Patents by Inventor Homer M. Hill, Jr.

Homer M. Hill, Jr. 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).

  • Method for exciting inductive-resistive loads with high and controllable direct current
    Patent number: 3959710
    Abstract: Apparatus and method for transmitting dc power to a load circuit by applying a dc voltage from a standard waveform synthesizer to duration modulate a bipolar rectangular wave generator. As the amplitude of the dc voltage increases, the widths of the rectangular wave generator output pulses increase, and as the amplitude of the dc voltage decreases, the widths of the rectangular wave generator output pulses decrease. Thus, the waveform synthesizer selectively changes the durations of the rectangular wave generator bipolar output pulses so as to produce a rectangular wave ac carrier that is duration modulated in accordance with and in direct proportion to the voltage amplitude from the synthesizer.Thereupon, by transferring the carrier to the load circuit through an amplifier and a rectifier, the load current also corresponds directly to the voltage amplitude from the synthesizer.
    Type: Grant
    Filed: December 31, 1974
    Date of Patent: May 25, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventor: Homer M. Hill, Jr.