Foam insulating a water heater

Details Foam insulating a water heater Foam insulating a water heater

1992-07-16

1993-11-23

Jones, Larry

Stoves and furnaces

Liquid heater

264 465, 264 452, 126361, 126373, F24H 100, B29C 6500

Patent

active

052634698

ABSTRACT:
The method of the present invention is for foam insulating a water heater where the water heater has an outer shell and an inner tank with tank fittings, the outer shell having tank fitting openings and the inner tank and outer shell being separated by an insulation space. The method comprises locating foam flow barriers between the inner tank and the outer shell around the periphery of each of the tank fitting openings and then spraying foam forming material into the insulation space with the foam barriers preventing the foam from escaping outwardly through the tank fitting openings.

REFERENCES:
patent: 4477399 (1984-10-01), Tilton
patent: 4790290 (1988-12-01), Chevalier et al.
patent: 4911142 (1990-03-01), Nelson
patent: 4972967 (1990-11-01), Nelson

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