Flexible dome toothbrush

A - Human Necessities – 46 – B

Patent

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Details

A46B 9/04 (2006.01) A46B 3/00 (2006.01) A46B 3/20 (2006.01) A46B 5/00 (2006.01) A46B 5/02 (2006.01) B25G 1/00 (2006.01)

Patent

CA 2495026

A toothbrush (10) includes a head (14) having a bristle carrying surface formed from a thin flexible dome shaped membrane (24). An air space (28) is located between the base of the head and the membrane so that the membrane can be capable of flexing to alter its shape during use and then resuming the original shape. In a second embodiment, the head (114) and/or handle (112) have elastomeric portions at least partially surrounding an open area. These portions are readily deflectable under pressure during use to improve handling of the toothrush and orientation of the cleaning elements (124). Alternatively the toothbrush includes a resilient spring-like longitudinal hinge (222) collinear with the longitudinal axis of the toothbrush head so as to separate the head into a pair of side by side longitudinal sections having extending cleaning elements (228) wherein the hinge urges the sections to return to their original position after the hinge has been opened as a result of the cleaning elements contacting teeth.

L'invention concerne une brosse à dents (10) comprenant une tête (14) dotée d'une surface porteuse de poils faite d'une membrane de forme arrondie flexible mince (24). Un espace libre (28) se trouve entre la base de la tête et le membrane de manière que la membrane puisse être capable de se courber afin de modifier sa forme au cours de l'utilisation et de reprendre sa forme initiale. Dans un deuxième mode de réalisation, la tête (114) et/ou le manche (112) présentent des parties élastomères entourant au moins en partie une zone ouverte. Ces parties peuvent rapidement se courber sous l'effet de la pression au cours de l'utilisation afin d'améliorer le maintien de la brosse à dents et l'orientation des éléments de nettoyage (124). Dans une alternative, la brosse à dents comprend un pivot longitudinal en forme de ressort élastique (222) qui est dans le même sens que l'axe longitudinal de la tête de la brosse à dents afin de séparer la tête en une paire de sections longitudinales côte à côte possédant des éléments de nettoyage d'extension (228), le pivot incitant les sections à adopter leur position initiale après l'ouverture du pivot déclenchée par le contact des éléments de nettoyage avec les dents.

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