Patent ID: 9468286
Filing Date: 2016-10-18
CPC Classification: A46B,A61C

Claim Text:
1. Toothbrush apparatus having multiple rotatable brushing systems, comprising a body whereon is attached a head ( 1 ) provided with adjacent counter-rotating brushes ( 2 , 2 ′), of overall cylindrical outer shape, with longitudinal axes parallel to one another, with each brush ( 2 , 2 ′) being driven in rotation by a shaft ( 4 , 4 ′) and supported at each of its ends by a bearing ( 3 , 3 ′, 5 , 5 ′) forming part of a holder ( 6 ) which determines the distance between the longitudinal axes of said brushes, said holder ( 6 ) comprising at least two flexible arms ( 6 a , 6 b , 6 c , 6 d ) oriented substantially perpendicular to said longitudinal axes, in such a way that their respective ends constitute said bearings, said flexible arms being connected to a base ( 6 e ) able to provide for the fastening of said holder ( 6 ) onto the head ( 1 ) wherein said holder further comprises a flexible element ( 9 , 9 ′) partially surrounding at least one of said brushes ( 2 ), wherein said flexible element is made from a thermoplastic elastomere material that has a hardness between 20 and 35 shore D, wherein said flexible element is integrally formed with said holder ( 6 ) and partially surrounds each of said brushes ( 2 , 2 ′), wherein said flexible element ( 9 , 9 ′) has a semi-cylindrical shape arranged at a constant distance of the cylindrical outer surface of at least one of said brushes, wherein said flexible element ( 9 , 9 ′) covers between one-third and one-half of the outer surface of at least one of said brushes, wherein said flexible element ( 9 , 9 ′) has an elasticity module between 10 and 30 MPa, wherein said flexible element ( 9 , 9 ′) is made from polyether block amide, and wherein said flexible element ( 9 , 9 ′) has an average thickness of a magnitude of a few μm (micrometers).