Patents by Inventor Mark K Robinson

Mark K Robinson 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).

  • Dual movable projection screen structure
    Patent number: 8169698
    Abstract: An integral, dual projection screen structure for displaying an image from a projection source. The projection screen structure comprises a frame; first and second movable projection screens disposed within the frame, each movable screen having an operable roller for rolling and unrolling the screen and being mounted at the top portion of the frame; and a masking system having at least two movable masking panels disposed within the frame over at least two of the top portion, bottom portion and first and second side portions of the front side of the sheet in the second screen.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: May 1, 2012
    Assignee: Stewart Filmscreen Corporation
    Inventor: Mark K. Robinson
  • Dual projection screen structure
    Patent number: 7995273
    Abstract: An integral, dual projection screen structure for displaying an image from a projection source. The projection screen structure comprises a frame; a fixed projection screen disposed within and mounted to the frame; a first masking panel disposed within the frame over the fixed projection screen; a movable projection screen disposed within the frame adjacent the first masking panel, the movable screen having an operable roller for rolling and unrolling the screen and being mounted at the top portion of the frame; and a second masking panel disposed within the frame over the movable projection screen.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: August 9, 2011
    Assignee: Stewart Flimscreen Corporation
    Inventor: Mark K Robinson