Liquid purification or separation – Flow – fluid pressure or material level – responsive – Float
Patent
1987-04-06
1989-10-24
Fisher, Richard V.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Float
210136, 210169, 137433, 137114, 4507, 4512, E04H 320
Patent
active
048760013
ABSTRACT:
Apparatus for use with a swimming pool cleaner which includes a housing which defines a chamber, at least one inlet to the chamber and an outlet from the chamber, and a bouyant ball inside the chamber. The apparatus is installed or incorporated in a weir. When suction is cyclically applied to the outlet, and removed, the ball alternately blocks the outlet, and leaves the outlet unblocked. Correspondingly the pool cleaner is operated to clean a submerged surface of a swimming pool, or water is drawn directly from the pool and through a weir, for filtration. A more efficient cleaning of the pool takes place.
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patent: 3478882 (1969-11-01), Hornemann
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patent: 3555574 (1969-08-01), Stanwood
patent: 3567020 (1971-03-01), Whitaker
patent: 3616916 (1969-10-01), Greene
patent: 3620372 (1971-11-01), Ehret
patent: 3628664 (1971-12-01), Stanwood
patent: 4606365 (1986-08-01), Siposs
patent: 4725352 (1988-02-01), Haliotis
Fisher Richard V.
Lee Coreen Y.
Liberty Pool Products S.A.
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