Static structures (e.g. – buildings) – With synthetic resinous component – Foam
Patent
1979-07-02
1980-08-12
Braun, Leslie
Static structures (e.g., buildings)
With synthetic resinous component
Foam
52301, 523095, 523097, 523098, 52727, 52806, 264 466, 264 467, E04C 100, E04H 1200, E04C 330
Patent
active
042166349
ABSTRACT:
A foam filled metal shell building column for dwellings and the like comprises one or more thin metal sheets formed as a hollow shell having a longitudinal load-bearing axis. The thin-walled hollow shell is filled with a core of a plastic foaming material including a suitable foaming agent which foams to fill the shell and to exert a force on the shell radially outwardly of the longitudinal axis thereby forming a solid composite column. The radially outward force deflects the shell and permanently places the shell in lateral tension to increase the load bearing capability of the column. When more than one sheet is used, the elongated edge portions of the sheets are configured to loosely interfit with one another when the shell is initially formed, and the plastic foaming material causes a positive locking of the interfitted edge portions. Thus thin, non-load bearing gauge aluminum is converted into a load bearing structural element.
REFERENCES:
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patent: 1971051 (1934-08-01), Reiner et al.
patent: 2099470 (1937-11-01), Coddington
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patent: 3233871 (1966-02-01), Schroer
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patent: 3915434 (1975-10-01), Lister
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patent: 4007919 (1977-02-01), Totten
Alcoa 7.3/Al Sweet's Catalog, 1975, vol. 3, 8 pages.
Reynolds "Colonial Columns" Nov. 1974.
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