The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2001
Filed:
Nov. 17, 2000
Joseph Michael Urish, Lima, OH (US);
Jerome John Sirotnik, Dayton, OH (US);
David Wayne Leadingham, Enon, OH (US);
Daniel Lee Downey, Tipp City, OH (US);
Illinois Tool Works, Inc., Glenview, IL (US);
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. The A-phase primary winding second side, B-phase primary winding second side and C-phase primary winding second side arc connected together for delivering current traveling out of one of the second sides into at least one of the other second sides.