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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.:

US 12704130 B1

PDFFull Text
Date of Patent:
Aug. 11, 2026

Filed:

Oct. 04, 2024

Centrifugal fan

Applicant:

Mabuchi Motor Co., Ltd., Chiba, JP;

Inventors:

Kenji Shiraki, Chiba, JP;

Tetsushi Yoshikawa, Chiba, JP;

Sakie Kawakami, Chiba, JP;

Assignee:

MABUCHI MOTOR CO., LTD., Chiba, JP;

Attorney:

HAUPTMAN HAM, LLP

Primary Examiner:

Nathaniel E Wiehe

Assistant Examiner:

Theodore C Ribadeneyra

Int. Cl.
CPC ...
F04D 17/08 (2006.01); F04D 29/28 (2006.01);
U.S. Cl.
CPC ...
F04D 29/281 (2013.01); F04D 17/08 (2013.01);
Abstract

A centrifugal fan includes a first portion provided in a rotor, and a second portion provided in a fan unit and having a greater linear coefficient of expansion than that of the first portion. The first portion has a first top portion and a first tubular portion. The second portion has a second top portion and a second tubular portion. The second tubular portion has an inner tube surface facing an outer tube surface of the first tubular portion with a first clearance therebetween. The first top portion has a first flat surface, and the second top portion has a second flat surface facing the first flat surface. The first top portion or the second top portion is provided with a protrusion. The first flat surface and the second flat surface are bonded and fixed to each other with an adhesive provided in a second clearance formed by the protrusion.

Find Patent Forward Citations

Shiraki, Kenji. (2026). Centrifugal fan (U.S. Patent No. 12704130). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12704130

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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