Patents by Inventor Walter P. T. North

Walter P. T. North 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).

  • Optical triangulation gear inspection
    Patent number: 4547674
    Abstract: This invention describes novel method and apparatus for inspecting gear geometry via optical triangulation. Preferred machine construction uses specialized geometrical relationships of sensor to gear, and specialized high accuracy photodetector array based laser triangulation sensor units of large range and high response speed.
    Type: Grant
    Filed: October 12, 1982
    Date of Patent: October 15, 1985
    Assignee: Diffracto Ltd.
    Inventors: Timothy R. Pryor, Omer L. Hageniers, Walter P. T. North