Abstract: A separable slide fastener is disclosed which is provided with a separable end stop assembly comprising a pin member on one stringer and a socket member on the other stringer, both members being releasably interengageable to couple the stringers, and retaining means integral with said pin member retaining the latter in locked relation to said socket member during a starting movement of a slider.

Abstract: A separable slide fastener chain comprises a pair of oppositely disposed stringers of continuous length each having a support tape and a fastener element formed from a plastic monofilament into a continuous structure secured by sewn seams to a longitudinal inner edge of the respective tape. The fastener element is fused together over a predetermined length of the two coupled stringers at predetermined intervals. A composite pin-forming structure is located centrally of the fused length of the fastener element and cut out to produce a multi-form aperture having a pair of bay portions extending transversely of the fastener chain and oppositely disposed in point-symmetry relation and a pair of elongated canal portions extending longitudinally closely along the sewn seams. The composite structure is subdivisible across the bay portions into two identical pairs of slider-lock pin members and inserting pin members.

Abstract: An open end slide fastener comprises a pair of stringer tapes each carrying along one longitudinal edge a row of coupling elements and a pair of end stop lugs, each of the coupling elements including a pair of spaced legs and a coupling head extending therebetween. The coupling head has a pair of lateral projections extending longitudinally of the row of coupling elements beyond the width of the legs. The interengaged lateral projections of the coupling heads of the opposed endmost coupling elements located next to the top end stop lugs are cut off to permit the endmost coupling elements to be disengaged from each other when the fastener is closed. The legs of one endmost coupling element are partly cut off to define a slot extending transversely of the rows of coupling elements, permitting the endmost coupling elements to move unobstructedly toward and away from each other.

Abstract: A separable slide fastener comprises a pair of oppositely disposed stringers each having a support tape and a fastener element formed from a plastic monofilament into a continuous structure having coupling head portions, upper legs, lower legs and connecting heel portions and secured by sewn seams to a longitudinal inner edge of the respective tape, a reinforcing core extending through the coiled fastener element and a slider having a pair of branched guide channels defined between its flanges and diamond. A group of successive loops of the fastener element are fused together over a predetermined length at one end of the fastener and cut closely along the sewn seams to provide a pair of integrated pin members on the respective stringers. The group of fused loops on one stringer has a plurality of coupling head portions transferred from the other stringer.

Abstract: An open end type of slide fastener has an end stop comprising a pair of lugs formed from a plastic material and secured to the longitudinal edges of respective stringer tapes, each lug having an oblique inner edge extending divergently with respect to the longitudinal axis of the fastener such that the lugs define therebetween a substantially V-shaped opening complementary in shape with the diamond of a slider. One of the pair of lugs has at least one projection continuous to the oblique inner edge and the other lug has a recess receiving the projection. The projection extends transversely beyond the central longitudinal axis of rows of interengaged fastener elements and is disposed for abutting engagement with the slider diamond. When the diamond moves past the projection and spreads the lugs apart, the uppermost opposed coupling elements become disengaged to allow smooth movement of the diamond therebetween.

Abstract: A woven fastener stringer has a row of successively interconnected coupling loops having a head, an upper leg, a lower leg and a heel. The row of loops is secured to a longitudinal edge of a stringer tape by a binding system comprising a plurality of binding warp threads and a plurality of relatively large diameter thermoplastic yarns, all extending longitudinally in the region of the heel of the loop. The thermoplastic yarns are elastically deformed to assume an outer peripheral surface configuration complimentary to inner guide walls of a slider to facilitate smooth running of the slider along the edge of the stringer.

Abstract: A pair of continuous slide fastener stringers having a pair of stringers tapes including thermoplastic synthetic fibers and a pair of integrated rows of fastener elements mounted on the confronting edges of the stringer tapes are provided with an element-free gap therein and are cut off transversely of the element-free gap to produce an individual slide fastener length with ultrasonic processing means. Simultaneously, the cut edges and ends are fused, and top and bottom end stops are mounted respectively on the fastener slide stringers and the slide fastener length with heat induced by the ultrasonic processing means. The interengaged element rows while advancing are introduced into a slider through its mouth which is supported on a slider holder, with portions of the top end stop being forcibly flexed away from each other by the body of the slider, thereby allowing the top end stop to move past the slider.

Abstract: A pair of continuous slide fastener stringers having a pair of stringer tapes including thermoplastic synthetic fibers and a pair of interengaged rows of fastener elements mounted on the confronting edges of the stringer tapes are provided with an element-free gap therein and are cut off transversely of the element-free gap to produce an individual slide fastener length at a first station with ultrasonic processing means. Simultaneously, the cut edges and ends are fused and a top end stop is mounted on the slide fastener length with heat induced by the ultrasonic processing means. While advancing from the first station, the element rows are separated and introduced into a slider through its throats which is supported on a slider holder. Upon arrival at a second station of the fastener stringers with the elements rows emerging from the slider mouth interengated, a bottom end stop is mounted on the fastener stringers across the coupled rows of fastener elements.

