Yoshida Kogyo K.k.

Yoshida Koygyo K.k.

Yoshinori Fujisaki

Naoki Kondo

Sakae Aimono

Kazuo Ida

A concealed slide fastener top and stop is formed by wrapping around a edge of a fastener tape with a U-shaped piece of synthetic resin and fusing the U-shaped pieces. The U-shaped piece is fused at its open ends through the fastener tape. The fused-through portion is shifted inwardly from a tape folded-in part, to which a row of fastener elements is attached. The fused-through portion is at an angle different from that of the fastener elements.

Method of forming coupling head portions in production of slide fastener

Slide fastener elements made of a helically wound synthetic resin monofilament and the method of forming the same. According to a preferred embodiment, each fastener element comprises an interengaging head arranged on one-line in the longitudinal direction of the slide fastener elements, a pair of interengaging head-side widened portions formed at the both sides of the interengaging head, upper and lower legs extending from the both ends of the interengaging head through the pair of interengaging head-side widened portions respectively so as to transverse the longitudinal direction of the slide fastener elements and a turn extending between an upper leg of one slide fastener element and a lower leg of an adjacent slide fastener element through a pair of connecting portions formed at the both sides of the turn. The interengaging head is formed by pressing the monofilament to be sidened at its portion corresponding to the interengaging head. The interengaging head-side widened portions and the connecting portions are formed by pressing the monofilament to be widened adjacent to the head and the turn respectively and used as the bending portions of the monofilament into the slide fastener elements made of the helically wound monofilament.

Slide fastener elements made of helically wound monofilament and method

A separable slide fastener has a separable end assembly attached to reinforced bottom end portions of a pair of stringer tapes, and a pair of grip tabs each secured to the reinforced bottom end portions of the respective stringer tape and adapted to manipulate the separable end assembly. The grip tab has an inner longitudinal portion disposed adjacent to but spaced from the separable end assembly by a predetermined spacing.

Separable slide fastener

A slide fastener 10 includes an end stop which is made of a thermoplastic material and allowed on melting by ultrasonic or high-frequency fusion to permeate yarns of fastener tapes, penetrate the interstices or openings in the tapes and fuse together at the confronting ends of the end stop with the tape sandwiched therebetween thereby firmly anchoring the same in place against movement even under increased stresses.

Slide fastener with thermoplastic end stops

A pair of assembled slide fastener stringers each have a stringer tape and a row of interlocking elements mounted on and along one edge of the stringer tape. A plurality of sliders are slidably mounted on the rows of interlocking elements, each slider having a head at which the element rows go into and out of the slider in the uncoupled state, and a rear at which the element rows go into and out of the slider in the coupled state. A plurality of bottom end stops are also slidably mounted on the element rows, each bottom end stop having a slider-like structure comprising a head at which the element rows go into and out of the bottom end stop in the uncoupled state, and a rear at which the element rows go into and out of the bottom end stop in the coupled state. The sliders alternate with the bottom end stops and have their heads directed in one direction and toward the heads of the bottom end stops. Alternatively, the sliders are provided in pairs lying head-to-head, and the bottom end stops are also in pairs lying head-to-head, the slider pairs alternating with the end stop pairs.

Growing community of inventors

Toyama, Japan

Yoshinori Fujisaki