Patents by Inventor Jon Kranhouse

Jon Kranhouse 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).

  • Panoramic reverse Galilean telescope optics for an underwater diving mask
    Patent number: 6612693
    Abstract: A dive mask having a configuration of reverse Galilean telescopes. The reverse Galilean telescopes are tilted relative to each other. This configuration achieves panoramic true-sized vision underwater, instead of vision that exhibits the magnification effects experienced with flat dive masks.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: September 2, 2003
    Inventors: Jon Kranhouse, John R. Rogers
  • Panoramic reverse galilean telescope optics for an underwater diving mask
    Publication number: 20020063847
    Abstract: A dive mask having a configuration of reverse Galilean telescopes. The reverse Galilean telescopes are tilted relative to each other. This configuration achieves panoramic true-sized vision underwater, instead of vision that exhibits the magnification effects experienced with flat dive masks.
    Type: Application
    Filed: January 17, 2001
    Publication date: May 30, 2002
    Inventors: Jon Kranhouse, John R. Rogers
  • Diving mask with lenses and method of fabricating the same
    Patent number: 5764332
    Abstract: A diving mask having hemispherically-shaped lenses mounted on a flexible gasket or portion and fitted to the contours of a user's face. Laser scanning or topographic mapping is used to determine the contours of the user's face. Edges of the hemispherically-shaped lenses are then shaped to fit the contours of the face. As a result, the spherical center of the lenses substantially coincides with the optical nodal point of the user's eyes, or the center of rotation of the eyes. This virtually eliminates the phenomenon of underwater magnification-distortion caused by the difference in refractive indices of water and air. The diving mask may also have hemispherically-shaped lenses mounted on a support portion. The support portion, in turn, is mounted on a flexible gasket of selected size. A secure seal is provided between the diving mask and a user's face by the flexible gasket. The diving mask may be provided with at least one purge valve.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 9, 1998
    Inventor: Jon Kranhouse
  • Diving mask with lenses and method of fabricating the same
    Patent number: 5625425
    Abstract: A diving mask having hemispherically-shaped lenses mounted on a flexible gasket or portion and fitted to the contours of a user's face. Laser scanning or topographic mapping is used to determine the contours of the user's face. Edges of the hemispherically-shaped lenses are then shaped to fit the contours of the face. As a result, the spherical center of the lenses substantially coincides with the optical nodal point of the user's eyes, or the center of rotation of the eyes. This virtually eliminates the phenomenon of underwater magnification-distortion caused by the difference in refractive indices of water and air. The diving mask may also have hemispherically-shaped lenses mounted on a support portion. The support portion, in turn, is mounted on a flexible gasket of selected size. A secure seal is provided between the diving mask and a user's face by the flexible gasket. The diving mask may be provided with at least one purge valve.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: April 29, 1997
    Inventor: Jon Kranhouse
  • Diving mask with lenses and method of fabricating the same
    Patent number: RE37816
    Abstract: A diving mask having hemispherically-shaped lenses mounted on a flexible gasket or portion and fitted to the contours of a user's face. Laser scanning or topographic mapping is used to determine the contours of the user's face. Edges of the hemispherically-shaped lenses are then shaped to fit the contours of the face. As a result, the spherical center of the lenses substantially coincides with the optical nodal point of the user's eyes, or the center of rotation of the eyes. This virtually eliminates the phenomenon of underwater magnification-distortion caused by the difference in refractive indices of water and air. The diving mask may also have hemispherically-shaped lenses mounted on a support portion. The support portion, in turn, is mounted on a flexible gasket of selected size. A secure seal is provided between the diving mask and a user's face by the flexible gasket. The diving mask may be provided with at least one purge valve.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: August 13, 2002
    Inventor: Jon Kranhouse