Patents by Inventor Nils A. Persson

Nils A. Persson 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).

  • Apparatus for positioning the plane of an apparatus table at an optional inclination
    Patent number: 4575039
    Abstract: In an apparatus for positioning the plane (33) of an apparatus table (8) at an optional inclination there are included two rotatable, wedge-shaped housings (4, 6), adapted for giving the plane (33) the selected inclination in a combination of angular rotations. For avoiding a point of singularity within the positioning range for the inclination, an angularity is introduced between the uppermost of the housings (6) and the plane (33).
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: March 11, 1986
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Nils A. Persson, Torsten G. Lindberg