Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1975-12-09
1978-01-10
Bartis, A.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
119 73, 219318, 219331, 219337, 219517, 219533, 219534, H05B 102, H05B 380, A01K 700
Patent
active
040681165
ABSTRACT:
An immersion water heater particularly suitable for use in connection with animal watering buckets includes a housing fixed to an end of an electrical conduit and locatable on the bottom of a watering bucket. A U-shaped metallic sheathed heating element projects from the housing into a protective shield comprising plates secured to opposite sides of the heating element by spool-shaped insulator posts received between the legs of the heating element. A temperature sensing member is attached has one end attached to the heating element exteriorly of the housing and a second end extending into the housing. A thermostat and a thermofuse are located in the housing in heat exchange engagement with the second end of the temperature sensing member, whereby in the absence of water around the heating element and temperature sensing member, heat is rapidly transmitted from the heating element through the member to the thermostat and thermofuse to deenergize the heating element.
REFERENCES:
patent: 887923 (1908-05-01), Crandall
patent: 2412737 (1946-12-01), Kercher
patent: 2576688 (1951-11-01), Landgraf
patent: 2888547 (1959-05-01), Saper
patent: 2977454 (1961-03-01), Volker
patent: 3280307 (1966-10-01), Ramey et al.
Bartis A.
Nelson Manufacturing Company
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