Patents by Inventor Joseph W. K. Smith

Joseph W. K. Smith 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: 4896427
    Abstract: A draughting apparatus 10 comprising a plurality of substantially planar symbols elements 30 having raised outlines 50 for depicting predetermined symbols 32, a support panel means 12, 16, for supporting the symbols elements 30 in a generally planar layout, said symbols elements 30 being provided with symbol element locating means 34, 16, and symbol transfer means comprising a self-duplicating set of sheets 36 of draughting material having at least two sheets 36, and a pressure transfer means 24, said at least two sheets 36, being disposable between said raised outlines 50 of said symbols elements 30 and said pressure transfer means 24 so that pressure applied by said pressure transfer means 24 causes the outline of said symbols 32 to be transferred to at least one of said two sheets 36 to create an image of said symbols outlines thereon.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: January 30, 1990
    Inventors: Joseph W. K. Smith, Kevin F. Bannister