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:
Mar. 05, 2024
Filed:
Feb. 07, 2022
Daikin Industries, Ltd., Osaka, JP;
Hideaki Konishi, Osaka, JP;
Naomi Abe, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
An axial fan rotates around a rotating shaft. The axial fan includes a hub, and a plurality of blades extending in a radial direction from the hub. Each blade includes a leading edge, a trailing edge including a depression, and a reinforcing protrusion located at least forwardmost and having a wall thickness thicker than a surrounding portion. As viewed along a rotating shaft direction, when a first virtual line and a second virtual line perpendicular to the radial direction are drawn, the reinforcing protrusion extends radially inside of the first virtual line and extends radially outside of the second virtual line, the first virtual line and the second virtual line respectively pass through a rearmost first endpoint in the rotation direction on a radially inside of a rear end that substantially overlaps the depression, and a rearmost second endpoint on a radially outside of the rear end.