Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 25, 2011
Patent Application Number
11979017
Date Filed
October 30, 2007
Patent Primary Examiner
Patent abstract
The present invention discloses a dust tank is arranged in the lower side of the machine frame. A dust bag is sleeved by the dust tank. The top side of the dust tank is connected to a filter tank. The filter tank has an air inlet pipe at the bottom side thereof, a filter thereinside, and an air outlet at the top side thereof. The air outlet is connected to a closed chamber arranged at the other side of the machine frame via the air suction pipe. A suction blower is arranged inside the closed chamber. A motor drives the suction blower to operate and suck air to flow through the air suction pipe and go out from through-holes on the top of the closed chamber.
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