Thermally insulated aluminum door or window frame

Details Thermally insulated aluminum door or window frame Thermally insulated aluminum door or window frame

1980-03-24

1982-08-17

Kannan, Philip C.

Movable or removable closures

With means mounting closure for swinging

Closure nests within portal frame

49504, 49DIG1, 52403, E05D 700, E06B 122

Patent

active

043442544

ABSTRACT:
A metal door or window frame comprises mobile and fixed frameworks each formed by a sub-frame including a substantially tubular section effective to be positioned on the side thereof facing the room interior and a cover section effective to be positioned on the side thereof facing outwards, between the sub-frames and the cover sections insulating material elements being provided for defining an uninterrupted heat insulating barrier therebetween.

REFERENCES:
patent: 2497957 (1950-02-01), Pelley
patent: 3861085 (1975-01-01), Jacob
patent: 4084361 (1978-04-01), Aspaas
patent: 4115972 (1978-09-01), Varlonga

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