FI57204B - WHEEL BEARING - Google Patents

Description

RSFH M (11) KUUKLUTUSJULICA, SU ....

^ ETa l j; Ί1 'utläggningsskript 57204 ^ ^ (51) Kv.lk?/lr*t.a. ^ ^ ^ ® 19/3 * FINLAND —FINLAND (21) Ptttnttih «k.mw-P« tn «» i »öknin | 22 ^ 5/72 (22) Hikumlipllv * - Anaöknlnffdtf 15.08.72 (23) AlkupUvt — GlMghutidag 15.08.72 (41) Tullut JulklMlcsl - Blhrtt offmtll | ^ .9.02 73

The Patent and Construction Board (44) NihtivtUp ^ is j. month »and date

Patent- och registratyrelaen '' Amftkan utk «d och utUkriftm pubiictrad 31.03.80 (32) (33) (31) Prr <i« tty «tueikeu» —fagM prior ** 18.08.71

Japan-Japan (JP) U6-62750 (71) Yoshida Kogyo Kabushiki Kaisha, No. 1, Kanda, Izumi-cho, Chiyoda-ku,

Tokyo, Japan-Japan (JP) (72) Yoshio Matsuda, Toyama-ken, Japan-Japan (JP) (7 ^) Ruska & Co.

(5 ^) The present invention relates to a warp knitted support strip for zippers, in which the strip has loop shanks formed by warp loops, which are connected in the transverse direction by embedded weft yarns, and a thickened longitudinal edge for fastening the closure members.

Various types of warp-knitted support straps are used for use in zippers. However, mainly due to the coarse mesh fabric, the previously known knitted carrier strips have insufficient 'mechanical strength and shape or' directional stability 'compared to woven support strips, with the closure members attached to them tending to move out of position or detach from the support strip longitudinally. Although ordinary knitted support strips are able to support closure members sewn in place with sewing threads, they cannot satisfactorily support metal closure members that are not normally attached with sewing threads. The tendency of knitted support straps to stretch in both warp and weft directions has limited their use in zippers. In the past, many attempts have been made to reinforce the support strip against stretching, especially at its longitudinal edge. The sealing members are attached. However, none of these attempts has been shown to be completely satisfactory due to the high burdens caused by

The main object of the present invention is to provide a better knitted support strap for zippers than previously known, which support strap is able to hold the row of currently used closure members of any type and shape in the correct position. Such closure members include continuous helical or meandering closure members made of plastic and separate or discontinuous closure members made of metal. It is an object of the support strip according to the invention to hold such closure members in place so that they do not move or become detached from the longitudinal edge of the support strip due to the high stresses caused by the reciprocating slide.

The above objects are achieved by a base ribbon according to the invention, characterized mainly in that the thickened longitudinal edge has a core running along two rows of loops spaced apart at said longitudinal edge and secured between them by weft yarns which bind only said two loops.

The invention will become more apparent from the following description and the accompanying schematic drawing, which illustrates some preferred embodiments of the invention and in which Figure 1 shows an enlarged view of a part of a knitted support strip according to the invention, Figure 2 shows a second embodiment, Figure 3 shows a third embodiment, Fig. 5 shows a cross-section from Fig. 1 of a support strap used in a zipper with metal closures, Fig. 5 shows a cross-section of a support strap used in a zipper with kneeling closures, and Fig. 6 shows a cross-section of a support strap with zippers or a zipper.

3 $ 7204

The support strip T shown in Fig. 1 is a warp-knitted structure comprising rows of loops formed by warp loops, such as open column loops, connected by transversely embedded weft yarns 10, and a plurality of warp yarns 11 arranged between the rows of loops W to resist longitudinal stretching. According to the invention, it is important that the reinforcing core member 12 is adapted to run longitudinally along the inner longitudinal edge 13 of the support strip T between the first and second rows of loops W1 and W2. The core member 12 is held in place by weft yarns and is preferably made of spun yarns. The thickness of the core member is so great as to provide a thickened edge 13, as shown in Fig. 4. This edge is shape or parallel stable and is comparable to the bead edge of a conventional woven support strip.

^ In this case, the closure members made of metal can be firmly attached to this edge so that they remain securely in place without moving sideways due to the high stresses caused by the skate not shown.

In the embodiment according to FIG. to the thickened, reinforced longitudinal edge 13 of the support strip, as shown in Figures 5 and 6. More specifically, the stitches S pass through the core members 12 so as to prevent lateral movement of the support strip. This in turn ensures that the closure members remain in place when the zipper is opened and closed.

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Figure 3 shows an embodiment in which the knitting structure of the tricot loops 15 is connected to the chain loops 16. Both of these loops are connected by binding weft yarns 10 to a core member 12 between the loop wefts W1 and W2.

As can be seen from the above, the core member 12 increases the strength at the longitudinal edge 13 of the support strip T, which is preferably thickened so as to provide a firm attachment of the metal closure members. At the same time, the core member 12 receives and retains the om-play stitches S, so that they cannot move due to the slider-induced