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:
Jun. 09, 2026
Filed:
Mar. 04, 2022
Tau Motors, Inc., Redwood City, CA (US);
Walter Wesley Pennington, III, Portola Valley, CA (US);
Ethan Bagget Swint, Redwood City, CA (US);
Gregory Gordon Stevenson, San Carlos, CA (US);
Anthony Da Costa, Los Altos, CA (US);
Michael Parker Owen, St. Augustine, FL (US);
Matthew J. Rubin, Indianapolis, IN (US);
Matthias Preindl, New York, NY (US);
Tau Motors, Inc., Redwood City, CA (US);
Abstract
A stator defines multiple stator poles with associated stator windings. A rotor defines multiple fixed rotor poles with associated teeth with a ferromagnetic material. The fixed rotor poles have associated rotor windings configured to be energized substantially by the stator. Each of the rotor windings is associated with the tooth. Each of the rotor windings includes an alternating current (AC) coil (or auxiliary coil) configured to carry an AC current induced by an AC current flowing in the stator. A direct current (DC) coil (or primary coil) defines a rotor field energizable by magnetic fields produced by the stator windings to produce relative forces between the rotor and the stator. The DC coil is at least partially powered or controlled by the AC coil.