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:
Nov. 03, 2020
Filed:
Nov. 06, 2019
Minebea Mitsumi Inc., Nagano-ken, JP;
Sendy Hanzel, Aldingen, DE;
Tobias Imberger, Engen, DE;
Christoph Fluck, Blumberg, DE;
Hideaki Showa, Nagano, JP;
Daigo Nakajima, Nagano, JP;
Tetsuo Kitamura, Nagano, JP;
MINEBEA MITSUMI INC., Nagano-ken, JP;
Abstract
A spindle motor includes a base plate on which a through hole is formed, a stator assembly provided at an top side of the base plate having a stator core with stator windings, a circuit board provided at the bottom side of the base plate and to which a lead wire of the stator windings drawn from the through hole to the bottom side is connected. An insulating cover sheet is provided at the top side of the base plate for covering the through hole, the insulating cover sheet being passed through by the lead wire, and a sealing material filling the through hole. The insulating cover sheet has a wire hole and an air vent part communicating with the through hole, wherein the air vent part faces at least a portion of an inside opening of the through hole. The wire hole and the air vent part are separated from each other or are connected to form a single opening.