Toothbrush comprising asymmetrically oriented tufts of bristles

Abstract

A toothbrush includes a handle and a bristle-carrying head part, which are connected to each other by a neck part, the head part having a multiplicity of tufts of bristles consisting of bristles. An anchor is oriented at right angles to the longitudinal axis. Two or more tufts of bristles have a bristle tuft half with bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half.

1 . A toothbrush with a handle and a bristle-carrying head part, which are connected to each other by a neck part,
 the head part having a multiplicity of tufts of bristles comprising bristles that are pointed at both bristle ends, respectively forming two bristle tuft halves and being fastened in the head part by means of an anchor,   wherein the bristles are folded asymmetrically about the anchor and one bristle tuft half has bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half by 0.5 mm to 5 mm.   
     
     
         2 . The toothbrush as claimed in  claim 1 , wherein the one bristle tuft half has bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half by 2 mm to 3 mm. 
     
     
         3 . The toothbrush as claimed in  claim 1 , wherein the bristles have a nominal diameter at the thickest point of the bristle of 0.15 mm to 0.25 mm. 
     
     
         4 . The toothbrush as claimed in  claim 1 , wherein a diameter of the bristles measured at a distance of 0.1 mm from a tip of the pointed bristles corresponds to a value of 5% to 15% of the nominal diameter of the bristles. 
     
     
         5 . The toothbrush as claimed in  claim 1 , wherein a diameter of the bristles measured at a distance of 1 mm from a tip of the pointed bristles corresponds to a value of 15% to 35% of the nominal diameter of the bristles. 
     
     
         6 . The toothbrush as claimed in  claim 4 , wherein the diameter of the bristles measured at a distance of 0.1 mm from the other tip of the pointed bristles corresponds to a value of 5% to 15% of the nominal diameter of the bristles. 
     
     
         7 . The toothbrush as claimed in  claim 5 , wherein the diameter of the bristles measured at a distance of 1 mm from the other tip of the pointed bristles corresponds to a value of 15% to 35% of the nominal diameter of the bristles. 
     
     
         8 . The toothbrush as claimed in  claim 1 , wherein the pointed ends of the bristles are formed by at least one of a chemical or a mechanical pointing process. 
     
     
         9 . The toothbrush as claimed in  claim 1 , wherein the bristles of the multiplicity of tufts of bristles have a cylindrical cross section. 
     
     
         10 . The toothbrush as claimed in  claim 1 , wherein the bristles have a constant diameter of 0.15 mm to 0.25 mm over a region of their length. 
     
     
         11 . A method of producing the toothbrush according to  claim 1  with a handle and a head part which are connected to each other by a neck part, the head part having a multiplicity of tufts of bristles comprising bristles that are pointed at both bristle ends, the method comprising:
 folding the bristles asymmetrically about an anchor, whereby one bristle tuft half has bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half by 0.5 mm to 5 mm; and 
 fastening the tufts of bristles in blind holes in the head part by means of the anchor. 
 
     
     
         12 . The method as claimed in  claim 11 , wherein one bristle tuft half has bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half by 2 mm to 3 mm. 
     
     
         13 . The method as claimed in  claim 11 , wherein the bristles have a nominal diameter at a thickest point of the bristle of 0.15 mm to 0.25 mm. 
     
     
         14 . The method as claimed in  claim 11 , wherein a diameter of the bristles measured at a distance of 0.1 mm from a tip of the pointed bristles corresponds to a value of 5% to 15% of the nominal diameter of the bristles. 
     
     
         15 . The method as claimed in  claim 11 , wherein a diameter of the bristles measured at a distance of 1 mm from a tip of the pointed bristles corresponds to a value of 15% to 35% of the nominal diameter of the bristles. 
     
     
         16 . The method as claimed in  claim 14 , wherein the diameter of the bristles measured at a distance of 0.1 mm from the other tip of the pointed bristles corresponds to a value of 5% to 15% of the nominal diameter of the bristles. 
     
     
         17 . The method as claimed in  claim 15 , wherein the diameter of the bristles measured at a distance of 1 mm from the other tip of the pointed bristles corresponds to a value of 15% to 35% of the nominal diameter of the bristles. 
     
     
         18 . The method as claimed in  claim 11 , wherein the method includes forming the pointed ends of the bristles by at least one of a chemical or a mechanical pointing process. 
     
     
         19 . The method as claimed in  claim 11 , wherein the bristles have a constant diameter of 0.15 mm to 0.25 mm over a region of their length.