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:
Apr. 18, 1978
Filed:
Sep. 10, 1976
Alfons Frohlich, Essen, DT;
Franz Hochlehnert, Essen, DT;
OPTI Patent- Forschungs- und Fabrikations-AG, Glarus, CH;
Abstract
A slide fastener comprises a pair of coiled coupling rows of synthetic-resin monofilament with each coupling element having a coupling loop or eye formed with a coupling head, a pair of monofilament segments extending away from the head, and connecting shanks joining adjacent coupling elements together. The shanks are received in pockets formed by longitudinal threads which pass alternately over and under the shanks so that the longitudinal threads and the shanks form a tape-like unit or support structure. Preferably the longitudinal threads constitute a warp with the shanks acting as a weft for the tape-like unit. The coupling elements have a generally elliptical or flattened cross section whereby the coupling eye has its axis generally parallel to the major axis of the cross section of the monofilament.