CA1214027A - Watertight slide fastener stringer - Google Patents

Watertight slide fastener stringer

Info

Publication number
CA1214027A
CA1214027A CA000428795A CA428795A CA1214027A CA 1214027 A CA1214027 A CA 1214027A CA 000428795 A CA000428795 A CA 000428795A CA 428795 A CA428795 A CA 428795A CA 1214027 A CA1214027 A CA 1214027A
Authority
CA
Canada
Prior art keywords
folded edge
opposed
base
neck
tapes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000428795A
Other languages
French (fr)
Inventor
Takeo Fukuroi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YKK Corp
Original Assignee
Yoshida Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoshida Kogyo KK filed Critical Yoshida Kogyo KK
Application granted granted Critical
Publication of CA1214027A publication Critical patent/CA1214027A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/32Means for making slide fasteners gas or watertight
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/02Slide fasteners with a series of separate interlocking members secured to each stringer tape
    • A44B19/04Stringers arranged edge-to-edge when fastened, e.g. abutting stringers

Landscapes

  • Slide Fasteners (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
A watertight slide fastener stringer comprises a row of discrete coupling elements mounted on a support tape and an auxiliary tape along their folded edge portions, there being first and second contact portions contiguous to the respective folded edge portions and engageable with corresponding first and second contact portions, respectively, of a like companion stringer to effect watertightness between the two support tapes and also between the two auxiliary tapes. Each coupling element has a neck extending centrally from a base, and a pair of flanged legs extending from opposite ends of the base in the same direction as the neck so as to hold the folded edge portions of the support and auxiliary tapes between one leg and the neck and between the latter and the other leg, respectively. Each leg terminates in a flange disposed on the back surface of the respective contact portion. With the watertight slide fastener in closed position, if lateral pulling forces, for example, are exerted on the opposed tapes, the opposed coupling elements roll or tilt so as to reduce the tightness between the opposed first contact portions. At the same time this rolling causes the opposed second contact portions to be pressed against each other with increased tightness, thus maintaining efficient and reliable watertightness between the opposed companion stringers.

Description

2~

BACKGROUND OF T'IE INVENTION
Field of the Inven-tion:
The present invention relates to slide fasteners, and more particularly to a watertight slide fastener stringer.
Prior Art:
Watertight slide fastener stringers are known which generally comprise a single support tape made of a water-tight soft material, and a row of discrete coupling elements mounted on the tape along an inner longitudinal edge portion thereof; such tape margin is folded so as to provide therealong a contact portion engageable with a corresponding contact portion of a like companion stringer to effect a watertightness between the two stringers. When the opposed coupling element rows of the two stringers are interengaged by a slider to close the watertight slide fastener, the opposed contact portions are brought into contact with one another. The common problem with this type of watertight stringer is that the interengaged individual coupling elements are subjected to rolling or tilting due to undue stress induced by lateral pulling forces exerted on the tapes and by thrusting forces exerted on the coupling element rows. This rolling of the coupling elements impairs the contact between the opposed contact portions, thus causing insufficient watertightness between the opposed stringers. Japanese Utility Model Publication (Jikkosho) 53-4~161, issued October 12, 1978, is believed to exemplify the prior art.
S~MMARY OF THE INVENTION

It is therefore an object of the invention to provide a watertight slide fastener stringer which enables efficient and reliable watertightness between the opposed companion stringers.
Another object of the invention is to provide a watertight slide fastener stringer which enables smooth movement of a slidex~

According to the present invention, a watertight slide fastener stringer comprises a row of discrete coupling elements mounted on a support tape and an auxiliary tape along their folded edge portions, there being first and second contact portions contiguous to the respective folded edge portions and engageable with`
corresponding rirst and second contact portions, respec-tively, of a like companion stringer to effect water-tightness not only between the two support tapes but also between the two auxiliary tapes. Each coupling element has a neck extending centrally from a base, and a pair of legs extending from opposite ends of the base in the same direction as the neck so as to hold the folded edge portions of the support and auxiliary tapes between one leg and the neck and between the latter and the other leg, respectively. Each leg terminates in a flange disposed on the contact portion. With the watertight slide fastener in closed position, if lateral pulling forces, for example, .`L~

are exerted on the opposed tapes, the opposed coupling elements roll or tilt so as to reduce the tightness between the opposed first contact portions. At the same time this rolling causes the opposed second contact portions to be pressed against each other with increased tightness, thus guaranteeing efficient and reliable watertightness between the opposed companion stringers.
Many other advantages, features and additional objects of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying drawings in which a preferred embodiment incorporating the principles of the present invention is shown by way of illustrative example.

