Self-evacuating vacuum cleaner

A - Human Necessities – 47 – L

Patent

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Details

A47L 11/30 (2006.01) A47L 9/00 (2006.01)

Patent

CA 2268125

A vacuum cleaner has an electric motor driving an air impeller (74) for creating suction and a pump (104) which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank (32). The vacuum cleaner also includes a mechanical shut-off and override assembly (144) that automatically shuts off the motor if the liquid level in the tank gets too high. A user, however, can mechanically override this automatic shut-off in order to continue pumping liquid out of the tank (32). A priming apparatus is disposed in the tank in fluid communication with the pump, and a valve is selectively actuable to establish a pressure differential across liquid in the priming apparatus to thereby prime the pump.

Aspirateur possédant un électromoteur entraînant une hélice (74) servant à créer une aspiration et une pompe (104) aspirant le matériau liquide à travers un tube d'entrée depuis le fond d'un réservoir et expulsant ledit matériau depuis le réservoir (32). Cet aspirateur comprend également un ensemble (144) mécanique de coupure et de commande prioritaire qui coupe automatiquement le moteur si le niveau de liquide du réservoir devient trop élevé. Cependant, l'utilisateur peut commander en priorité mécaniquement cette coupure automatique, de manière à continuer le pompage du liquide hors du réservoir (32). Un dispositif d'amorçage est situé dans le réservoir en communication fluide avec la pompe et un clapet peut être mis en service sélectivement afin d'établir une différence de pression de liquide dans le dispositif d'amorçage, ce qui permet d'amorcer la pompe.

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