Patents by Inventor Thomas L. Krasin

Thomas L. Krasin 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: 4061911
    Abstract: A lamp system for a light projector for continuous light projection upon burn-out of a main lamp. A main lamp with a highly directional light pattern is mounted to the frame for light pattern alignment with the optical axis of the projection lens. A spare lamp is mounted at a location remote from the optical axis. Electronic circuitry detects failure of the main lamp and energizes the spare lamp. A mirror pivots about a point remote from the optical axis for positioning the mirror between the first position which does not effect nor obstruct light transmission between the main lamp and the projection lens and between a second position where the mirror reflects light from the automatically energized spare lamp along the optical axis of the projection lens upon failure of the main lamp.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: December 6, 1977
    Assignee: Audio Visual Innovators Corporation
    Inventor: Thomas L. Krasin