Patents by Inventor J. A. Smart

J. A. Smart 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).

  • Folding firedoor lead post assembly
    Patent number: 4924929
    Abstract: In order to reduce heat transfer from one side of a folding fire door lead post assembly to the other side, the lead post assembly includes a central lead post which forms the leading edge of the assembly. In one embodiment of the invention, wing panels extend from the sides of the central lead post and the receiving recess for the door when in closed condition is adapted to receive the central lead post and adjacent portions of the wing panels so that no portion of the central lead post is open to a room on either side of the door when the door is in closed condition. Heat transfer is from one wing panel to the central lead post to the other wing panel rather than directly from the fire to the central lead post. In a second embodiment of the invention, lead post side extensions are secured to the central lead post with heat insulating material therebetween.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: May 15, 1990
    Assignee: Won-Door Corporation
    Inventors: Ronald F. Johnson, J. A. Smart, E. Carl Goodman, Richard Bowles
  • Folding firedoor lead post assembly
    Patent number: 4834161
    Abstract: In order to reduce heat transfer from one side of a folding fire door lead post assembly to the other side, the lead post assembly includes a central lead post which forms the leading edge of the assembly. In one embodiment of the invention, wing panels extend from the sides of the central lead post and the receiving recess for the door when in closed condition is adapted to receive the central lead post and adjacent portions of the wing panels so that no portion of the central lead post is open to a room on either side of the door when the door is in closed condition. Heat transfer is from one wing panel to the central lead post to the other wing panel rather than directly from the fire to the central lead post. In a second embodiment of the invention, lead post side extensions are secured to the central lead post with heat insulating material therebetween.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: May 30, 1989
    Assignee: Won-Door Corporation
    Inventors: Ronald F. Johnson, J. A. Smart, E. Carl Goodman, Richard Bowles