Patent ID: 9021645
Filing Date: 2015-05-05
Classification: E04H,Y10S

Abstract:
1. A pool cleaning robot for cleaning a surface of a swimming pool, said robot comprising: a main housing; main wheels being configured for propelling the robot; an auxiliary brushwheel disposed between said main wheels and configured for being rotated by the robot about an axis of rotation; and at least one inlet being formed in a bottom panel of the housing between said main wheels and being configured for intake of water and debris; wherein said main wheels are configured for being rotated by the robot at a first angular velocity, a filter unit that comprises a frame; wherein the frame comprises an inlet configured for being located above the inlet of the robot and a one-way valve located at the inlet of the frame; wherein said one-way valve comprising a flaccid tube fastened at a proximal end thereof to said ridge and a pair of elongated members extending at least across a distal end thereof, each of said elongated members being configured to be buoyed by the movement of water along the fluid path due to operation of the robot, and to sink in the absence of such movement.