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:
Mar. 16, 2004
Filed:
Jul. 17, 2002
Chin-Hung Chang, Tu-Chen, TW;
Yu-Cheng Chou, Tu-Chen, TW;
Hon Hai Precision Ind. Co., Ltd., Taipei Hsien, TW;
Abstract
A fan includes a frame ( ), a stator ( ), an impeller ( ), and an oil retainer ( ). The frame includes a sleeve ( ) having a bearing ( ) secured therein. The stator surrounds the sleeve, and the impeller surrounds the stator. The impeller includes inner and outer rings ( ). The oil retainer includes a large cylinder ( ) fittingly received between the rings to form a seal between the large cylinder and the outer ring, and a small cylinder ( ) received in the stator. A sealed chamber ( ) is thus defined between the large cylinder and the impeller. A shaft ( ) is fixedly secured in the impeller, and extends through the oil retainer and the bearing. A gap ( ) is defined between the shaft and the small cylinder. In operation, lubricating oil originating from the bearing passes through the gap to the sealed chamber, and flows back to the bearing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile