Stoves and furnaces – Liquid heater – Open-top vessel that may include lid
Patent
1989-01-05
1990-08-07
Jones, Larry
Stoves and furnaces
Liquid heater
Open-top vessel that may include lid
220 68, 220444, 220445, 220447, A47J 2700, F24H 700, B23H 100
Patent
active
049458922
ABSTRACT:
A water heater includes a lower skirt ring (10, 50) supporting and spacing an inner storage tank (2) above a support surface (10a), and an outer jacket (42, 54) spaced outwardly therefrom to define an annular cavity space (22) therebetween. The outer jacket is slid along the inner storage tank during assembly. A seal (46) on the inner surface of the outer jacket, preferably in the form of a rolled-in dimple, engages the inner storage tank and/or the lower skirt ring, either at a seal (44) or a flange (52), and forms a dam (48) during sliding of the outer jacket along the inner storage tank. The dam prevents leakage of liquid therepast during foaming insulation. The rolled-in dimple (56) may extend all the way through the annular space to engage the tank wall or skirt ring.
REFERENCES:
patent: 2468488 (1949-04-01), Coyle et al.
patent: 3199712 (1965-08-01), Nurkiewicz
patent: 3253731 (1966-05-01), Fink et al.
patent: 4372028 (1983-02-01), Clark et al.
patent: 4447377 (1984-05-01), Denton
patent: 4477399 (1984-10-01), Tilton
patent: 4527543 (1985-07-01), Denton
patent: 4628184 (1986-12-01), West
patent: 4632792 (1986-12-01), Clark
patent: 4736509 (1988-04-01), Nelson
patent: 4744488 (1988-05-01), Nelson
patent: 4749532 (1988-06-01), Pfeffer
patent: 4790290 (1988-12-01), Chevalier et al.
Chevalier James L.
Pfeffer John D.
Wright Leslie R.
A.O. Smith Corporation
Jones Larry
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