Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1997-12-25
1999-11-16
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210 97, 210143, 210169, 2102421, 210776, 15 17, 134167R, B01D 1712
Patent
active
059851562
ABSTRACT:
A pool cleaning method and apparatus for selectively positioning a unitary body either close to the water surface or close to the bottom wall surface. In an exemplary embodiment, the body rests at the bottom and the subsystem lifts the device to the water surface for operation in a water surface cleaning mode to collect floating debris. A propulsion subsystem is preferably incorporated to move the body along the wall surface and/or water surface.
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Henkin Melvyn L.
Laby Jordan M.
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