Patent · US Active

Permanent magnet rotors and methods of assembling the same

US8901795B2 · kind B2 · utility

0Cited by

37References

13Claims

0Family size

Assignee

Regal Beloit America, Inc. · US

Inventors

Subhash Marutirao Brahmavar · Fort Wayne, US
Harold C. Kingrey · Blue Ridge, US
John R. Oakes · Markle, US
Daniel S. Figgins · Fort Wayne, US
Jeffrey A. Hall · Fort Wayne, US
Donald E. Bair · Fort Wayne, US

Key dates

Filing date	Feb 12, 2014
Grant date	Dec 2, 2014
Priority date	—
Expiry date	Feb 12, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49012
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A permanent magnet rotor includes at least one permanent magnet and a rotor core including a first end and a second end. The rotor core includes a plurality of permanent magnet openings that are each configured to receive a permanent magnet. The permanent magnet rotor also includes a first rotor end lamination coupled to the first rotor core end. The first rotor end lamination includes a plurality of inner lamination walls defining a first lamination opening and a second lamination opening circumferentially adjacent the first lamination opening. At least one inner lamination wall includes at least one permanent magnet retention feature configured to secure the permanent magnet within a corresponding permanent magnet opening. The at least one permanent magnet retention feature includes at least one tab extending radially from at least one of the plurality of inner lamination walls within the first rotor end lamination.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.