Patents by Inventor Leonard J. Berwick

Leonard J. Berwick 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: 4208676
    Abstract: A television projection system for producing an enlarged television image on a projection screen positionally located at a remote point from a standard television set. A tubular housing is mounted adjacent to a cathode ray tube screen of the television set. The tubular housing extends in a longitudinal direction and includes a first end having a lens tube housing displaceably movable with respect to the overall tubular housing. The lens tube housing contains a single plano-convex lens element which is utilized for enlarging the image produced from the cathode ray tube screen onto the remotely located projection screen. A switching element comprising a double throw, double pole switch is mounted on the television set and electrically coupled to the vertical deflection circuit in order to provide a vertically inverted and transversely reversed image. The inverted and reversed image is passed through the plano-convex lens where it is inverted and reversed to provide an appropriate image on the projection screen.
    Type: Grant
    Filed: January 17, 1978
    Date of Patent: June 17, 1980
    Assignee: Leonard J. Berwick
    Inventors: Leonard J. Berwick, Jay I. Weiss, Norman M. Besden