Method of manufacturing foam insulated tank

Details Method of manufacturing foam insulated tank Method of manufacturing foam insulated tank

1980-10-06

1983-02-08

Gilden, Leon

Metal working

Method of mechanical manufacture

Assembling or joining

264 469, B23K 3102

Patent

active

043720285

ABSTRACT:
A method of manufacturing a foam insulated water heater of the type having an inner tank, a layer of insulating foam material surrounding the inner tank and an outer protective shell includes, in one embodiment, the steps of (1) forming a flexible, expandable bag in a configuration which may be placed around the bottom edge of the inner tank, (2) attaching the flexible bag around the bottom edge of the tank, (3) filling the bag with a foam material which expands to form a collar, (4) positioning the outer shell about inner tank prior to expansion of the foam collar, and (5) subsequently filling the remainder of the space between the tank and the shell with an expandable foam material which is retained, at least in part, by the foam expanded, flexible bag.

REFERENCES:
patent: 3313020 (1967-04-01), Krauskopf

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