Fluid handling – Liquid level responsive or maintaining systems – Electrical characteristic sensing
Patent
1998-09-04
1999-11-30
Walczak, David J.
Fluid handling
Liquid level responsive or maintaining systems
Electrical characteristic sensing
137389, 137386, 4508, E03B 100
Patent
active
059924470
ABSTRACT:
A device for filling a swimming pool having a liner and a shell includes a water supply valve to control the flow of water into said swimming pool; a vacuum pump to evacuate air from the space between the liner and the shell as the swimming pool is being filled; a probe for generating a signal when the water in the pool reaches a predetermined height; and a controller responsive to the signal from the probe to shut off said water supply valve and the vacuum pump when water is detected by the probe. A current sensor monitors the current to the vacuum pump and shuts off the water supply valve when the vacuum pump ceases operation. A bypass switch allows the current sensor to be disabled.
REFERENCES:
patent: 3997925 (1976-12-01), Hough
patent: 4612949 (1986-09-01), Henson
patent: 4817217 (1989-04-01), Lively
patent: 5365617 (1994-11-01), Tarr
patent: 5493922 (1996-02-01), Ramey et al.
patent: 5878447 (1999-03-01), Mogab et al.
Miller Russell
Oyer Michael
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