Power toothbrush with adjustable operation

A - Human Necessities – 61 – C

Patent

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Details

A61C 17/32 (2006.01) A61C 17/22 (2006.01) H02P 7/00 (2006.01)

Patent

CA 2572120

The system changes frequency of the toothbrush to adjust the amplitude of motion of the brush portion of the toothbrush. The change in frequency occurs either manually or automatically. In the manual embodiment, the user, via a switch and internal circuitry, can adjust the operating frequency of the toothbrush which results in a change of amplitude to a value which is most comfortable to the user. In the automatic mode, the resonant frequency of the toothbrush is determined upon initiation of the operation of the toothbrush. The resonant frequency value is then offset by a selected amount, usually higher than the resonant frequency; this offset frequency is the operating frequency of the toothbrush.

La présente invention permet de modifier la fréquence d'une brosse à dents pour adapter l'amplitude du mouvement de la partie brosse de la brosse à dents. La modification de fréquence peut être effectuée manuellement ou automatiquement. Dans le mode de réalisation manuel, l'utilisateur, via un commutateur et un circuit interne, peut régler la fréquence de fonctionnement de la brosse à dents de manière à obtenir un changement d'amplitude d'une valeur qui est la plus confortable pour l'utilisateur. En mode automatique, la fréquence résonante est déterminée lors de la mise en marche de la brosse à dents. La valeur de la fréquence résonante est alors décalée d'une quantité choisie, généralement supérieure à la fréquence résonante, laquelle fréquence décalée représente la fréquence de fonctionnement de la brosse à dents.

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