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. 22, 2005
Filed:
Dec. 19, 2003
Piet Moeleker, Latham, NY (US);
William Dwight Gerstler, Niskayuna, NY (US);
Jivtesh Garg, Schenectady, NY (US);
Piet Moeleker, Latham, NY (US);
William Dwight Gerstler, Niskayuna, NY (US);
Jivtesh Garg, Schenectady, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A machine comprises: a rotor comprising (a) axially extending coils, each coil extending into an endwinding region, (b) a plurality of cavities between the coils in the endwinding region, and (c) a plurality of spacers situated between the coils. Ventilation grooves having an inlet and an outlet are defined in the rotor with at least some of the coils including at least one of the ventilation grooves. The ventilation grooves provide at least one path for gas flow from at least one first cavity to at least one of (i) a second cavity or (ii) a different portion of the first cavity.