B~IEF DESCE~IPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a coupling element for a watertight slide fastener stringer embodying t'ne present invention;
FIG. 2 is a fragmentary plan view, partly in longi-tudinal cross section, of the watertight slide fastener stringer;
FIG. 3 is a fragmentary transverse cross sectional view of the stringer;
E`IG. 4 is a fragmentary plan view, partly in longitudinal cross section, of the stringer of FIGS. 2 and
3, showing the same having been interengaged with a like companion stringer; and FIG. 5 is a fragmentary transverse cross-sectional view of the opposed companion stringers of FIG. ~.
DETAILED DESCRIPTION
The principles of the present invention are particularly useful when embodied in a watertight slide fastener stringer (hereinafter referred to as "stringer") such as shown in FIGS. 2 and 3, generally indicated by the numeral 20.
The stringer 20 includes a support tape 7 made of a watertight soft ma-terial such as natural or synthetic rubber, or made of natural or synthetic fibers coated with such a watertight material. The tape 7 has an inner longitudinal margin folded through its whole length so as to provide a first folded edge portion 7a and a first contact portion 7b contiguous thereto. An auxiliary tape 8, which is made of the same watertight material as the support tape 7 and coextends lengthwise therewith, has a second folded edge portion 8a and a second contact portion 8b. The first and second folded edge portions 7a, ~a are spaced apart facewise from one another~ while the first and second contact portions 7b, 8b are laterally (vertically in FIG. 3) spaced apart from one another. Alternatively, the auxiliary tape 8 may be an integral part of the support tape 7. The first and second contact por-tions 7a, 8a are adapted to engage corresponding first and second contact portions 7'a, 8'a, respectively, of a like companion stringer 20' (FIGS. 4 and 5), to effect a watertightness between the two s-tringers 20, 20'.

~4~2~

A first core thread 9 coextends lengthwise with the support tape 7 and is attached to the first folded edge portion 7a. Likewise, a second core thread 10 coextends lengthwise with the auxiliary tape 8 and is attached to the second folded edge portion 8a.
A row of discrete coupling elements 1 is mounted on and along the first and second folded edge portions 7a, 8a of the tapes 7, 8; each coupling element 1 has a base 2, a neck 6, a coupling head 5, and first and second legs 3a, 3b. The base 2 is disposed remotely from and parallel to the first and second contact portion 7b, 8b. The neck 6 extends centrally from the base 2 and is disposed between the first and second folded edge portions 7a, 8a. The coupling head 5, in the form of an enlarged portion, extends from the neck 6 beyond the first and second contact portions 7b, 8b. The first and second legs 3a, 3b extend from opposite ends of the base 2 in the same direction as the neck 6 so as to hold tightly the first and second folded edge portions 7a, 8a between the first leg 3a and the neck 6 and between the latter and the second leg 3b, respectively.
The first and second legs 3a, 3b terminate in first and second flanges 4a, 4b, respectively, disposed on the respective back surfaces of the first and second contact portions 7b~ 8b. Each of the first and second flanges 4a, 4b has inner and outer sections projecting in opposite directions from a respective one of the first and second ~L21~

legs 3a, 3b. The first and second core threads 9, 10 are disposed between the inner section of the first flange 4a and the base 2 and between the inner section of the second flange 4b and the base 2, respectively. The inner flange sections serve to assist in holding the folded edge portions and the core threads in place between the neck 6 and the legs 3a, 3b. The outer flange sections serve as guide rails for a slider 11 tFIG. 5).
The slider 11 has in its inner wall 12 a longi-tudinal groove 13 for the passage therethrough of the outer sections of the second flanges 4b, 4'b and the outer halves of the second con-tact portions 8b, 8'b.
When the opposed rows of coupling elements 1, 1' of the two companion stringers 20, 20' tFIGS. 4 and ~) are interengaged by the slider 11 to close the watertight slide fastener, the opposed first contact portions 7b, 7'b are pressed against one another to effect a watertight between the opposed support tapes 7, 7' and, likewise the opposed second contact portions 8b, 8'b are pressed against one another to effect a watertightness between the opposed auxiliary tapes 8, 8l. During this interengagement, the slider 11 slides on outer surfaces 4c, 4'c of the first flanges 4a, 4'a and also on outer surfaces 4d, 4'd of the second flanges 4b, 4'b.
With the watertight slide fastener thus in closed position, when lateral pulling forces are exerted on the opposed support -tapes 7, 7', or when a thrusting force is exerted on the interengaged coupling element rows 1, 1', ~he opposed individual coupling elements 1, 1' roll or tilt so as to allow reduced tightness between the opposed first contact portions 7b, 7'b. At the same time this rolling of the coupling elements 1, 1' causes the opposed second contact portions 8b, 8'b to be pressed against one other with increased tightness thus maintaining efficient and reliable watertightness between the opposed companion stringers 20, 20'.
With the watertight slide fastener stringer 20, since the support tape 7 and the auxiliary tape 8 are folded to virtually embrace the first and second flanges 4a, 4b, respectively, an improved watertightness can be achieved.
Ano-ther advantage of the watertight stringer 20 is that during interengagement of the opposed companion stringers 20, 20', the slider 11 is guided by the firs-t flanges 4a, 4'a and also by the second flanges 4b, 4'b, thus guaranteeing smooth movement of the slider. Further, since the slider 11 does not touch either the support tape 7 or the auxiliary tape 8 during movement along the opposed coupling element rows 1, 1', these tapes 7, 8 are Eree from being easily worn or otherwise damaged, thus guaranteeing reliable slide fastener functions and efficient water-tightness for a long period of time.
Although various minor modifications may be suggested by those versed in the art, it should be understood that I wish to embody within the scope of the patent ~ranted hereon, all such embodiments as reasonably and properly come within the scope of my contribution to the art.

