Static structures (e.g. – buildings) – Shaped or strengthened by fluid pressure – Fluid pressure is subatmospheric
Patent
1980-01-09
1981-11-03
Murtagh, John E.
Static structures (e.g., buildings)
Shaped or strengthened by fluid pressure
Fluid pressure is subatmospheric
47 17, E04B 1345, A01G 900
Patent
active
042978130
ABSTRACT:
A multiple layer insulation cover for preventing heat loss in, for example, a greenhouse, is disclosed. The cover is comprised of spaced layers of thin foil covered fabric separated from each other by air spaces. The spacing is accomplished by the inflation of spaced air bladders which are integrally formed in the cover and to which the layers of the cover are secured. The bladders are inflated after the cover has been deployed in its intended use to separate the layers of the foil material. The sizes of the material layers are selected to compensate for sagging across the width of the cover so that the desired spacing is uniformly maintained when the cover has been deployed. The bladders are deflated as the cover is stored thereby expediting the storage process and reducing the amount of storage space required.
REFERENCES:
patent: 1890418 (1932-12-01), Schmidt
patent: 2750313 (1956-06-01), Schwartz
patent: 2934465 (1960-04-01), Warp
patent: 3741631 (1973-06-01), Laing
patent: 4038788 (1977-08-01), Classens
patent: 4040210 (1977-07-01), Land
patent: 4064648 (1977-12-01), Cary
patent: 4098035 (1978-07-01), Bessler
patent: 4114325 (1978-09-01), Hochstein
patent: 4150516 (1979-04-01), Wemyss
Pneumatic Structures-A Handbook for Architect and Engineer, by Herzog, copyright 1976, pp. 27, 28.
Donohoe Anthony J.
Farrell James J.
Cornell Research Foundation Inc.
Murtagh John E.
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