Toothbrush

Abstract

A toothbrush having a brush section and a handle section that longitudinally extends between a first end distal to the brush section and a second end proximal to the brush section is provided. The handle section includes at least three longitudinally extending edges on the outer surface of the handle section defining at least three longitudinally extending surface areas that each span between two neighboring edges. The at least three edges each twist in the longitudinal direction by a total twist angle lying in the range of from about 80 degrees to about 100 degrees.

1 . A toothbrush comprising:
 a brush section; and   a handle section extending longitudinally between a first end distal to the brush section and a second end proximal to the brush section, the handle section including at least three longitudinally extending edges on the outer surface of the handle section;   wherein the edges on the outer surface of the handle section define at least three longitudinally extending surface areas, each surface area spanning between two neighboring edges; and wherein the at least three edges each twist in the longitudinal direction by a total twist angle lying in the range of from about 80 degrees to about 100 degrees.   
     
     
         2 . The toothbrush according to  claim 1 , wherein the handle section has at least four longitudinally extending edges on the outer surface of the handle section defining four longitudinally extending surface areas that each span between two neighboring edges. 
     
     
         3 . The toothbrush according to  claim 1 , wherein the edges twist by a total twist angle of about 90 degrees. 
     
     
         4 . The toothbrush according to  claim 1 , wherein the handle section is longitudinally divided into a first handle section part and a second handle section part that is adjoining the first handle section part in the longitudinal direction. 
     
     
         5 . The toothbrush according to  claim 4 , wherein the edges twist essentially only on the second handle section part. 
     
     
         6 . The toothbrush according to  claim 1 , wherein a switch button is arranged on one of the surfaces areas. 
     
     
         7 . The toothbrush according to  claim 4 , wherein a surface area formed between two neighboring edges and the first handle section part is arranged in alignment with the brushing orientation of a brush head of the brush section. 
     
     
         8 . The toothbrush according to  claim 1 , wherein the surface areas spanning between the edges of the handle section are convex in a plane perpendicular to a longitudinal extension direction of the toothbrush. 
     
     
         9 . The toothbrush according to  claim 8 , wherein the convexity of the surface areas varies as a function of a parameter that is at least one of the longitudinal position and the radial distance to the longitudinal extension axis of the toothbrush. 
     
     
         10 . The toothbrush according to  claim 1 , wherein the handle section has a waist section. 
     
     
         11 . The toothbrush according to  claim 10 , wherein the waist section is arranged with a longitudinal distance lying in a range of from about 8 cm to about 12 cm from the second end of the handle section. 
     
     
         12 . The toothbrush according to  claim 1 , wherein one of the surface areas is realized by an attachable part. 
     
     
         13 . The toothbrush according to  claim 1 , wherein the handle section has a length lying in the range of from about 13 cm to about 20 cm. 
     
     
         14 . The toothbrush according to  claim 1 , wherein the angular position of the edges varies as a function of the longitudinal position in a non-constant manner. 
     
     
         15 . The toothbrush according to  claim 14 , wherein the angular position of the edges varies faster towards the first end of the handle section.