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:
Feb. 17, 2009
Filed:
Jul. 07, 2006
Chien-jung Chen, Jen-Wu Hsiang, TW;
Hsien-wen Liu, Taichung, TW;
Hui-chao Hsu, Kaohsiung, TW;
Yen Sun Technology Corp., Jen-Wu Hsiang, Kaohsiung Hsien, TW;
Abstract
A cooling fan includes: a casing having a surrounding wall that defines an accommodating space; a circuit board disposed in the accommodating space and including a substrate and a control circuit, the substrate having a center portion that has a peripheral edge, and a plurality of spaced apart connecting beams that extend from the peripheral edge of the center portion and that are connected directly and securely to the surrounding wall; a hollow shaft secured directly to and protruding from the circuit board into the accommodating space; a stator mounted securely on the center portion of the substrate of the circuit board and coupled to the control circuit; a fan blade unit disposed in the accommodating space and including an annular hub journalled rotatably to the hollow shaft; and a rotor mounted on the hub.