Claims
- 1. A slide fastener element comprising a tape woven with warp and weft yarns, two separate resilient filaments inserted between said warp and weft yarns, each said filament being formed into a helix, the loops of one said helix being wound in a direction opposite the direction of winding of the loops of the other said helix, said loops being imbricated at spaced intervals, a lateral portion of each loop constituting a coupling member along an edge of said tape, the loops of each helix being interconnected by connecting portions extending in the direction of the warp yarns on the side of said helices opposite to the coupling members, every alternate loop belonging to a different one of said helices formed by said two filaments, the tape distorting stress in one said helix being essentially offset by the tape distorting stress in the other said helix by virtue of said helices being wound in opposite directions.
Priority Claims (1)
Number |
Date |
Country |
Kind |
71.36698 |
Oct 1971 |
FR |
|
Parent Case Info
This is a division of application Ser. No. 429,819 filed Jan. 2, 1974, which was a continuation-in-part of application Ser. No. 295,019, filed Oct. 4, 1972, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (4)
Number |
Date |
Country |
1,221,114 |
Feb 1971 |
UK |
1,280,111 |
Nov 1961 |
FR |
248,200 |
Feb 1948 |
CH |
1,945,315 |
Mar 1971 |
DT |
Divisions (1)
|
Number |
Date |
Country |
Parent |
429819 |
Jan 1974 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
295019 |
Oct 1972 |
|