Patents by Inventor Philip H. Todd

Philip H. Todd 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).

  • Method and apparatus for dynamically displaying consistently dimensioned two-dimensional drawings
    Patent number: 5771342
    Abstract: A dynamic display method and apparatus includes a computer operatively connected to an external measuring device (EMD) or numeric input device. A figure approximating a real object or space and incorporating recognizable geometric elements is sketched by the user and displayed on the computer display screen. A specified geometric element of the figure is user selected and dimensioned by operation of an external measuring device. A constraint engine subsystem within the computer incorporates the dimensioning information into the figure and redraws the figure as each dimension is received from the external measuring device.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 23, 1998
    Assignee: Saltire Software
    Inventor: Philip H. Todd
  • Dimension analysis of drawings
    Patent number: 4951227
    Abstract: Dimensioned sketches are analyzed using graph theoretical concepts to determine whether dimension constraints are sufficient to define unique geometry and are nonredundant.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: August 21, 1990
    Assignee: Tektronix, Inc.
    Inventor: Philip H. Todd