US 11,750,070 B2
Variable torque generation electric machine employing tunable Halbach magnet array
Harley C. McDonald, Merritt Island, FL (US); James L. Bailey, Titusville, FL (US); and Matthew C. McDonald, Merritt Island, FL (US)
Assigned to Falcon Power, LLC, Titusville, FL (US)
Filed by Falcon Power, LLC, Titusville, FL (US)
Filed on Dec. 19, 2022, as Appl. No. 18/68,184.
Application 18/068,184 is a continuation of application No. 17/190,362, filed on Mar. 2, 2021, granted, now 11,532,971.
Claims priority of provisional application 63/077,243, filed on Sep. 11, 2020.
Claims priority of provisional application 62/984,270, filed on Mar. 2, 2020.
Prior Publication US 2023/0198347 A1, Jun. 22, 2023
Int. Cl. H02K 11/28 (2016.01); H05K 7/20 (2006.01); H03K 3/011 (2006.01); H03K 17/687 (2006.01); H02K 1/20 (2006.01); H02K 3/24 (2006.01); H02K 5/20 (2006.01); H02K 9/197 (2006.01); H02K 1/16 (2006.01); H02K 1/278 (2022.01); H02K 29/03 (2006.01); H02K 5/10 (2006.01)
CPC H02K 11/28 (2016.01) [H02K 1/16 (2013.01); H02K 1/20 (2013.01); H02K 1/278 (2013.01); H02K 3/24 (2013.01); H02K 5/20 (2013.01); H02K 9/197 (2013.01); H02K 29/03 (2013.01); H03K 3/011 (2013.01); H03K 17/6871 (2013.01); H05K 7/209 (2013.01); H02K 5/10 (2013.01); H02K 2213/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric machine, comprising:
a magnet assembly for generating a magnetic field in one of a rotor or a stator having a plurality of wire windings carrying an electric current, the magnet assembly comprising:
a plurality of fixed magnets disposed in a ring arrangement, the plurality of fixed magnets arranged having alternating poles facing toward the rotor or stator and forming a slot therebetween;
a plurality of rotatable magnets, each of the rotatable magnets having a north pole and a south pole and configured to rotate within the slot; and
a drive assembly for turning the rotatable magnets within the slots to vary the magnetic field generated by the magnet assembly in the rotor or stator, the drive assembly configured to turn the rotatable magnets between a first position wherein the magnetic field in the rotor or stator is augmented and a second position wherein the magnetic field in the rotor or stator is reduced.