Patent ID: 9661971
Date: 2017-05-30
CPC Classifications: A47L

Claim:
1. A self-propelled vacuum cleaner comprising: a main housing having a bottom wall formed with an aperture; floor-engaging wheels on the main housing rotatable for advancing the main housing in a normal horizontal travel direction; a module housing projecting through the aperture and forming a brush compartment defining a downward directed suction opening having relative to the direction a leading edge and a trailing edge, the module housing being limitedly vertically movable in the main housing relative to the main housing; a brush in the module housing engageable through the opening with a floor beneath the opening; a blower in the module housing having an intake; a duct connecting the intake to the brush compartment for aspirating air through the opening and past the brush into the module housing; structure forming an angled slide face at least 10 mm high at the leading edge; and a flexible lip extending downward from the module housing rearward in the direction from the trailing edge.