Patents by Inventor Allen Face

Allen Face 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).

  • Rolling digital surface measurement apparatus
    Patent number: 5535143
    Abstract: A rolling digital surface measurement apparatus which measures and records the second elevation differences between a plurality of sequentially oriented, regularly spaced, co-linear points which lie on the surface, and which then computes the elevations of those points relative to a datum line established relative to any two points in the sequence by assuming that the mean curvatures of the tested surface are equal to zero in order to remove the inevitable effects of error compounding.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: July 9, 1996
    Inventor: Allen Face