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, 2011
Filed:
Mar. 10, 2009
Costin Ifrim, Hamden, CT (US);
Michael R. Pothier, Leominster, MA (US);
James S. Smith, Old Lyme, CT (US);
Art O'leary, Leominster, MA (US);
Costin Ifrim, Hamden, CT (US);
Michael R. Pothier, Leominster, MA (US);
James S. Smith, Old Lyme, CT (US);
Art O'Leary, Leominster, MA (US);
DRS Power Technology, Inc., Fitchburg, MA (US);
Abstract
A retention system in which rotor pole pieces are retained within complementarily shaped channels in a rotor hub, permanent magnets are secured between the pole pieces and within clamp members, and wedge-shaped pieces are used to apply positive locking forces along the axial length of each clamp member and of adjacent pole pieces. A curable resin preferably in disposed within gaps between the permanent magnets and the clamp members.