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:
Sep. 13, 2016
Filed:
Nov. 08, 2013
Johnson Electric S.a., Murten, CH;
JOHNSON ELECTRIC S.A., Murten, CH;
Abstract
An electromagnetic drive mechanism () comprises a rotor () configured to rotate within a stator (). The rotor () and stator () have multiple poles (), wherein each pole comprises a radial inner portion () and a radial outer portion (). The radial inner portions () and radial outer portions () of the rotor () and stator () have different heights, forming a step () between the radial inner and outer portions of the rotor () and stator (). This configuration allows for overlapping radial surfaces in addition to overlapping axial surfaces during operation of the drive mechanism (), thereby increasing the total overlap area and thus the reluctance torque, and potentially improving response speed while allowing for a more compact device ().