Abstract: A pair of slide fastener stringers of continuous or substantially endless length comprising a pair of opposed stringer tapes and a pair of rows of coupling fastener elements carried along the respective confronting inner longitudinal edges of the stringer tapes. Each row of fastener elements has a plurality of sections devoid of fastener elements or at least of the coupling head portions thereof, said sections being spaced at substantially equal intervals defining the ultimate length of an individual fastener product. The end stops are applied to the tapes where the element-free or coupling-head-free sections are located. The tapes are made of thermoplastic synthetic fibers or their blended yarns and have a plurality of openings disposed adjacent to the element-free or coupling-head-free sections and extending across the element rows that have been coupled together. The marginal edges defining the openings are fused with heat.

Abstract: In a slide fastener having continuous coupling elements of the helicoidal-coil type, a bottom stop is formed by imparting ultrasonic vibrations to the several interengaged lowermost scoops of the coupling elements, while these scoops are being compressed from opposite lateral sides thereof to move the coupling heads of each element into abutment against a core received in the other element. The ultrasonic vibrations are applied by the horn of an ultrasonic welding assembly holding the interengaged lowermost scoops from both front and rear sides of the fastener. The invention is also applicable to a slide fastener having zigzag-type continuous coupling elements.

Abstract: A top stop of thermoplastic material is thermally fused onto a plurality of topmost scoops of a continuous coupling element on each stringer tape to limit the upward or fastener closing movement of the slider. The top stop is substantially L-shaped, comprising a longitudinal portion embracing the coupling heads of several topmost scoops and a transverse portion bent outwardly from the upper extremity of the longitudinal portion to secure the stitching thread to the extreme endmost scoop or scoops.

Abstract: First and second tab-operated members are mounted longitudinally on, and pivotally supported at their front ends directly by, the respective wings of the slider body and are engaged with first and second pull tabs respectively. The first tab-operated member has a locking pawl at its rear end which is spring loaded to project into the guide channel in the slider body. Both first and second tab-operated members have tongues extending from their front ends and loosely received in an offset cross-channel in the neck of the slider body, with the second tab-operated member tongue disposed forwardly of the first tab-operated member tongue for movement into and out of engagement therewith. The locking pawl can be retracted away from the guide channel to unlock the slider upon exertion of a pull on either first or second pull tab.

Abstract: Individual slide fasteners are manufactured from a pair of continuous slide fastener stringers having stringer tapes made of a fabric including thermoplastic synthetic fibers. While being advanced intermittently in the longitudinal direction, the stringers are stamped out to form an element-free gap therein and cut to sever off an individual slide fastener length simultaneously at a first station with the application of heat to fuse and solidify the cut end against reveling. A bottom end stop is mounted on the cut end portion of the severed slide fastener length also at the first station. During advancing movement from the first station, the fastener chain is threaded through a slider fixedly supported between the first station and a second station located downstream of the first station. A top end stop is mounted on the cut end portion of the continuous slide fastener stringers at the second station simultaneously with the steps repeated at the first station.

Abstract: A separable bottom end stop having a pin member and a box member is attached to a pair of slide fastener stringers each comprising a row of helically coiled coupling elements supported on and along one side of a marginal edge of a stringer tape, there being a filler cord extending in and along the row of coupling elements. In preparation for the mounting of each of the pin member and the box member, a length of the row of coupling elements is removed, and the exposed filler cord portion and element-free tape portion are pressed together so that the exposed filler cord portion remains in substantial alignment with a portion of the cord which extends over the element-supporting stringer portion, and the element-free tape portion is bent into pressed contact with the exposed filler cord portion. The pin member and the box member are injection-molded on the element-free tape portions and the exposed filler cord portions of the stringers.

Abstract: A slider for a sliding clasp fastener is assembled essentially with a slider body, a pull tab, a cap-like yoke and/or means of locking the slider. The yoke has its lower longitudinal edges fitted into grooves or indents formed in the slider body, and inter-fitting portions are fused together as by an ultrasonic processing into an integral joint.

Abstract: A slide fastener slider having on its upper wing a hook-shaped lug to which a pull tab is pivotally connected by snap fitting operation. There is also provided on the upper wing a projection spaced apart from the lug and adapted to fit in an opening formed in the pull tab when the latter is moved down into contact with the slider upper wing, thereby preventing the pull tab from becoming displaced relative to the horizontal axis of the slider body.