Method for the manufacture of a vacuum insulating structure and

Details Method for the manufacture of a vacuum insulating structure and Method for the manufacture of a vacuum insulating structure and

1989-06-28

1990-07-03

Fox, John C.

Pumps

Electrical or getter type

417 51, F04B 3702

Patent

active

049386670

ABSTRACT:
A method is described for the manufacture of a vacuum insulating structure intended mainly, but not exclusively, for use in such domestic appliances as refrigerators or freezers as well as for vehicle walls including aeroplanes and in buildings. A hollow plastic or metal panel is purged to atmospheric air by means of a getterable gas. Vacuum is produced by removing the purge gas and the vacuum is subsequently maintained by contacting the residual gas with a getter material. A vacuum insulating structure thus manufactured is also described.

REFERENCES:
patent: 3114469 (1963-12-01), Francis et al.
patent: 3439870 (1969-04-01), Vedder
patent: 3662522 (1972-05-01), della Porta et al.
patent: 4272259 (1981-06-01), Patterson et al.

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