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. 25, 2025
Filed:
Mar. 01, 2024
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Carrier Corporation, Kawasaki, JP;
Yuki Furutani, Hiratsuka, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Toshiba Carrier Corporation, Kawasaki, JP;
Abstract
A centrifugal fan includes a back plate, a shroud, and multiple blades. The multiple blades include first to third blades. The first to third blades include first to third leading edge parts and first to third trailing edge parts. First to third lengths are the length from the first to third leading edge parts to the first to third trailing edge parts. The second length is greater than the first length. The third length is greater than the second length. The numbers of the first to third blades are equal. The total number of the multiple blades is a multiple of 3, and is not less than 6. The first to third blades are arranged in a rotation direction in the order of the first blade, the second blade, and the third blade.