Patents by Inventor Orvil D. Bradley

Orvil D. Bradley 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).

  • Universal penetration test apparatus with fluid penetration sensor
    Patent number: 5866801
    Abstract: A universal penetration test apparatus for measuring resistance of a material to a challenge fluid. The apparatus includes a pad saturated with the challenge fluid. The apparatus includes a compression assembly for compressing the material between the pad and a compression member. The apparatus also includes a sensor mechanism for automatically detecting when the challenge fluid penetrates the material.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: February 2, 1999
    Assignee: Regents of the University of California
    Inventors: Phillip W. Johnson, Joseph F. Stampfer, Orvil D. Bradley