Patents by Inventor Werner Eichenberger

Werner Eichenberger 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).

  • Photoelectrical bobbin feeler
    Patent number: 4276910
    Abstract: A photoelectrical bobbin feeler, in particular weft bobbin feeler, comprises one light source and two light sensors, or vice versa, two light sources and one light sensor. At least one polaroid filter is arranged in front of the one light source, or one light sensor, respectively, for polarizing the light which is specularly as well as diffusely reflected from the bobbin, and provides for a safer detection of the "bobbin empty" condition.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: July 7, 1981
    Assignee: Gebruder Loepfe AG
    Inventor: Werner Eichenberger
  • Optical filling or weft bobbin feeler
    Patent number: 4221242
    Abstract: An optoelectrical filling or weft bobbin feeler on a shuttle weaving machine, provided with a light source and a light sensor located in a casing which comprises at least one wall mounted in parallel relationship to the shuttle race. Light source and light sensor are arranged in the casing such that the optical axes define a plane forming a small acute angle with said one wall of the casing. Such a bobbin feeler functions to stop the loom in the instant when the thread winding on the bobbin runs out.
    Type: Grant
    Filed: November 15, 1978
    Date of Patent: September 9, 1980
    Assignee: Gebrueder Leopfe AG
    Inventor: Werner Eichenberger