FIELD: sanitary and hygienic articles.
SUBSTANCE: toothbrush has handle with narrowed part, head attached to narrowed part, and first unit provided with bundle of bristles and attached to head. Second unit with bundle of bristles is positioned within and concentrically to first unit. Bristles of first unit extend from outer surface by greater distance in comparison with bristles of second unit for creating bowl-shaped structure. Drive provides reciprocating vibrating motion of first and second units in opposite directions in rotating manner in plane substantially parallel to outer surface. Third unit provided with bundle of bristles is attached to head between narrowed part of handle and first and second units in longitudinal direction outside said units.
EFFECT: increased tooth cleaning, polishing and whitening efficiency.
12 cl, 4 dwg
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RU2489954C1 |
