Patent Number: 7,821,168

Title: Axial gap dynamo electric machine with magnetic bearing

Abstract: An axial gap electric dynamo machine has a horizontally disposed rotor disk that is stabilized at its periphery by a plurality of permanent magnets connected to a ferromagnetic bearing plate that provides an opposing or repulsive force against the rotor magnets. In some preferred embodiments, the bearing plate magnets are configured in a dual band to further enhance the magnetic field that supports the periphery of the spinning rotor.

Inventors: Halstead; Richard (Rohnert Park, CA)

Assignee: Empire Magnetics Inc.

International Classification: H02K 21/12 (20060101); H02K 49/00 (20060101); H02K 7/20 (20060101); H02K 16/00 (20060101); H02K 31/00 (20060101); H02K 1/22 (20060101)

Expiration Date: 2018-10-26 0:00:00