Fluid handling – With leakage or drip collecting
Patent
1987-07-01
1989-01-10
Walton, George L.
Fluid handling
With leakage or drip collecting
73304R, 73313, 137392, 137558, 200 6104, 307118, 340604, 340605, 340620, 361178, F16K 3102, H01H 2904
Patent
active
047966580
ABSTRACT:
Basement flooding due inter alia, to drain overflow or sump pump failure is a common problem. An apparatus for solving the problem includes a cover for closing a basement floor drain, a tubular casing extending through the cover into the drain, a pair of spaced apart conductors in the casing for completing an electrical circuit when water rises through the open bottom end of the casing to a predetermined level, and a control circuit connected to the conductors and to a solenoid valve in the building water supply pipe for closing the latter, so that no additional water enters the drain to exacerbate an already bad condition. A second pair of spaced apart conductors on the floor of the basement is coupled to the control circuit to give the same response in the presence of floor moisture. An audible alarm is sounded as part of the response to detected water.
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Dunsmuir George H.
Hinds William R.
Walton George L.
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