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:
Sep. 18, 2007
Filed:
May. 31, 2005
Applicant:
Reinhard Joho, Rombach, CH;
Inventor:
Reinhard Joho, Rombach, CH;
Assignee:
Alstom Technology Ltd., Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/04 (2006.01); H02K 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gas-cooled electric machine includes a generator housing, a rotor shaft, at least one axial fan disposed on the rotor shaft inside the generator housing and having a hub, and a pressure boosting apparatus associated with the axial fan and configured to raise an absolute pressure in a generator interior. The pressure boosting apparatus has at least one flow channel between an interior of the hub and the generator interior and is at least partially delimited by the hub. A flow inlet into the flow channel and a flow outlet out of the flow channel are disposed radially at a distance with respect to each other.