Patents by Inventor Harold Duane Hanson

Harold Duane Hanson 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).

  • High voltage aerosol detector
    Patent number: 3949390
    Abstract: An ion current is produced between two spatially separated electrodes by creating a corona discharge about one of these electrodes and causing ions to flow to the other electrode. Aerosols introduced into the region between the two electrodes interact with the flowing ions causing a resultant decrease in ion current. A decrease in ion current is sensed to indicate the presence of aerosols.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: April 6, 1976
    Assignee: RCA Corporation
    Inventors: Martin Rayl, Harold Duane Hanson, Billy Wesley Beyers, Jr.
  • Aerosol detector
    Patent number: 3932851
    Abstract: An ion current is produced between two spatially separated electrodes by creating a corona discharge about one of these electrodes and causing ions to flow to the other electrode. Aerosols introduced into the region between the two electrodes interact with the flowing ions causing a resultant decrease in ion current. A decrease in ion current is sensed to indicate the presence of aerosols. A reflecting member reflects aerosols towards the electrodes causing a relatively lengthy interaction between the aerosols and the ion current.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: January 13, 1976
    Assignee: RCA Corporation
    Inventors: Martin Rayl, Harold Duane Hanson