Electric toothbrush

Details Electric toothbrush Electric toothbrush

A - Human Necessities

61

C

A61C 17/26 (2006.01) A61C 17/34 (2006.01)

Patent

CA 2230191

The invention is directed to an electric toothbrush (1) which incorporates a handle (2) and a brush attachment (3). The handle (2) houses an electric motor (8). Protruding from the handle (2) is a shaft (20) that is coupled to the electric motor (8). The brush attachment (3) can be mounted on the handle (2). The brush attachment (3) supports a bristle head (26) which can be coupled to the shaft (20) and from which protrude a multiplicity of bristles (4). In the operating mode, the bristle head (26) describes a rotary movement (49) and a stroke movement (50), with the frequency of the stroke movement (50) being higher, and preferably substantially higher, than the frequency of the rotary movement (49). The stroke movement (50) provides a poking action of the bristles (4) which serves to loosen plaque from dental surfaces. The rotary movement (49) serves to wipe away plaque loosened from the dental surfaces.

L'invention concerne une brosse à dents (1) électrique comportant une partie manche (2) et une partie brosse (3). La partie manche (2) comprend un moteur électrique (8), relié à un arbre (20), en saillie de la partie manche (2). La partie brosse (3) peut être emboîtée sur la partie manche (2). En outre, un porte-soies (26) pouvant être accouplé à l'arbre (20) et d'où une pluralité de soies font saillie, est maintenu sur la partie brosse (3). Lorsque la brosse est en marche, le porte-soies (26) exerce un mouvement rotatif (49), ainsi qu'un mouvement de levée (50), la fréquence du mouvement de levée (50) étant supérieure, de préférence sensiblement supérieure, à celle du mouvement rotatif (49). Le mouvement de levée (50) constitue un mouvement de curage des dents exercé par les soies (4), afin que la plaque dentaire soit éliminée de la surface des dents. Le mouvement rotatif (49) vise à balayer la plaque dentaire détachée de la surface des dents.

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