Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1976-09-13
1978-05-23
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
119 73, 137301, 137341, 138 32, 138 33, 138116, 219299, 222146HE, F22H 112, A01K 706, F16L 5300
Patent
active
040912612
ABSTRACT:
An animal watering apparatus of a type having an inlet pipe connected to a source of water under pressure and an outlet valve which can be actuated by an animal to release water directly into the animal's mouth. A tubular casing is disposed around the water supply pipe. A conduit is disposed along side the water supply pipe within the casing and has a heating element therein for preventing the freezing of the watering apparatus. Still another conduit is disposed within the casing for allowing a power supply cord to be connected to the heating element. The casing being filled with an insulation material such a urethane foam. A baffle structure is provided in the water supply line for causing the water within the water supply line to continually circulate and thereby prevent a buildup of heat in the water which the animals are drinking and furthermore distributing the heat from the heating element along the entire water supply pipe so as to insure that it does not freeze.
REFERENCES:
patent: 186411 (1877-01-01), Church
patent: 1576218 (1926-03-01), Powell
patent: 1684197 (1928-09-01), Petsch
patent: 2062246 (1936-11-01), Atkinson
patent: 2351544 (1944-06-01), Revard
patent: 2479355 (1949-08-01), Hemker
patent: 2932313 (1960-04-01), Noland
patent: 3932727 (1976-01-01), True
patent: 3949707 (1976-04-01), Armstrong et al.
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