Patents by Inventor Donald K. Murphy

Donald K. Murphy 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).

  • Tuned resonant oscillating mass inflation pump and method of extracting electrical energy therefrom
    Patent number: 5941692
    Abstract: Disclosed is a tuned resonant oscillating mass pump, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: August 24, 1999
    Assignee: Hughes Electronics Corporation
    Inventors: Ross D. Olney, William S. Griffin, Donald K. Murphy
  • Electrical generator system having a tuned resonant oscillating mass
    Patent number: 5934882
    Abstract: A tuned resonant oscillating mass pump is shown, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: August 10, 1999
    Assignee: Hughes Electronics Corporation
    Inventors: Ross D. Olney, William S. Griffin, Donald K. Murphy
  • Tuned resonant oscillating mass inflation pump and method of extracting electrical energy therefrom
    Patent number: 5707215
    Abstract: Disclosed is a tuned resonant oscillating mass pump, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 13, 1998
    Assignee: Hughes Aircraft Company
    Inventors: Ross D. Olney, William S. Griffin, Donald K. Murphy