Liquid purification or separation – Structural installation – Closed circulating system
Patent
1988-12-07
1991-07-02
Dawson, Robert A.
Liquid purification or separation
Structural installation
Closed circulating system
4290, 15 17, 134167R, 210169, 2104162, E04H 320
Patent
active
050283219
ABSTRACT:
A pool cleaning device for a pool having a powered water circulation and filtration system including at least one return inlet. The inlet is directed to create a circular flow pattern of water in the pool so as to cause debris therein to become concentratedly swirled at the pool bottom. The pool cleaning device of the present invention is provided adjacent to the drain on the pool bottom and provides a vortex of water extending upwardly from the pool bottom. The device includes a housing having at least one inlet and at least one outlet. A shroud is connected to the housing and has at least one inlet and at least one outlet. The debris moves from the shroud inlet to the shroud outlet due to the vortex. A debris collection device is connected to the shroud. Movement of the water and the debris is permitted into the debris collection device and the debris is limited from returning to the shroud. The device may be sealingly seated over the drain on the pool bottom whereby the device directs a portion of the pool water downward to the drain which provides power to produce the upward vortex. Thus, the device is powered by the normal suction force at the drain caused by the water circulation and filtration system.
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Scott Stephen A.
Stone Damon K.
Dawson Robert A.
Drodge Joseph
Stone Damon K.
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