Patents by Inventor Bert R. Lanne

Bert R. Lanne 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 and apparatus for measuring the distance between a measuring transducer and an opposing surface, particularly with paper pulp equipment
    Patent number: 4810964
    Abstract: A method and apparatus for measuring the spacing between a pair of surfaces, at least one of which is of electrically conductive and/or ferromagnetic material, so that the wear of one of the surfaces can be determined. A measuring transducer having a core with coils, and a reference transducer substantially identical to the measuring transducer, are the basic elements. The measuring transducer is mounted close to an opposing surface of conductive and/or ferromagnetic material with a gap between them, and the reference transducer is mounted with a constant gap spacing between it and a reference surface of the same material as the opposing surface.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: March 7, 1989
    Assignee: Kamyr AB
    Inventors: Bertil Granberg, Bert R. Lanne