Submerged surface pool cleaning device

Abstract

A swimming pool cleaning device for automatically cleaning a submerged surface includes a forwardly inclined housing forming a flow passage including a flow control valve. A flexible planar disc extends around an inlet to the flow passage for engaging the surface to be cleaned. The flexible planar member includes slits extending from the peripheral edge inward toward the central opening to form a pedal-like segmented flange for splaying of each segment in response to travel of the cleaner over an irregularly contoured surface and facilitate an effective frictional contact with the surface. A steering mechanism driven by fluid flow through the housing causes the housing to rotate about the planar disc.

1 . A swimming pool cleaner comprising: 
 a housing having a flow passage extending therethrough from an inlet to an outlet thereof;    a flow control valve operable with the flow passage for interrupting a fluid flow therethrough for vibrating the housing and providing a propulsive force thereto; and    a flexible flange operable with the housing for frictionally engaging a submerged surface to be cleaned, the flexible flange having an intake aperture therein for providing fluid flow therethrough to the inlet and a flexible flap extending into the aperture for adjusting a size of the aperture responsive to the fluid flow therethrough.