Gas-and-water-tight flexible fastener

• US 5,293,672 A
• Filed: 03/18/1993
• Issued: 03/15/1994
• Est. Priority Date: 03/30/1992
• Status: Expired due to Fees

• Current Assignee: YKK Corporation
• Original Assignee: Yoshida Kogyo Kabushiki Kaisha
• Inventors: Tominaga, Yutaka, Akeno, Mitsuru
• Primary Examiner(s): Sakran, Victor N.
• Application Number:
  US08/033,366
• Time in Patent Office: 362 Days
• Field of Search: 24/587, 24/576, 24/399, 24/400, 411/508, 411/510, 363/63, 363/64, 363/65
• US Class Current: 24/585.1
• CPC Class Codes: A44B 19/16 Interlocking member having uniform section throughout the length of the stringer for sacks or bags B65D33/2508
• CPC Class Codes: A44B 19/32 Means for making slide fasteners gas or watertight
• CPC Class Codes: B65D 33/2508 using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
• CPC Class Codes: B65D 33/2541 characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
• CPC Class Codes: Y10S 24/50 including member having elongated, resilient, interlocking face with identical, parallel cross-sections throughout its length
• CPC Class Codes: Y10T 24/2534 Opposed interlocking surface having dissimilar cross section
• CPC Class Codes: Y10T 24/45157 Zipper-type [e.g., slider]

Abstract

A gas-and-water-tight flexible fastener comprises an plug being of a arrow-shaped cross-section and including a shaft and a head mounted on a front end of the shaft, the head having a pair of locking fins formed at the proximal ends so as to be directed rearward and outwardly; and a socket being of a squared C-shaped cross-section and including a base, a pair of substantially parallel side plates integrally formed with the base, the side plates having a pair of locking hooks formed along their respective confronting distal edges so as to be directed rearward and inwardly for locking engagement with the locking fins when the plug is forced into the socket between the opposed locking hooks, and resilient partition interposed between the opposed side plates for defining an inner hollow and an outer locking groove.

Claims

1. A gas-and-water-tight flexible fastener comprising:

an plug being of a substantially arrow-shaped cross-section and including a shaft and a head mounted on a front end of the shaft, the head having a pair of locking fins formed at the proximal ends so as to be directed rearward and outwardly; and

a socket being of a substantially squared C-shaped cross-section and including a base, a pair of substantially parallel side plates one integrally formed with and extending perpendicularly from each end of the base, the side plates having a pair of locking hooks formed along their respective confronting distal edges so as to be directed rearward and inwardly for locking engagement with the locking fins when the plug is forced into the socket between the opposed locking hooks and resilient means interposed between the opposed side plates for defining an inner hollow and an outer locking groove.

2. A gas-and-water-tight flexible fastener according to claim 1, the hollow-defining resilient means comprising a resilient partition integrally formed with the socket and interconnected with the side plates at the intermediate points so as to extend substantially parallel with the base.

3. A gas-and-water-tight fastener according to claim 2, the resilient partition being molded from a different material than that of the remaining part of the socket.

4. A gas-and-water-tight flexible fastener according to claim 1, the squared C-shaped cross-sectioned socket having a gutter formed throughout its length, the hollow-defining resilient means comprising a hollow tube snugly fitted into the gutter and adhered to the inside thereof.