Patents Represented by Attorney Michael L. Levine

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  • Ink level sensor
    Patent number: 5689288
    Abstract: A flexible bar connected to an actuator is suspended within an ink reservoir. The bar is preferably mounted in a cantilever or free-standing mode and vibrates in response to signals from the actuator. When the actuator signals are discontinued the bar continues to vibrate and causes the actuator to generate signals that are analyzed to determine the level of ink in the reservoir.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: November 18, 1997
    Assignee: Tektronix, Inc.
    Inventors: Guenther W. Wimmer, Richard S. Meissner, David L. Knierim