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. 17, 2001
Filed:
Mar. 26, 1997
Richard L. Hockney, Lynnfield, MA (US);
Stephen B. Nichols, Charlestown, MA (US);
Geoffrey B. Lansberry, Cambridge, MA (US);
Francis E. Nimblett, Beverly, MA (US);
Dariusz A. Bushko, Hopkinton, MA (US);
Gita P. Rao, Belmont, MA (US);
Luka Serdar, Lexington, MA (US);
Michael E. Amaral, Norwood, MA (US);
William E. Stanton, Waltham, MA (US);
James O'Rourke, Woburn, MA (US);
SatCon Technology Corporation, Cambridge, MA (US);
Abstract
A power supply device for providing uninterrupted power for a period of time is disclosed. The power supply device has a controller and a flywheel device. The flywheel device has a housing that contains a flywheel rotor and a motor/generator rotor. The flywheel rotor and the motor/generator rotor are mounted on a common shaft. An active axial magnetic bearing is located to support the shaft for frictionless rotation. The bearing provides support for the shaft, the flywheel rotor and motor/generator rotor. The axial magnetic bearing is attached to the housing and provides, in combination with the motor/generator rotor, a flux path and magnetic field to exert a magnetic force to lift the motor/generator rotor and the shaft on which it is mounted.