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MULTIPLE WINDMILL
   
Document Number
US Patent 3837112
Issued Date
September 24, 1974
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Inventors
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Abstract
A multiple windmill in which three fan wheels are mounted on a common rotatable frame and are each rotatably linked to a common fixed wheel or gear. The fan wheels are each rotated by the force of the wind and in turn rotate the common frame in which they are mounted. The device may be in the form of a display device such as an ornamental lawn device, with the exterior of each fan blade marked so as to create ornamental patterns when the blades and the frame are rotated by the wind. The common stationary drive wheel serves to rotate all three blades at a common velocity.
Drawing
MULTIPLE WINDMILL - US Patent 3837112 Drawing
Drawing from US Patent 3837112
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Number of Claims:
3
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Owner
Published
September 24, 1974
Application Number
05/344,779
Filed
March 26, 1973
US Classification
446/218  
Int'l Classification
F03D   1/00   (20060101)   F03D   1/02   (20060101)   A63H   33/00   (20060101)   A63H   33/40   (20060101)  
Assistant Examiner
Attorney/Law Firm
USPTO Field of Search
46/58   40/39  
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Claims
Description
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