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. 11, 2008
Filed:
Oct. 06, 2006
Applicant:
Chan Ching, Taipei Hsien, TW;
Inventor:
Chan Ching, Taipei Hsien, TW;
Assignee:
Perfect Union Co., Ltd., Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/09 (2006.01);
U.S. Cl.
CPC ...
Abstract
A specially designed rotation speed controller for fans, in addition to basic components like variable resistor, the controller has also been equipped with special components such as TRIAC, micro limit switch, and glass tube fuse, which allows said controller to precisely control the on/off status and the rotation speed of the fan, and the controller also provides power-off protection against power overload.