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. 01, 2020
Filed:
Jul. 30, 2015
Nakanishi Inc., Tochigi, JP;
Akito Nakamura, Tochigi, JP;
NAKANISHI INC., Tochigi, JP;
Abstract
Provided are an electric motor that enables to achieve downsizing while securing performance, and a dental device that includes the electric motor. A brushless slotless electric motorincludes: a statorthat includes a stator coreand a plurality of coilsto, the plurality of coilstobeing disposed at an inside of the stator core; and a rotorthat includes a shaftand a magnet, the rotorbeing rotated around the shaftwith respect to the stator. The plurality of coilstoare adjacent to each other in a rotation direction of the rotorso as not to lap mutually. Lf<Lc is satisfied where Lf is a length of the stator corein an axial direction and Lc is a length of the coil in the axial direction.