US Patent 7861352 Powered cleaning appliance

A powered sweeper includes a housing, a brushroll chamber disposed in the housing, a brushroll mounted in a brushroll chamber, a dirt chamber disposed in the housing, a drive motor disposed in the housing, and a driven wheel operatively connected to the drive motor. The brushroll rotates in the brushroll chamber and the dirt chamber communicates with the brushroll chamber such that debris is propelled by the brushroll into the dirt chamber.