Interdental brush

Abstract

In an interdental brush, the filaments are retained between two wire sections ( 1 a, 1 b ) which are twisted with one another. The wire sections ( 1 a, 1 b ) have a diameter (D) of 0.3 mm or less and consist of a nickel-free or low-nickel steel. These brushes are distinguished by an increased level of rigidity and an improved restoring force and are stable even if the wire has a small diameter.

1 . Interdental brush in which filaments are retained between two wire sections ( 1   a,    1   b ) which are twisted with one another, characterized in that the wire sections ( 1   a,    1   b ) have a diameter (D) of 0.3 mm or less and consist of a nickel-free or low-nickel steel.  
     
     
         2 . Interdental brush according to  claim 1 , characterized in that the wire sections ( 1   a,    1   b ) have a diameter (D) of more than 0.15 mm.  
     
     
         3 . Interdental brush according to  claim 1  or  2 , characterized in that the wire sections ( 1   a,    1   b ) have a tensile strength of 1000 N/mm 2  or more.  
     
     
         4 . Interdental brush according to  claim 1 , characterized in that the wire sections ( 1   a,    1   b ) have a tensile strength of 1200 N/mm 2  or less.  
     
     
         5 . Interdental brush according to  claim 1 , characterized in that the wire sections ( 1   a,    1   b ) consist of an austenitic steel.  
     
     
         6 . Interdental brush according to  claim 1 , characterized in that the wire sections ( 1   a,    1   b ) are stretched or drawn out.  
     
     
         7 . Method of producing an interdental brush, in which filaments ( 2 ) are introduced between two wire sections ( 1   a,    1   b ) and the wire sections ( 1   a,    1   b ) are twisted with the filaments ( 2 ), characterized in that the wire sections ( 1   a,    1   b ) consist of nickel-free or low-nickel steel.  
     
     
         8 . Method according to  claim 7 , characterized in that the brush is produced from a single piece of wire, the wire being both bent and stretched as it is processed.  
     
     
         9 . Interdental brush according to  claim 2 , characterized in that the wire sections ( 1   a,    1   b ) have a tensile strength of 1200 N/mm 2  or less.  
     
     
         10 . Interdental brush according to  claim 3 , characterized in that the wire sections ( 1   a,    1   b ) have a tensile strength of 1200 N/mm 2  or less.  
     
     
         11 . Interdental brush according to  claim 2 , characterized in that the wire sections ( 1   a,    1   b ) consist of an austenitic steel.  
     
     
         12 . Interdental brush according to  claim 3 , characterized in that the wire sections ( 1   a,    1   b ) consist of an austenitic steel.  
     
     
         13 . Interdental brush according to  claim 4 , characterized in that the wire sections ( 1   a,    1   b ) consist of an austenitic steel.  
     
     
         14 . Interdental brush according to  claim 2 , characterized in that the wire sections ( 1   a,    1   b ) are stretched or drawn out.  
     
     
         15 . Interdental brush according to  claim 3 , characterized in that the wire sections ( 1   a,    1   b ) are stretched or drawn out.  
     
     
         16 . Interdental brush according to  claim 4 , characterized in that the wire sections ( 1   a,    1   b ) are stretched or drawn out.  
     
     
         17 . Interdental brush according to  claim 5 , characterized in that the wire sections ( 1   a,    1   b ) are stretched or drawn out.