Patents by Inventor Stephen B. McWilliams

Stephen B. McWilliams 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).

  • Turf impact analysis system
    Patent number: 5736631
    Abstract: A system for impact analysis of soil surfaces includes a Clegg impact hammer, an accelerometer mounted on the hammer, an analog to digital converter to digitize the deceleration signal of the accelerometer, and a computer to store the digitized curve samples and to calculate selected impact parameters from the curve samples. The apparatus includes a notebook computer and additional components all of which are portable to enable storage of a great number of curve samples and calculation of the impact parameters for a large number of test points in the field immediately after each hammer drop.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: April 7, 1998
    Assignee: Turf Diagnostics & Design, Inc.
    Inventors: Charles R. Dixon, Stephen B. McWilliams