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:
Jan. 04, 2022
Filed:
Mar. 14, 2020
Thomas Netter, Winterthur, CH;
Thomas Netter, Winterthur, CH;
Patric Luethi, Zollikon, CH;
Other;
Abstract
An apparatus for detecting a rotation angle, comprising: an annular stator around an axis of revolution Z, comprising: at least a first pole, a second pole, and a third pole arranged at constant azimuthal intervals around the axis of revolution of the annular stator, each of the poles comprising one or more electrical windings, and each of the poles comprising a flange that is a portion of a first surface of revolution around the annular stator's axis of revolution, the flange having an area distribution substantially that, within a coordinate system, of a sin(α) function from a low α bound of about 0 radians to a high α bound of about π radians. The apparatus may comprise a rotor that comprises sectors having the azimuthal extent of one flange and having different magnetic permeabilities. Methods for forming the apparatus and for obtaining measurements are also presented.