Patents Assigned to Spectacolor Inc.
  • Sign construction for photographic transparencies
    Patent number: 4739568
    Abstract: A sealed backlit sign frame having a photographic transparency as the viewing face of the frame is provided. Lights are provided behind the transparency for illumination. A partial vacuum or negative pressure is created in the frame and bows the transparency inwardly. This bowing action stabilizes the transparency and prevents wind induced undulations. Exhaust blowers and air vent dampers are provided to maintain the negative pressure in the frame. The blowers, dampers and lights are preferably controlled by a suitable control system.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: April 26, 1988
    Assignee: Spectacolor Inc.
    Inventor: Jerrold J. Gearhart
  • Sign
    Patent number: D306320
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: February 27, 1990
    Assignee: Spectacolor Inc.
    Inventor: George N. Stonbely