Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1987-10-07
1989-05-30
Bartis, Anthony
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
119 73, 219316, 219322, 219328, 219331, 219510, 219517, 219523, H05B 102, H05B 380, A01K 700
Patent
active
048353663
ABSTRACT:
A floating electric water heater for heating livestock watering tanks which maintains the watering tank substantially ice free during low temperatures, thereby providing access to water by a plurality of animals. More particularly, the heater includes a housing supporting an electric heating element for immersion in water to be heated and to a device in the housing for monitoring and regulating operation of the heating element. The device in the housing comprises a temperature responsive switch, which is located in the housing out of contact with the water, and a thermal conductor having both a first end affixed in a thermally conductive manner to a portion of the heating element immersible in the water and a second end affixed in a thermally conductive manner to the temperature responsive switch. The improvement comprises a thermal conductor further containing an extension (cooling) portion extending from the point of connection of its second end to the temperature responsive switch into the water to be heated, such that the extension (cooling) portion is not in contact with the heating element or first end and transmits heat from the temperature responsive switch to the water. Practically, the improvement eliminates the needless cycling by the thermostat, thereby providing maximum heat output into the water when needed.
REFERENCES:
patent: 2430272 (1947-11-01), Brodie
patent: 2472178 (1949-06-01), Temple
patent: 2511721 (1950-06-01), Langenbahn
patent: 2561932 (1951-07-01), Landgraf
patent: 2576688 (1951-11-01), Landgraf
patent: 2977454 (1961-03-01), Volker
patent: 4041433 (1977-08-01), Watson
patent: 4068116 (1978-01-01), Mc Kinstry
patent: 4599973 (1986-07-01), Ward
Hartman Kenneth D.
Owen Donald B.
Allied Precision Industries Inc.
Bartis Anthony
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