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:
Aug. 03, 2004
Filed:
Mar. 15, 2002
David Arel, Granby, CT (US);
Hamilton Sundstrand, Windsor Locks, CT (US);
Abstract
A permanent magnet alternator (PMA) includes a stator which rotates with a propeller shaft and a rotor which is mounted within the stator and rotates with a gas turbine engine output shaft. The rotor is driven at the relatively high speed of the turbine output shaft while the stator is driven at a relatively slow speed of the propeller shaft as reduced by an in-line gearbox. The great difference in speed between the propeller shaft and the turbine output shaft results in a compact PMA which provides significant electrical power output. As the stator of the PMA rotates with the propeller shaft, power is supplied directly to the rotating hub and blades without the heretofore necessary slip ring and associated electrical transmission components.