush with the row of closure members E. , as can be seen in Figure 2. In this way, a firm grip of the end stop 18 with respect to the closure members is ensured, so that it cannot be detached or released due to repeated impulses caused by the slider, as has been the case with similar devices known before. In addition, it should be noted that the end stop 18 arranged as described above will act as a guide for bringing the end portion of the closure members, if desired, substantially parallel to the side walls of the diamond-shaped portion 23 of the slider 19. It is further preferred that the end stop 18, which is located substantially flush with the plane of the row formed by the closure members E, also allows the ordinary presser foot to slide along the zipper. Although the invention has been illustrated as applied above to one of the two opposing strips, it is quite obvious that the invention can in practice be applied in the same way to both strips. Of course, the invention is not limited to the embodiment described above, but many variations are possible within the scope of the claims. A zipper having two support straps (11, 12) having a row of plastic closure members (E) at opposite edges (13) cooperating with a slide (19) provided with side flanges (24) in contact with the closure members, and wherein the movement of the skate is