Turbine drive apparatus and method suited for suction...

Details Turbine drive apparatus and method suited for suction... Turbine drive apparatus and method suited for suction...

2007-01-16

2007-01-16

Spisich, Mark (Department: 1744)

Brushing, scrubbing, and general cleaning

Submerged cleaners with ambient flow guides

C015S387000, C210S167150, C415S202000

Reexamination Certificate

active

10312748

ABSTRACT:
A method and apparatus for enabling a pool cleaner (60) to travel through a water pool to collect dirt and other debris from the water and/or pool containment wall (88). The cleaner (60) defines a suction passageway having an inlet (74) open to pool water and an outlet (78) adapted to be coupled via a flexible hose (30) to the suction side of an electrically driven pump (26). A resulting suction flow, from the inlet (74) to the pump, functions to (1) carry dirt and other debris to a filter (41) and (2) to drive a turbine (80) for propelling the cleaner (60). In accordance with the invention, the suction passageway inlet (74) includes an orifice defining a physical flow area A1and configured to create an “effective” flow area A2smaller than A1, downstream from the orifice. The small effective flow area A2creates a water flow of sufficient velocity to efficiently drive the turbine (80) whereas the larger physical flow area A1permits debris to pass more readily.

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