logo

For the Inventor, By the Inventor

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 12781768 B1

PDFFull Text
Date of Patent:
Nov. 03, 2026

Filed:

Mar. 14, 2023

Axial fan

Applicant:

Daikin Industries, Ltd, Osaka, JP;

Inventors:

Zuozhou Chen, Osaka, JP;

Kaname Maruyama, Osaka, JP;

Anan Takada, Osaka, JP;

Ryusuke Otaguro, Osaka, JP;

Hideaki Konishi, Osaka, JP;

Hirotaka Tomioka, Osaka, JP;

Takashi Kashihara, Osaka, JP;

Satoshi Nakai, Osaka, JP;

Yuki Yamashita, Osaka, JP;

Assignee:

DAIKIN INDUSTRIES, LTD., Osaka, JP;

Attorney:

Spencer Fane LLP

Primary Examiner:

Sang K Kim

Int. Cl.
CPC ...
F04D 19/00 (2006.01); F04D 29/38 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 29/666 (2013.01); F04D 19/002 (2013.01); F04D 29/384 (2013.01); F04D 29/388 (2013.01);
Abstract

An axial fan includes a hub attachable to a rotary shaft, and five or less blades arranged on the hub. Each blade includes a leading edge located forward in a rotation direction of the rotary shaft, a trailing edge located rearward in the rotation direction of the rotary shaft, and a porous part. A dimension from the leading edge to the trailing edge is a blade chord length, and the porous part is arranged at a position located rearward from the leading edge by 40% or more of the blade chord length.

Find Patent Forward Citations

Quick Actions:

Chen, Zuozhou. (2026). Axial fan (U.S. Patent No. 12781768). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12781768

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

Loading…