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. 16, 2010
Filed:
Sep. 16, 2002
Norman C. Brackett, North Reading, MA (US);
Richard L. Hockney, Lynnfield, MA (US);
Martin W. Frash, Newburyport, MA (US);
Norman C. Brackett, North Reading, MA (US);
Richard L. Hockney, Lynnfield, MA (US);
Martin W. Frash, Newburyport, MA (US);
Beacon Power Corporation, Tyngsboro, MA (US);
Abstract
Featured is a method for passively-repulsively lifting a rotor assembly () of a flywheel energy storage system (), comprising the steps of mechanically coupling a first permanent magnet () to the rotor assembly () and fixedly positioning a second permanent magnet () proximal to the first permanent magnet () so that a repulsive force is generated therebetween causing the first permanent magnet () to move with respect to the second permanent magnet (), thereby causing the rotor assembly () to be lifted to an operating level. The method further includes applying a radial force sufficient in magnitude and direction to oppose a radial force being generated by the permanent magnet repulsive force. Also featured is a passive-repulsive rotor assembly lift system () for a flywheel energy storage system () and a flywheel energy storage system () including such a repulsive rotor lift system ().