Patents by Inventor Randall L. Calloway

Randall L. Calloway 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).

  • Capacitor based energy storage
    Patent number: 7969105
    Abstract: An electrical storage device comprises a capacitor or capacitor bank capable of storing significant quantities of electricity. An inverter in circuit with the capacitor converts direct energy of the capacitor into alternating current. A variable ratio transformer is in circuit with the output of the inverter to produce an alternating current output of controlled voltage. The impedance of the transformer acts to prolong discharge of the capacitor over a significant time period. To further control the rate of discharge of the energy storage capacitor, an additional capacitor may be provided in the transformer circuit.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: June 28, 2011
    Inventor: Randall L. Calloway
  • Capacitor based energy storage
    Publication number: 20090109712
    Abstract: An electrical storage device comprises a capacitor or capacitor bank capable of storing significant quantities of electricity. An inverter in circuit with the capacitor converts direct energy of the capacitor into alternating current. A variable ratio transformer is in circuit with the output of the inverter to produce an alternating current output of controlled voltage. The impedance of the transformer acts to prolong discharge of the capacitor over a significant time period. To further control the rate of discharge of the energy storage capacitor, an additional capacitor may be provided in the transformer circuit.
    Type: Application
    Filed: October 23, 2008
    Publication date: April 30, 2009
    Inventor: Randall L. Calloway