Separable bottom end stop for slide fastener

• US 20040000039A1
• Filed: 03/24/2003
• Published: 01/01/2004
• Est. Priority Date: 03/26/2002
• Status: Active Grant

• Current Assignee: YKK Corporation
• Original Assignee: YKK Corporation
• Inventors: Takano, Tomiyoshi, Umino, Mitsugu, Takazawa, Shigeyoshi
• Granted Patent: US 6,826,809 B2
• Time in Patent Office: Days
• US Class Current: 24/388
• CPC Class Codes: A44B 19/388 Bottom end stop means for quick opening slide fasteners
• CPC Class Codes: Y10T 24/2513 and for aligning surfaces or obstructing slider movement
• CPC Class Codes: Y10T 24/2593 including complementary, aligning means attached to ends of interlocking surfaces

Abstract

A separable bottom end stop for a slide fastener comprising a box, a box pin, and an insert pin. Protruding guide portions which protrude onto respective fastener tapes are integrally molded with respective side faces at tape-sides of the box pin and the insert pin via thin guide portions. The separable bottom end stop is formed of polyacetal resin, and a distance d between each outer side face of the box and each of the protruding guide portions and a protrusion height h of each of the protruding guide portions from a surface of each of the thin guide portions when the box pin and the insert pin are mounted into the box satisfy the equation (I): tan⁻¹(d/h) ≧33°, where d≠0. The separable bottom end stop becomes hard to be broken with having excellent durability, despite using polyacetal resin which allows various coloring achieved easily, but is easy to be broken.

Claims

1. A separable bottom end stop for a slide fastener comprising a box, a box pin, and an insert pin, wherein

protruding guide portions which protrude onto respective fastener tapes are integrally molded with side faces at tape-sides of the box pin and the insert pin via thin guide portions,

the separable bottom end stop is formed of polyacetal resin, and

a distance d between each of outer side faces of the box and each of the protruding guide portions when the box pin and the insert pin are mounted into the box, and a protrusion height h of each of the protruding guide portions from a surface of each of the thin guide portions satisfy the following equation (I):

tan<sup>−

1</sup>(d/h)≧

33°

 

 

(I)

where d≠

0.