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Dual agitator drive system with worm gear
   
Document Number
US Patent 6918155
Issued Date
July 19, 2005
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Abstract
A floor cleaning apparatus such as an upright vacuum cleaner, an extractor or a powerhead for a canister vacuum cleaner includes twin agitators that are operatively connected together by means of a worm gear drive assembly.
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Number of Claims:
24
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Published
July 19, 2005
Application Number
10/251,400
Filed
September 20, 2002
US Classification
15/384   15/389 15/41.1 15/50.3 15/52.1
Int'l Classification
A47L   9/04   (20060101)   A47L   5/30   (20060101)   A47L   5/22   (20060101)  
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USPTO Field of Search
15/384   15/389   15/390   15/391   15/41.1   15/52.1   15/50.3   15/82   15/340.4  
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