US2003138324A1PendingUtilityA1

Cooling fan

38
Priority: Jan 24, 2002Filed: Jan 24, 2002Published: Jul 24, 2003
Est. expiryJan 24, 2022(expired)· nominal 20-yr term from priority
Inventors:Hsin-Mao Hsieh
F04D 29/329
38
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A cooling fan is composed of a rotor and a stator received in the rotor. The rotor has a cylindrical housing with an outer periphery and a top surface. The cylindrical housing has a plurality of cutouts defined at the edge of the outer periphery and the top surface and inclined outwards and downwards from the center of the top surface. A plurality of blades is radially formed on the outer periphery of the cylindrical housing and respectively between adjacent cutouts.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A cooling fan being composed of a rotor ( 10 ) and a stator received in the rotor ( 10 ), wherein the rotor ( 10 ) comprises 
 a cylindrical housing ( 11 ) with an outer periphery ( 12 ) and a top surface ( 13 ), the cylindrical housing ( 11 ) having a plurality of cutouts ( 131 ) defined at the edge of the outer periphery ( 12 ) and the top surface ( 13 ) and inclined outwards and downwards from the center of the top surface ( 13 ); and    a plurality of blades ( 14 ) radially formed on the outer periphery ( 12 ) of the cylindrical housing ( 11 ) and respectively between adjacent cutouts ( 131 ).    
     
     
         2 . The cooling fan as claimed in  claim 1 , wherein the blades ( 14 ) each have a cambered upper surface formed thereon.

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