Ykk Corporation

Yoshida Kogyo K.k.

Hiroshi Mizuno

Shunji Akashi

Hiroshi Yoshida

Kazuki Kuse

Yozo Okada

Tatsuo Ito

Yoshiyuki Horita

Susumu Ishii

Yasuharu Terada

Kiyoyasu Wake

In a slider of a slide fastener with an automatic locking mechanism, the slider comprises a slider body composed of upper and lower wings joined together at their front ends by a guide post, a cover-attaching lug located on an upper surface of the upper wing near a front opening of the slider body and having a longitudinal center groove, a recess formed in the bottom of the groove so as to sink into the guide post, a pair of stepped sections at a top of the lug, and a low wall section at a front of the lug, an S-shaped leaf spring having a resilient portion to be received in the groove, a protuberant portion at an end thereof to be placed on the stepped sections, a cover having at least one ridge-like projection, a number of small projections, which are provided at a center of an inner surface thereof respectively, and bent ridges formed at front and rear corners, in which the bent ridges are received in the groove so as to engaged in the a cover-attaching lug, a pair of protuberances and an axial protuberance of the protuberant portion abut with the bent ridges and the ridge-like projection, respectively, so that a locking pawl of the leaf spring can project into or out of the slider body. Thus, the leaf spring having a strong resiliency can be stably housed in the slider.

Slider of slide fastener with automatic locking mechanism

A slider for slide fasteners comprises a slider body having a pair of upper and lower wings connected at one end by a neck portion to define a guide channel, a pull tab having a pintle provided at its one end and an attaching lug or lugs provided on the upper surface of the upper wing for pivotally connecting the pintle of the pull tab to the slider body. The upper wing has a land provided on the upper surface of the upper wing and disposed around the attaching lug or lugs. Correspondingly, the pull tab has a recessed surface on each side and adjacent to the pintle for receiving the land when the pull tab rests flat on the upper surface of the upper wing.

Slider for slide fastener

In an automatic lock slide fastener slider, a slider body has on the upper surface of an upper wing a pull-tab attaching lug at is front end, an auxiliary lug at its rear end, and a guide projection between the attaching lug and a locking-pawl-insertion though-hole. The attaching lug has a central groove, a pair of transverse recesses and opposite side recesses. The auxiliary lug has a vertical groove and opposite side recesses. The guide projection has a central cutout contiguous to the through-hole. A locking leaf spring has at one end a resilient portion to be received in the central groove and the other end a locking pawl to be inserted in the though-hole. With a pintle of a pull tab between the attaching lug and the guide projection, a cover is mounted over the two lugs so as to hold the resilient-portion-side end of the leaf spring.

Automatic lock slider for slide fastener

In an auto-lock slider for a slide fastener, each of front and rear attachment lugs on a slider by has a provisional spring-holding ends in the form of a holding projection having in its top a V-shape groove, each lug having on opposite side surfaces a pair of guides and in its outer side base a pair of recesses. In assembly, a leaf spring having in its each end a cutout is placed on the two holding projections, whereupon these projections are clenched, by pressing, to provisionally hold the spring. At that time, a locking lever is supported on e slider body between the lugs to normally urge the locking lever to a slider locking position, and a pintle of a pull tab is disposed between the locking lever and the slider body for bringing the locking lever out of the slider locking position against the resilience of the leaf spring. Finally, the lugs, the spring, the pintle of the pull tab and part of the locking lever on the slider body are covered by a cover of which side walls are clenched against the four recesses of the lugs.

Auto-lock slider for slide fastener

Pull tab for a slide fastener

Slide fastener

Slide fastener slider

In a separable slide fastener, a separable bottom-end-stop assembly of synthetic resin is in the form of three-member structure composed of a first pin, a second pin and a box. The first pin has a locking portion. The box has first and second pin insertion bores separated by a central partition having a resilient locked portion engageable with the locking portion of the first pin. The box additionally has on the outer side of the first pin insertion bore a short side wall to be received in a cutout in a bottom end portion of one of opposite fastener stringers. Thus, the firm attachment of the box after sewing can be achieved.

Separable bottom-end-stop assembly of synthetic resin for slide fastener

A lock slider, for a slide fastener, includes an upper wing having an interior surface adapted to be in contact with a pair of fastener tapes, and a wedge-like ridge projecting from the interior surface of the upper wing and extending from a guide post toward a rear end of the upper wing for spreading open the respective closely abutting inner longitudinal edges of the fastener tapes. A tapering fore end portion and a rectangular stem of the ridge has a sharp edge. The upper wing further has, in its interior surface, a recessed portion extending around the fore end portion and the stem for for allowing the inner longitudinal tape edges to be displaced into the recessed portion when they are spread open by the ridge. An aperture for the passage of a locking pawl is formed in the upper wing at an intermediate portion of the ridge. By virtue of the combination of the ridge and the aperture, the abutting inner longitudinal tape edges are sufficiently spread open, and the locking pawl comes into locking engagement with the fastener elements inside the slider without interference with the tape edges.

Lock slider for slide fastener

In a slider for a slide fastener, front and rear attachment lugs are arranged on the upper surface of an upper wing of a slider body, each having a horizontal insertion hole and an arcuate guide surface contiguous to the insertion hole. A pull tab retaining bar has a length so as to bridge over the front and rear attachment lugs and has a pair of taper legs one on each end. For assembly, with a pintle of a pull tab placed between the two attachment lugs, the legs are forced into the insertion holes along the guide surfaces as they deform prastically, securing the pull tab retaining bar to the attachment lugs. Accordingly, the pull tab retaining bar can be attached to the slider body simply by pressing from the upper side, thus facilitating automatic assembling.

A lockable slider for a slide fastener is disclosed which essentially comprises a slider body having a conneting neck or diamond and including an upper and a lower wing member defining therebetween a guide channel for the passage of slide fastener stringers and a locking member resiliently supported within the slider body. A switching means including a cam is provided for alternately locking and unlocking the slider with respect to the slide fastener, the cam being engageable with the locking member to move its locking prong portion away from the guide channel.

Lockable slider for a slide fastener

A method of and apparatus for manufacturing slide fasteners of selected product lengths from an elongate continuous stringer chain, the method comprising selecting predetermined fastener component parts from among a plurality of such respective component parts which differ in type, form, material and color, feeding and applying the selected parts one at a time to the stringer chain. The apparatus reducing the method to practice comprises operating units arranged to selectively feed and apply the component parts under computer program control.

Growing community of inventors

Toyama, Japan

Hiroshi Mizuno