Claims (3)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows.
1. A watertight slide fastener stringer comprising:
(a) a support tape made of a watertight soft material and having a first folded edge portion and a first contact portion contiguous thereto and engageable with a correspond-ing first contact portion of a support tape of a like companion stringer to effect a watertightness between such two support tapes;
(b) an auxiliary tape made of a watertight soft material and having a second folded edge portion spaced from said first folded edge portion, and a second contact portion laterally spaced apart from said first contact portion and engageable with a corresponding second contact portion of an auxiliary tape of the companion stringer to effect a watertightness between such two auxiliary tapes; and (c) a row of discrete coupling elements mounted on and along said first and second folded edge portions, each of said coupling elements having (1) a base disposed remotely from and parallel to said first and second contact portions, (2) a neck extending from said base and disposed between said first and second folded edge portions, (3) a coupling head extending from said neck beyond said first and second contact portions, and (4) first and second legs extending from opposite ends of said base in the same direction as said neck and terminating in first and second flanges, respectively, lying parallel to said base and disposed on respective inner surfaces of said first and second contact portions so as to hold said first and second folded edge portions between said first leg and said neck and between the latter and said second leg, respectively, (5) each of said flanges further comprising an outer surface portion facing in a direction opposite to that of the respective first or second contact portion, said outer surfaces being arranged to become engaged by an associated slider when the latter is pulled along a pair of stringers as set forth, whereby the pressure exerted by a slider in bringing the coupling elements of a pair of the stringers as set forth is transmitted from the slider directly onto the respective elements.
2. A watertight slide fastener stringer according to claim 1, each of said first and second flanges having an inner section and an outer section projecting in opposite directions from a respective one of said first and second legs, said outer section forming said outer surface portion.
3. A watertight slide fastener stringer according to claim 2, said support and auxiliary tapes having first and second core threads attached to said first and second folded edge portions, respectively, said first and second core threads being disposed between said base and said inner flange section of said first leg and between said base and said inner flange section of said second leg, respectively.
CA000428795A 1982-05-26 1983-05-25 Watertight slide fastener stringer Expired CA1214027A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57-77259 1982-05-08
JP1982077259U JPS58181210U (en) 1982-05-26 1982-05-26 Slide fastener

Publications (1)

Publication Number Publication Date
CA1214027A true CA1214027A (en) 1986-11-18

Family

ID=13628849

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000428795A Expired CA1214027A (en) 1982-05-26 1983-05-25 Watertight slide fastener stringer

Country Status (11)

Country Link
EP (1) EP0095161B1 (en)
JP (1) JPS58181210U (en)
KR (1) KR850000221Y1 (en)
AU (1) AU537119B2 (en)
CA (1) CA1214027A (en)
DE (2) DE95161T1 (en)
ES (1) ES272429Y (en)
GB (1) GB2120722B (en)
HK (1) HK78288A (en)
MY (1) MY8700882A (en)
SG (1) SG86887G (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY101635A (en) * 1986-03-14 1991-12-31 Ykk Corp Fluid-tight slide fastener stringer
IT1298507B1 (en) * 1998-01-29 2000-01-12 Gianfranco Germani SELF-SEALING LINEAR PROFILE FOR MECHANICAL COMMITMENT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1201290A (en) * 1969-04-09 1970-08-05 New Zipper Co Ltd Improvements in or relating to sliding clasp fasteners
US4348789A (en) * 1980-11-04 1982-09-14 Talon, Inc. Slide fastener with improved clamps and method of manufacture

Also Published As

Publication number Publication date
AU1495083A (en) 1983-12-08
EP0095161A1 (en) 1983-11-30
SG86887G (en) 1988-05-20
MY8700882A (en) 1987-12-31
DE95161T1 (en) 1984-06-07
HK78288A (en) 1988-10-07
AU537119B2 (en) 1984-06-07
KR850000221Y1 (en) 1985-02-25
ES272429U (en) 1983-11-16
JPS58181210U (en) 1983-12-03
KR840006067U (en) 1984-11-30
GB2120722A (en) 1983-12-07
EP0095161B1 (en) 1985-08-14
GB2120722B (en) 1985-09-04
GB8313916D0 (en) 1983-06-22
DE3360563D1 (en) 1985-09-19
ES272429Y (en) 1984-05-16

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