US2008213100A1PendingUtilityA1

Fan Blade Structure

26
Assignee: LIAO HSIEN-MINGPriority: Mar 2, 2007Filed: Feb 29, 2008Published: Sep 4, 2008
Est. expiryMar 2, 2027(~0.6 yrs left)· nominal 20-yr term from priority
Inventors:Hsien-Ming Liao
F04D 29/38F04D 29/325
26
PatentIndex Score
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Claims

Abstract

A fan blade comprises a first board and a second board, wherein the density of the first board is greater than that of the second board, so that the first board is used to strengthen the structure strength of the second board. Therefore, the fan blade is less likely to deform and can maintain its wind guide structure, and its life span is prolonged.

Claims

exact text as granted — not AI-modified
1 . A fan blade structure comprising:
 a first board formed with a jointing surface on one side thereof, and   a second board being different in density from the first board and formed with a joint surface on one side thereof, the jointing surface of the first board being jointed to that of the second board.   
     
     
         2 . The fan blade structure as claimed in  claim 1 , wherein the first board is a high density board. 
     
     
         3 . The fan blade structure as claimed in  claim 1 , wherein the first board is a particle board. 
     
     
         4 . The fan blade structure as claimed in  claim 1 , wherein the second board is a plywood board. 
     
     
         5 . The fan blade structure as claimed in  claim 1 , wherein the second board is a wood board.

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