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:
Dec. 30, 2025
Filed:
Dec. 25, 2023
Applicant:
Richtek Technology Corp., Hsinchu County, TW;
Inventors:
Ta-Yung Yang, Taoyuan, TW;
I-Chi Lin, New Taipei, TW;
Chang-Yi Lin, Hsinchu, TW;
Shih-Jen Yang, New Taipei, TW;
Assignee:
RICHTEK TECHNOLOGY CORP., Hsinchu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); H02P 8/36 (2006.01);
U.S. Cl.
CPC ...
F04D 27/001 (2013.01); F04D 27/004 (2013.01); H02P 8/36 (2013.01);
Abstract
A method for predicting failure of a cooling fan includes driving a motor of the cooling fan based on a control speed, generating a first speed according to an average speed of the motor, generating a first current according to an average current of the motor, retrieving a system coefficient from a memory, generating a current threshold according to the first speed and the system coefficient, and triggering an alarm signal if the first current exceeds the current threshold by a threshold amount.