Patents by Inventor David H. Hanson

David H. 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).

  • Wet weather vision improvement system and method for video and television camera, and other viewing and imaging equipment
    Patent number: 6527871
    Abstract: A moisture and build up removal system and method which deliver air at high velocity to the surface of a lens or a lens shield. The system and method having a particular implementation with lens surfaces of video, photographic, image viewing, and image processing devices.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: March 4, 2003
    Inventors: Brian P. Hanson, David H. Hanson, Stanislav Torgovitsky
  • Wet weather vision improvement system and method for open cockpit racing and for other application
    Patent number: 6413324
    Abstract: A moisture and build up removal system and method which deliver air at high velocity to the surface to be cleaned and/or maintained free of moisture and build up. The system and method having a particular implementation with surfaces of helmet visors and other equipment where having unobstructed view is an important feature of the equipment.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: July 2, 2002
    Inventors: Brian P Hanson, David H. Hanson
  • Seismic isolation bearing having a tension damping device
    Patent number: 5862638
    Abstract: The present invention is directed to a seismic isolation bearing having an ultimate translational distance and capacity for supporting an upper structure on a lower structure, comprising a load bearing core for absorbing forces which causes a horizontal sliding movement between the upper structure and the lower structure, an upper load bearing plate positioned on top of the uppermost load bearing body and a lower load bearing plate positioned beneath the lowermost load bearing body. The bearing further includes a tension damping device comprising a matrix material and a reinforcement material disposed therewithin and having an activation point and range. Each tension damping device is adapted to be connected between the upper load bearing plate and the lower load bearing plate for damping and stiffening the sliding movement between the upper and lower structures.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: January 26, 1999
    Assignee: Applied Structures Technology LLC
    Inventors: Rodney H. Holland, Douglas G. Burgess, William H. Strobel, David H. Hanson