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:
Jul. 22, 1986
Filed:
Dec. 03, 1984
Stephen B Kuznetsov, Washington, DC (US);
Lee A Kilgore, Murrysville, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A drum type homopolar dynamoelectric machine includes a rotor, a main field coil and an auxiliary field coil. The field coils encircle different portions of the rotor and are supported by a stator structure having a main pole piece for directing magnetic flux produced by current flowing in the main field coil radially into a section of the rotor. A current transfer assembly makes sliding electrical contact with a current collecting zone on the surface of the rotor which is axially positioned between the main and auxiliary field coils. Current flowing in the auxiliary field coil tends to reduce the amount of leakage flux in the current collecting zone produced by current flowing in the main field coil. This reduces undesirable circulating currents in the rotor current collecting zone and the associated current collecting structures.