Electrically powdered cleansing apparatus

A - Human Necessities – 61 – C

Patent

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Details

A61C 17/24 (2006.01) A61C 17/26 (2006.01)

Patent

CA 2192476

The invention is directed to an electrically powered dental cleansing apparatus (1) in which a cleansing implement (19) is coupled to a drive sleeve (11) and adapted to be rotated about a longitudinal axis (4). According to the invention, the coupling is effected by means of a resilient element, in particular a spring (21) which includes a slip coupling (27) and/or a buffer zone (28). Under normal conditions, the slip coupling (27) pro- vides a non-rotative connection between the drive sleeve (11) and the cleansing implement (19). However, in the event of the cleansing implement (19) seizing in an interproximal space, for example, the slip coupling (27) will slip, thus avoiding poten- tial damage. The buffer zone (28) acts to prevent displacement of the cleansing implement (19)--although intended by the user-- in cases where, for example, the cleansing implement is posi- tioned against a tooth surface rather than against an interprox- imal space.

L'invention concerne un appareil électrique servant à nettoyer les dents (1), dans lequel un instrument de nettoyage (19) est accouplé à un manchon de commande (11) et peut être entraîné en rotation autour d'un axe longitudinal (4). Selon l'invention, l'accouplement s'effectue à l'aide d'un élément élastique, notamment un ressort (21) qui comporte un élément d'accouplement à glissement (27) et/ou une zone tampon (28). L'élément d'accouplement à glissement (27) constitue en temps normal un assemblage bloqué en rotation entre le manchon de commande (11) et l'instrument de nettoyage (19). Toutefois, si l'instrument de nettoyage (19) devait par exemple être amené à se trouver pris dans un espace interdentaire, l'élément d'accouplement par glissement (27) glisserait et éviterait ainsi tout risque d'altération. La zone tampon (28) permet à l'instrument de nettoyage (19) de ne pas être déplacé, même si l'utilisateur le désire, lorsque l'instrument de nettoyage (19) se trouve par exemple sur une surface dentaire et qu'il n'est pas positionné dans un espace interdentaire.

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