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:
Mar. 13, 1990
Filed:
Apr. 27, 1988
Applicant:
Inventor:
Albert C Sismour, Jr, Casselberry, FL (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 51 ; 310215 ; 310 61 ;
Abstract
Methods and apparatus for reducing noise in a radially ventilated rotor of a dynamoelectric machine are provided by slots formed in the pole regions of the rotor. Members formed of a selected magnetic material, having longitudinally extending ventilating ducts connected with a plurality of ventilating holes, are inserted within each slot and provided with the same flow of cooling fluid which is introduced into the slot contents of the radially ventilated rotor. Thereafter, the flow of fluid through both the slot contents and the pole regions is equalized in order to prevent flow-induced noise.