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:
Jan. 31, 2023
Filed:
Mar. 03, 2022
Champ Tech Optical (Foshan) Corporation, Foshan, CN;
Zheng Luo, Foshan, CN;
Xiao-Guang Ma, Foshan, CN;
Yung-Ping Lin, New Taipei, TW;
Yong-Kang Zhang, Foshan, CN;
CHAMP TECH OPTICAL (FOSHAN) CORPORATION, Foshan, CN;
Abstract
A three-bladed impeller providing a cooling airflow in air, with increased heat-dissipating efficiency and reduced noise includes a hub and three blades, the blades are arranged around the hub. Each blade is arched along its axial length from the front of fan to the back and also arched radially from the hub end of each blade to the outside tip. The back edge of each blade includes first and second slots, arranged alternately, the width of each first slot is λ1, the width of each of each second slot is λ2, the comparative sizes between λ2 and λ1 are in a ratio range of 1.6:1 to 1.8:1 (λ2:λ1).