Patents by Inventor Johnathan P. Larsen

Johnathan P. Larsen 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).

  • Magnetic angular position sensor
    Patent number: 4614041
    Abstract: A magnetic angular position sensor having a ferrofluid filled spherical chamber in a cylindrical housing, within which floats a body comprising a buoyant core carrying a magnet which aligns itself and the body with the earth's magnetic field, and carrying an odd number of small permanent magnets. Hall effect devices are located in recesses in the ends of the housing. The housing also carries a calibration solenoid.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: September 30, 1986
    Assignee: Standard Telephones and Cables Public Limited Company
    Inventors: Kenneth S. Darton, Johnathan P. Larsen