Ykk Corporation

Takaaki Fujii

Shigeyoshi Takazawa

Hisashi Yoneshima

Kiyomasa Segawa

Kentaro Yamamoto

Buckle

In a waterproof slide fastener, fastener elements are formed using a synthetic resin which contains a silicone resin or a fluorine-based resin, and a water repellant agent is applied to waterproof tapes and the fastener elements and hence, the waterproof slide fastener can exhibit a water-repellent effect brought about by the waterproof tapes and a water-repellent effect brought about by the fastener elements. Accordingly, it is possible to properly prevent the intrusion of a liquid through a gap formed between the left and right fastener elements and a gap formed between the fastener element and the waterproof tape.

Waterproof slide fastener

A separable bottom end stop in which a box pin has a box pin body, a first notch portion for receiving the head end of a locking pawl of a reverse-opening slider, and a protrusion piece projecting toward a separable pin in the direction of the tape width from a separable pin facing surface opposed to the separable pin. A side wall surface of the first notch portion and that sectional surface of the protrusion piece which is provided to the front end side of the box pin are formed in one plane to constitute a locking plane with which the front end of the locking pawl makes contact to lock the reverse-opening slider. The box pin body and the protrusion piece have a slant surface declined from the position of the locking plane toward an element row.

Separable bottom end stop for slide fastener

Slide fastener element

Growing community of inventors

Toyama, Japan

Takaaki Fujii