Patents Represented by Attorney David G. Merchant, Gould, Smith, Edell, Welter & Schmidt Schmaltz

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  • 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