Patents Represented by Attorney David M. Materson

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  • Apparatus for determining the position and velocity of a moving object
    Patent number: 5418468
    Abstract: An apparatus for determining the position of a movable object is disclosed. A pair of fixed elements having spaced electrically conductive surfaces form a capacitor. A movable element having an electrically nonconductive composition is connected to the movable object. The movable element is disposed between the fixed element pair. In response to the movement of the movable element, the capacitance value of the variable capacitor changes. A circuit detects the change in capacitance and determines the relative position of the movable object.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: May 23, 1995
    Assignee: Caterpillar Inc.
    Inventors: Thomas M. Baker, George Codina, John F. Szentes