Fluid handling – With heating or cooling of the system – With electric heating element
Patent
1980-03-10
1981-11-03
Michalsky, Gerald A.
Fluid handling
With heating or cooling of the system
With electric heating element
119 73, 137 59, 137436, 219332, 219333, 219496, A01K 704
Patent
active
042980224
ABSTRACT:
An energy saver control system for prevention of water freezing in an outdoor tank, such as a stock tank, which involves a conventional type of water level control valve to maintain a selected level of water in the tank, and an electrical switch which is controlled by the pressure which is in the water line leading to the water level control valve. Means are provided to control the rate of water flow into the tank to a selected low value, sufficient for prevention of freezing of the surface of the water in the tank. When water is flowing into the tank the electrical heater is cut off. The electrical switch is controlled by the pressure in the water line leading to the water level control means.
REFERENCES:
patent: 2297030 (1942-09-01), Snyder
patent: 2480053 (1949-08-01), Schubert
patent: 2511721 (1950-06-01), Langenbahn
patent: 2570694 (1951-10-01), Langenbahn
patent: 3636312 (1972-01-01), Dreher et al.
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