Patents by Inventor Peter S. Tisack

Peter S. Tisack 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).

  • Patent number: 4821058
    Abstract: A photographic camera includes a lens adjustable to different focus distances, means for supplying a flash illumination, and a rangefinder for indicating the distance to a subject as one of at least two zones. The camera is operable in a flash mode or a non-flash mode. A ratchet is provided defining at least three consecutive teeth connected to the lens, each one of the ratchet teeth defining a focus setting for the lens, the focus settings ranging from a relatively near focus setting to a relatively distant focus setting. A pawl is provided for engaging a selected one of the ratchet teeth to fix the focus of the lens at the focus distance associated with the selected ratchet tooth.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: April 11, 1989
    Assignee: Eastman Kodak Company
    Inventors: John H. Minnick, John E. Spencer, Peter S. Tisack