Ceiling fan with high efficiency ceiling fan blades

Abstract

A ceiling fan including a motor having a rotatable rotor, a plurality of ceiling fans blades having a thickness, the blades connected to the rotor to rotate therewith and each of the ceiling fan blades comprising a thin edge along its leading edge that is thinner than the thickness of the ceiling fan blade to present less resistance and produce less turbulence and achieve high efficiencies.

1 . A ceiling fan comprising in combination: 
 a motor having a rotatable rotor;    a plurality of ceiling fans blades having a thickness, said blades being connected to said rotor to rotate therewith; and    each of said ceiling fan blades comprising a thin edge along its leading edge that is thinner than said thickness of said ceiling fan blade to present less resistance and produce less turbulence and achieves high efficiencies.    
   
   
       2 . The ceiling fan as set forth in  claim 1 , wherein said ceiling fan blades each comprises a generally planar elongated configuration.  
   
   
       3 . The ceiling fan as set forth in  claim 1 , wherein said ceiling fan blades each comprises a generally curvilinear elongated configuration.  
   
   
       4 . The ceiling fan as set forth in  claim 1 , wherein said thin edge of each of said ceiling fan blades is at least as great and as an industry standard minimum thickness for leading edges of ceiling fan blades.  
   
   
       5 . The ceiling fan as set forth in  claim 1 , wherein said thin edge gradually tapers into said thickness of said ceiling fan blade.  
   
   
       6 . The ceiling fan as set forth in  claim 1 , wherein said thin edge steps into said thickness of said ceiling fan blade.  
   
   
       7 . The ceiling fan as set forth in claims  5  or  6  wherein said thin edge is centered relative to said thickness of said blade.  
   
   
       8 . The ceiling fan as set forth in claims  5  or  6  wherein said thin edge is positioned at one surface of said fan blade.  
   
   
       9 . The ceiling fan as set forth in  claim 8 , wherein said thin edge is position at a lower surface of said fan blade.  
   
   
       10 . The ceiling fan as set forth in  claim 1 , wherein each fan blade comprises an upper surface having a generally apex configuration defined by two planar surfaces formed at an angle leading from the opposing leading edges across the width of said fan blade to form an apex along a center line of the fan blade.  
   
   
       11 . The ceiling fan as set forth in  claim 10 , wherein said thin edge comprises a reduced thickness which is equal to or appreciably greater than the minimum thickness mandated by applicable ceiling fan safety regulations.  
   
   
       12 . The ceiling fan as set forth in  claim 1 , wherein a trailing edge of each of said ceiling fan blades comprises a thin edge.  
   
   
       13 . A fan blade comprising a thin leading edge positioned in the middle of a thickness of the blade.  
   
   
       14 . The fan blade as set forth in  claim 13 , wherein a transition area between said thin leading edge and opposing surfaces of said fan blade comprises a concave step.  
   
   
       15 . The fan blade as set forth in  claim 13 , wherein a transition area between said thin leading edge and opposing surfaces of said fan blade comprises a generally planar transition.  
   
   
       16 . The fan blade as set forth in claims  14  or  15 , wherein said thin leading edge is sanded.  
   
   
       17 . The fan blade as set forth in claims  14  or  15 , wherein said thin leading edge is chamfered.  
   
   
       18 . The fan blade as set forth in  claim 13 , wherein said thin leading edge is positioned closer to a bottom surface of said fan blade and wherein a transition area extends between said thin leading edge and an upper surface of said fan blade.  
   
   
       19 . The fan blade as set forth in claims  14 ,  15  or  18 , wherein said transition area comprises a stepped configuration.  
   
   
       20 . The fan blade as set forth in claims  14 ,  15  or  18 , wherein said transition area comprises a generally planar transition.  
   
   
       21 . The fan blade as set forth in  claim 20 , wherein any sharp edges of said thin leading edges are sanded or chamfered.  
   
   
       22 . The fan blade as set forth in  claim 13 , wherein a trailing edge comprises a thin edge.  
   
   
       23 . The fan blade as set forth in  claim 13 , comprising a generally apex configuration wherein an upper surface of said fan blade comprises two angled surfaces extending from opposing thin leading edges to a longitudinal apex.  
   
   
       24 . The fan blade as set forth in  claim 23 , wherein said longitudinal apex is positioned at or proximate to a longitudinal center of the fan blade.  
   
   
       25 . The fan blade as set forth in claims  13  comprising a generally planar ceiling fan blade with its opposing surfaces being generally parallel to each other.  
   
   
       26 . The fan blade as set forth in  claim 13  comprising a curvilinear ceiling fan blade.  
   
   
       27 . The fan blade as set forth in claims  25  or  26 , wherein an upper surface and a lower surface of the fan blades produces a lifting force when rotated.  
   
   
       28 . The fan blade as set forth in claims  25  or  26 , wherein said fan blade comprises an increasing twist formed along its elongated configuration from its tip to its root.