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:
Apr. 07, 2026
Filed:
Oct. 04, 2024
Mabuchi Motor Co., Ltd., Chiba, JP;
MABUCHI MOTOR CO., LTD., Chiba, JP;
Abstract
A centrifugal fan includes a first portion in a rotor, and a second portion in a fan unit and having a greater linear coefficient of expansion than that of the first portion. The first portion has a top portion having a flat surface and a first tubular portion. The second portion has a main portion located in a first axial direction with respect to the top portion, a second tubular portion having an inner tube surface facing the outer tube surface of the first tubular portion with a clearance therebetween, an annular rib portion protruding from the main portion in a second axial direction, and a plurality of auxiliary rib portions. A bonding portion of an adhesive is provided between each of an annular end surface of the annular rib portion and the end surfaces of the plurality of auxiliary rib portions facing the flat surface, and the flat surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile