Tooth brush having rotary brush device

Abstract

A tooth brush includes a handle, a shank attached to the handle and having a housing, a casing disposed in the housing, and a paddle wheel rotatably received in the casing and having a shaft extended out of the casing. A rotary brush device is attached to the shaft of the paddle wheel, and includes a number of brush members for teeth brushing purposes. A water supplying device may be used to supply water into the casing, to drive and to rotate the paddle wheel relative to the casing, and to drive the brush members of the rotary brush device to brush teeth. The casing includes a cover having one or more orifices for allowing water to flow out through the orifices of the cover of the casing.

1 . A tooth brush having a handle, said tooth brush comprising: 
 a shank for attaching to the handle, and including a housing provided thereon and having a space formed in said housing,    a cover attached to said housing to enclose said space of said housing, and said cover including at least one orifice formed therein, for allowing water to flow out through said at least one orifice of said cover,    a paddle wheel rotatably received in said space of said housing, and including a shaft extended out of said cover,    a rotary brush device attached to said shaft of said paddle wheel, and including a plurality of brush members provided on for teeth brushing purposes, and    water supplying means for supplying water into said space of said housing, to drive and to rotate said paddle wheel relative to said housing, and to drive said brush members of said rotary brush device to brush teeth.    
   
   
       2 . The tooth brush as claimed in  claim 1 , wherein said rotary brush device includes a base having a central hub provided thereon, and engaged onto said shaft of said paddle wheel, to attach said rotary brush device to said shaft of said paddle wheel.  
   
   
       3 . The tooth brush as claimed in  claim 2 , wherein said shaft of said paddle wheel includes a peripheral groove formed therein, said rotary brush device includes at least one projection extended into said central hub thereof, to engage into said peripheral groove of said shaft of said paddle wheel, to attach said rotary brush device to said shaft of said paddle wheel.  
   
   
       4 . The tooth brush as claimed in  claim 2 , wherein said rotary brush device includes an outer peripheral rim, and at least one bar coupled between said central hub and said outer peripheral rim, to form at least one opening in said base, and to allow water to flow through said at least one opening of said base.  
   
   
       5 . The tooth brush as claimed in  claim 4 , wherein said at least one bar of said rotary brush device includes an inclined surface formed therein, and facing toward said paddle wheel.  
   
   
       6 . The tooth brush as claimed in  claim 1 , wherein said housing includes a casing received in said space thereof, and said cover is attached to said casing.  
   
   
       7 . The tooth brush as claimed in  claim 6 , wherein said casing includes an inlet port directed toward an outer peripheral portion of said paddle wheel, to allow water to flow onto said outer peripheral portion of said paddle wheel, and to effectively rotate said paddle wheel relative to said casing.  
   
   
       8 . The tooth brush as claimed in  claim 7 , wherein said water supplying means includes a water pump coupled to said inlet port of said casing, to pump water into said inlet port of said casing.  
   
   
       9 . The tooth brush as claimed in  claim 1 , wherein said housing includes a plate attached thereto and having a plurality of stationary brush members provided on, for teeth brushing purposes.  
   
   
       10 . The tooth brush as claimed in  claim 9 , wherein said housing includes a recess formed therein, and a partition extended into said recess thereof, to form a peripheral shoulder in said housing, and to receive said plate.