Patents by Inventor W. Stephen Heitz

W. Stephen Heitz 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).

  • Mobile power generation system
    Patent number: 6700214
    Abstract: A power generation system is described for supplying electrical power to a load from at least one of a generator and a battery. The power generation system includes a power bus coupled to the generator and a bi-directional conversion unit coupled between the power bus and the battery. The bi-directional conversion unit is capable of transitioning between a first direction wherein electrical power flows from the power bus to the battery and a second direction wherein electrical power flows from the battery to the power bus.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: March 2, 2004
    Assignee: Aura Systems, Inc.
    Inventors: Richard J. Ulinski, Khaliqur Rahman, Hugh C. Clarke, W. Stephen Heitz
  • Bi-directional power supply circuit
    Patent number: 6700802
    Abstract: A system is described for controlling the flow of electrical power between two sources. The system includes a circuit coupled between a first source and a second source and a controller subsystem coupled to the circuit. The circuit is capable of transitioning, in a continuous manner, between a first direction wherein electrical power flows from the first source to the second source and a second direction wherein electrical power flows from the second source to the first source. The control subsystem generates control signals to selectively activate switching elements of the circuit to control the direction and the amount of electrical power flowing through the circuit between the first and second sources.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: March 2, 2004
    Assignee: Aura Systems, Inc.
    Inventors: Richard J. Ulinski, Khaliqur Rahman, Hugh C. Clarke, W. Stephen Heitz
  • Mobile power generation system
    Publication number: 20020051368
    Abstract: A power generation system is described for supplying electrical power to a load from at least one of a generator and a battery. The power generation system includes a power bus coupled to the generator and a bi-directional conversion unit coupled between the power bus and the battery. The bi-directional conversion unit is capable of transitioning between a first direction wherein electrical power flows from the power bus to the battery and a second direction wherein electrical power flows from the battery to the power bus.
    Type: Application
    Filed: August 24, 2001
    Publication date: May 2, 2002
    Inventors: Richard J. Ulinski, Khaliqur Rahman, Hugh C. Clarke, W. Stephen Heitz
  • Bi-directional power supply circuit
    Publication number: 20020041502
    Abstract: A system is described for controlling the flow of electrical power between two sources. The system includes a circuit coupled between a first source and a second source and a controller subsystem coupled to the circuit. The circuit is capable of transitioning, in a continuous manner, between a first direction wherein electrical power flows from the first source to the second source and a second direction wherein electrical power flows from the second source to the first source. The control subsystem generates control signals to selectively activate switching elements of the circuit to control the direction and the amount of electrical power flowing through the circuit between the first and second sources.
    Type: Application
    Filed: August 24, 2001
    Publication date: April 11, 2002
    Inventors: Richard J. Ulinksi, Khaliqur Rahman, Hugh C. Clarke, W. Stephen Heitz