Patent ID: 9091093
Filing Date: 2015-07-28
Classification: B01D,B08B,E04H

Abstract:
1. A self-propelled robotic cleaning apparatus for cleaning a submerged surface of a swimming pool comprising: a housing comprising a cover and a base defining an interior chamber, the base having at least one water inlet configured to admit water into, and prevent backflow of water from the interior chamber; means for propelling the cleaning apparatus including rotationally-mounted supports coupled to the housing for moving the apparatus over the submerged surface of the swimming pool; a filter assembly positioned within the interior chamber and in fluid communication with the at least one water inlet for capturing debris in the water flowing into the interior chamber through the at least one water inlet from the pool; a debris discharge opening formed in the housing for discharging debris from the filter assembly and housing, the discharge opening having a releasable closure; and a filter backwash assembly positioned within, and configured to dislodge the captured debris from the interior chamber, the filter backwash assembly having at least one fluid discharge outlet for directing a pressurized flow of a fluid towards at least the filter assembly to dislodge the captured debris for discharge through the debris discharge opening.