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. 23, 2021
Filed:
Aug. 30, 2018
Goodrich Actuation Systems Limited, Solihull, GB;
Maamar Benarous, Coventry, GB;
GOODRICH ACTUATION SYSTEMS LIMITED, Solihull, GB;
Abstract
An electric motor and a method of making the electric motor is disclosed herein. The motor comprises a stator and a rotor being arranged coaxially, with said rotor provided internally of said stator. The stator having one or more stator teeth extending radially inwardly towards said rotor. The rotor has a plurality of magnets forming an outer rotor surface. A first face of the or each stator tooth faces the outer rotor surface. An electrically-conductive non-magnetic damper bar is partially embedded in the or each stator tooth, the or each damper bar having an outer damper bar surface. A groove is formed in the first face of the or each stator tooth to at least partially expose the outer damper bar surface. The groove can improve flux linkage between the rotor and the damper bars and thus improve the damping of the electric motor.