The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1979
Filed:
Sep. 28, 1977
Helmut Heimberger, Locarno, CH;
Optilon W. Erich Heilmann GmbH, Cham, CH;
Abstract
A warp-knit slide-fastener stringer half comprises an elongated warp-knitted tape having a pair of opposite faces and a pair of opposite longitudinally extending edges. The tape is knit with a plurality of warp yarns forming longitudinally extending parallel wale-forming chains, a first group of weft yarns laid into and each extending over only three of the chains, and a second group of weft yarns laid into and each extending over only two of the chains. A continuous monofilamentary coupling element having a succession of turns lies on one face of the tape along one edge thereof and is secured thereto by double-lock stitching which overlies the turns, extends through the tape and has a needle thread on the other face of the tape between two of the wales formed by the chains at the edge. The warp-chain-forming yarns and the weft yarns or either of these in the alternative can be composed of shrinkable threads and thermofixed.