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. 25, 2023
Filed:
May. 26, 2022
Applicant:
Champ Tech Optical (Foshan) Corporation, Foshan, CN;
Inventors:
Xiao-Guang Ma, Foshan, CN;
Zheng Luo, Foshan, CN;
Yung-Ping Lin, New Taipei, TW;
Yong-Kang Zhang, Shenzhen, CN;
Assignee:
CHAMP TECH OPTICAL (FOSHAN) CORPORATION, Foshan, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 29/34 (2006.01);
U.S. Cl.
CPC ...
F04D 29/34 (2013.01); F04D 29/384 (2013.01); F05D 2260/961 (2013.01);
Abstract
A cooling fan creating a more stable airflow for heat-removing purposes, with reduced noise of operation, comprises a rotor hub and preferably an odd number of blades mounted on periphery of the rotor hub in unequal intervals. Adjacent blades are configured with different shapes, reducing the noise generated during operation without affecting the cooling effect.