SLIDE FASTENER AND METHOD FOR MANUFACTURING SEPARABLE BOTTOM END STOP BOX FOR SLIDE FASTENER

WIPO Patent Application WO/2024/089902

A1

In the present invention: among inner surfaces (25a, 25b, 25c, 25d) constituting an insertion pin hole (25) of a box (21), a front-side surface (25a) and/or a back-side surface (25b) facing a front surface (11b)/back surface (11c) of an insertion pin (11) has thereon a protrusion (26, 27) capable of engaging with a recess (16, 17); the protrusion (26, 27) has an asymmetric shape about a plane (P) which passes through the center of the protrusion (26, 27) in an opening/closing direction of the insertion pin (11) and is orthogonal to the opening/closing direction; and the protrusion (26, 27) includes an upper inclined surface (26a, 27a) which is formed so as to increase the thickness of the protrusion (26, 27) downwardly from an upper end part of the protrusion (26, 27) in the opening/closing direction of the insertion pin (11) and a lower inclined surface (26b, 27b) which is formed so as to increase the thickness of the protrusion (26, 27) upwardly from a lower end part of the protrusion (26, 27) in the opening/closing direction of the insertion pin (11), wherein the upper inclined surface (26a, 27a) has a larger inclination than the inclination of the lower inclined surface (26b, 27b).

SAKAMOTO YOSHITO (JP)
NAKAYAMA EIJI (JP)
HINATA SHINGO (JP)

PCT/JP2022/040570

May 02, 2024

October 28, 2022

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YKK CORP (JP)

A44B19/38

WO2019186966A1	2019-10-03
WO2012042602A1	2012-04-05
WO2015052756A1	2015-04-16

JPS6373014U	1988-05-16
JPS57111213U	1982-07-09
KR20160002002A	2016-01-07

Eikoh Patent Firm, P.C. (JP)

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