Patents by Inventor Daniel E. Holben

Daniel E. Holben 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).

  • Servo mechanism with differential phase shift feedback
    Patent number: 5204674
    Abstract: A position sensor which can be incorporated into a positional feedback-type servo mechanism includes a mechanical sensor element, an oscillator and first and second phase shifters, which in the disclosed embodiment are variable capacitors. The phase shifters are connected to the sensor element so as to increase and decrease, respectively, a phase shift of the signal generated by the oscillator as the sensor element moves in a given direction. A signal processing circuit converts the phase shifted signals into an output signal which is representative of the position of the sensor element.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: April 20, 1993
    Assignee: Conameter Corporation
    Inventor: Daniel E. Holben