Patents by Inventor Einar H. Bachmann

Einar H. Bachmann 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).

  • Depth monitoring system
    Patent number: 4491927
    Abstract: A depth monitoring system includes a pair of inclinometer sensors mounted on the boom and on the dipper stick of a digging machine to measure electrically the angle of inclination of the boom and the dipper stick relative to the horizontal. Employing these two sensors, the position of the bucket connected pivotally to the free end of the dipper stick can be calculated by means of a simple geometric equation in which each trigonometric function is based on a single angle only. Additionally, preset and zero reference capabilities are provided.
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: January 1, 1985
    Assignee: The Digger Meter Corporation
    Inventors: Einar H. Bachmann, Kristjan Ingvarsson