Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-05-17
1994-10-18
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
340603, 200 6105, 73 40, G06B 2100
Patent
active
053572416
ABSTRACT:
A fail-safe system for the detection of water leaks, and for the prevention of damage therefrom. In a home or building which includes a hot-water tank and a water tank for a toilet, e.g., the damage-prevention system comprises valves for shutting off the supply of water to the tanks, and other valves for draining the tanks through discharge lines to the outside of the home or building. At the same time, power to the hot-water tank is shut off. A fail-safe water detector comprises a float with a metal cap, a first pair of electrical probes below the float, and a second pair of electrical probes above the metal cap and separated from the cap by an air gap. A circuit is closed in any of three ways: (1) when water contacts the first pair of probes, (2) when water raises the float and makes contact between the metal cap and the second pair of probes, and (3) when water contacts the second pair of probes.
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Simmons James W.
Vassiliou Demetrius
Welch, Jr. James G.
Hofsass Jeffery A.
Roberts, Jr. Reginald F.
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