Anti-drip liquid dispenser

A - Human Necessities – 47 – K

Patent

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Details

A47K 5/12 (2006.01)

Patent

CA 2227165

A soap dispenser includes a soap supply, a motor driven pump connected by tubing to the soap supply and a soap output device connected by tubing to the motor driven pump. The electric drive circuit for operating the pump motor includes a sensor for detecting a user's hands positioned to receive soap from the output device. There is a forward motor control circuit connected to the sensor and to the pump motor and responsive to a start signal from the sensor to drive the pump motor in a forward direction to supply soap to the output device. There is a volume adjust circuit connected to the forward motor control circuit and to the sensor to provide a stop signal to the forward motor control circuit a predetermined time period after receipt of a start signal from the sensor. There is a reverse motor control circuit connected to the pump motor and to the volume adjust circuit and responsive to a stop signal from the volume adjust circuit to drive the pump motor in a reverse direction to reverse the flow of soap to the output device. 12

Cette invention concerne un distributeur de savon liquide qui comprend un réservoir de savon, une pompe à moteur raccordée par tubes, d'une part, au réservoir et, d'autre part, au bec du distributeur. Le circuit de commande d'entraînement du moteur de pompe comprend un capteur servant à détecter la présence de mains sous le bec du distributeur, un circuit de commande de pompage raccordé au capteur et qui met en marche le moteur à la réception d'un signal approprié de ce dernier, un circuit de dosage raccordé au circuit de commande de pompage et au capteur et qui sert à transmettre au circuit de commande de pompage un signal d'arrêt de pompage au bout d'un intervalle prédéterminé, et un circuit d'inversion de marche du moteur raccordé au moteur et au circuit doseur et qui intervient à la réception d'un signal d'arrêt envoyé par le circuit doseur pour inverser le sens de rotation du moteur et forcer le retour du savon du bec distributeur vers le réservoir.

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