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:
Oct. 02, 2012
Filed:
May. 20, 2009
Ravishanker Krishnamoorthy, Singapore, SG;
Foo Leng Leong, Singapore, SG;
Edy Susanto, Singapore, SG;
Yayue Zhang, Singapore, SG;
Cheng Yong Teoh, Singapore, SG;
Ravishanker Krishnamoorthy, Singapore, SG;
Foo Leng Leong, Singapore, SG;
Edy Susanto, Singapore, SG;
Yayue Zhang, Singapore, SG;
Cheng Yong Teoh, Singapore, SG;
Marvell International Ltd., Hamilton, BM;
Abstract
A control system for a fan includes a control housing that is external to a fan housing for the fan. At least one fan control module is within the control housing and communicates remotely with terminals within the fan housing via at least one wire. The at least one fan control module includes a detection module. The detection module detects induced voltages in at least one of a plurality of stator coils within the fan housing via the at least one wire without receiving signals from a sensor in the fan housing.