Patents by Inventor Daniel Lee Downey

Daniel Lee Downey 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).

  • Transformer/rectifier for aircraft ground power unit
    Patent number: 6320773
    Abstract: A ground power unit for providing dc power for aircraft includes a source of 3-phase ac power and a transformer/rectifier arrangement for converting 3-phase ac power to dc power. The transformer/rectifier arrangement includes an A-phase transformer formed by an A-phase magnetic member, an A-phase primary winding having first and second sides, and an A-phase secondary winding; a B-phase transformer formed by a B-phase magnetic member, a B-phase primary winding having first and second sides, and a B-phase secondary winding; and a C-phase transformer formed by a C-phase magnetic member, a C-phase primary winding having first and second sides, and a C-phase secondary winding. The A-phase primary winding first side is connected to receive A-phase power, the B-phase primary winding first side is connected to receive B-phase power, and the C-phase primary winding first side is connected to receive C-phase power.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: November 20, 2001
    Assignee: Illinois Tool Works, Inc.
    Inventors: Joseph Michael Urish, Jerome John Sirotnik, David Wayne Leadingham, Daniel Lee Downey