Method of making a foam insulated water heater

Details Method of making a foam insulated water heater Method of making a foam insulated water heater

1985-06-11

1991-03-19

Simmons, David A.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 452, 264469, B29C 6722

Patent

active

050008935

ABSTRACT:
A water heater including a water tank having a jacket surrounding the tank and providing an insulation space therebetween. A plurality of serial foam injections are introduced into the space to fill the space between the tank and the jacket.

REFERENCES:
patent: 3229441 (1966-01-01), Heffner
patent: 3366718 (1968-01-01), Komada
patent: 3392220 (1968-07-01), Jennings
patent: 4136141 (1979-01-01), Bauer et al.
patent: 4269890 (1981-05-01), Breitling et al.
patent: 4372028 (1983-02-01), Clark et al.
patent: 4447377 (1984-05-01), Denton

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