Patents by Inventor Erhard Mettler

Erhard Mettler 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).

  • Scale with digital display
    Patent number: 4149605
    Abstract: In known scales, switching from a fine to a course measurement range automatically decreases the resolution by at least one place. Since the change in range takes place in dependence upon the total weight applied to the scale, displayed values after taring still lack at least one significant digit relative to the fine indication. In the present invention this digit is reactivated automatically upon activation of the tare key if the weight after taring is less than the predetermined fine range limiting weight.
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: April 17, 1979
    Assignee: Mettler Instrumente AG
    Inventors: Erhard Mettler, Hans Frey