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. 30, 2002
Filed:
May. 05, 2000
Applicant:
Inventors:
Stephan Hess, Bad Sackingen, DE;
Christoph Hirsch, Windisch, CH;
Michael Jung, Waldshut-Tiengen, DE;
Johann Schubert, Magenwil, CH;
Hans Zimmerman, late of Monchaltorf, CH;
Assignee:
Alstom, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/06 ; H02K 9/04 ; H02K 9/00 ;
U.S. Cl.
CPC ...
H02K 9/06 ; H02K 9/04 ; H02K 9/00 ;
Abstract
In an air-cooled electrical machine having reverse cooling in a closed cooling circuit, a two-stage blade cascade for the optimum incident flow of cooling air to the rotor ( ) and the rotor winding ( ) is provided between a rotor cap plate ( ) and a rotor shaft ( ). The first blade cascade stage ( ) in the direction of flow is a deceleration cascade having pressure-generating properties, and the following blade cascade stage ( ) in the direction of flow is a deceleration cascade having deflecting properties.