Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Roll type
Patent
1978-09-12
1980-12-09
Caun, Peter M.
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Roll type
160 25, 160133, 160241, E06B 908
Patent
active
042379563
ABSTRACT:
Solar heat is utilized for heating a door structure whereby to minimize the escape of heat from within the building or other structure upon which such door is used. The door comprises at least two flexible sheets, one thereof constituting the principal door structure and the other constituting the heat generating means. The second sheet is spaced outwardly of the first sheet and parallel therewith. Both of the sheets are supported in any convenient manner such as on rollers either or both of which are preferably spring loaded for counterbalancing purposes. The inner sheet is normally opaque to normal light and heat radiation, such as by being made of steel, and constitutes the principal door. The other sheet is in one embodiment transparent to shortwave electromagnetic radiation but opaque to longwave electromagnetic radiation and may preferably constitute a piece of transparent flexible plastics material. Sun or other light rays will pass through the outer sheet, warm the inner door and trap the thereby generated heat within the space between the two sheets, i.e. provide a greenhouse effect. In another embodiment, the outer sheet is heat absorbtive (as black) and is warmed by the sun's rays and warms the inner door. Such warming of said principal door destroys, or at least diminishes, the heat gradient through said door and thereby prevents or diminishes the escape of heat from within the building.
REFERENCES:
patent: 1726854 (1929-09-01), Mumford
patent: 2871923 (1959-02-01), Kroger
patent: 3236290 (1966-02-01), Lueder
Luby John J.
Sivin Bernard J.
Caun Peter M.
Overhead Door Corporation
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