Patents by Inventor Ralph J. Franke

Ralph J. Franke 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).

  • Low cost high performance single board motor controller
    Patent number: 6222332
    Abstract: A motor controller circuit including an energy storage device, a bus protection circuit, an input signal selector, a combiner, a compensator, a modulator, a motor driver circuit, a commutator, a feedback circuitry and a plurality of filters, resistors, inductances, capacitances and optical isolators all contained on a single circuit board for use in controlling a motor with a minimum of cost and space requirements.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: April 24, 2001
    Assignee: Honeywell International Inc.
    Inventors: Mitchell S. Fletcher, Paul T. Marshall, Walter K. White, Ralph J. Franke, Mark A. Villela
  • Current sensing circuit
    Patent number: 5585746
    Abstract: A current sensing circuit is described in which a pair of bipolar transistors are arranged with a pair of field effect transistors such that the field effect transistors absorb most of the supply voltage associated with a load.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: December 17, 1996
    Assignee: Honeywell Inc.
    Inventor: Ralph J. Franke