Patents by Inventor Otto Langenstein

Otto Langenstein 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).

  • Latch needle for machines producing knit goods
    Patent number: 5090218
    Abstract: A latch needle for machines producing knit goods includes a needle shank having a slot, a needle head, and a latch. The needle shank has a first longitudinal plane of symmetry and the slot has a second longitudinal plane of symmetry. The latch is pivotably supported in the slot in the needle shank so as to be pivotable about a latch axis extending transversely to the second longitudinal plane of symmetry of the slot. The second longitudinal plane of symmetry intersects the first longitudinal plane of symmetry at an acute angle.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: February 25, 1992
    Assignee: Theodor Groz & Sohne & Ernst Beckert
    Inventors: Bernhard Schuler, Kurt Wiedenhofer, Otto Langenstein, Siegfried Wissmann