Patents by Inventor Norman M. West

Norman M. West 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).

  • Non-contact wet or dry film thickness measuring device using eddy current and ultrasonic sensors
    Patent number: 5062298
    Abstract: A device for measuring the thickness of a wet or dry paint film applied on a substrate without contacting the film is disclosed. The device uses an ultrasonic sensor positioned adjacent to an inductive eddy-current proximity sensor where the ultrasonic sensor measures the distance between the device and the upper surface of the paint film and the proximity sensor measures the distance between the device and the upper surface of the substrate. The two distances measured, when compared, produce the film thickness value. The device is capable of accurately measuring thickness of various paint films, such as flat, glossy and metal-flake containing paint films.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: November 5, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Allan F. Falcoff, Norman M. West