Patents by Inventor Horst Ranalli

Horst Ranalli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of and apparatus for making a slide-fastener stringer
    Patent number: 4181159
    Abstract: A slide-fastener stringer is formed by weaving a weft in a warp and simultaneously forming a continuous coupling element along each of the confronting edges of a pair of tapes simultaneously produced by the weaving operation. The synthetic-resin monofilament forming the coupling element is passed around a mandrel between the warp stretches so that the heads of the two coupling elements are produced in interdigitated form. The ground weft yarn is carried from the coupling element side of each set of warps through the shed to the opposite edge of the tape where it is locked into other loops of previous passes of weft by knitting.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: January 1, 1980
    Assignee: OPTI Patent-, Forschungs- und Fabrikations-AG
    Inventors: Alfons Frohlich, Horst Ranalli