US Patent 7338049 Self-cooling ferrfluid seal
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Patent Inventor Names
Zhixin Li0
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Patent abstract
A self-cooling ferrofluid seal includes a housing having a housing case and an external pole piece integrally connected to the housing case where the housing case has a plurality of heat dissipating surfaces, a magnetic circuit within the housing formed in conjunction with the external pole piece, a rotatable shaft having one or more fan blades where the rotatable shaft is coaxially aligned within the housing, and a quantity of magnetic fluid between the rotatable shaft and the external pole piece forming a ferrofluid seal.
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US Patent 07338049 Self-cooling ferrfluid seal US Patent 7338049 Self-cooling ferrfluid seal
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Patent Number
073380490
Patent Number
73380490
Edits on 23 Sep, 2022
Golden AI
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Patent Jurisdiction
Patent Number
073380490
Date of Patent
March 4, 2008
0Patent Application Number
111619100
Date Filed
August 22, 2005
0Official Website
Patent Primary Examiner
Edits on 17 Jun, 2022
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US Patent 07338049 Self-cooling ferrfluid seal
Infobox
Is a
Patent jurisdiction
Patent number
07338049
Date of patent
March 4, 2008
Patent application number
11161910
Date Filed
August 22, 2005
Patent primary examiner
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