Static structures (e.g. – buildings) – Shaped or strengthened by fluid pressure – Intersecting tubular elements form framework
Patent
1996-08-02
1998-06-09
Hafer, Robert A.
Static structures (e.g., buildings)
Shaped or strengthened by fluid pressure
Intersecting tubular elements form framework
52 213, 52 222, 446 85, 446220, 446478, E04B 1343, E04B 1520, A63H 3308
Patent
active
057618526
ABSTRACT:
A shielding device including an inflatable frame structure, and a covering covered over the inflatable frame structure, the inflatable frame structure including a plurality of inflatable purlins, and a plurality of inflatable rafters connected in parallel by the inflatable purlins, the inflatable purlins and the inflatable rafters having a respective air valve, each inflatable rafter having a plurality of coupling portions adapted for coupling to the inflatable purlins, each coupling portion defining a coupling hole through which one inflatable purlin is inserted.
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patent: 4631873 (1986-12-01), Parish
patent: 4901481 (1990-02-01), Seeley, Jr.
patent: 4979532 (1990-12-01), Johansson et al.
patent: 5007212 (1991-04-01), Fritts et al.
patent: 5145440 (1992-09-01), Boris et al.
patent: 5247768 (1993-09-01), Russo
patent: 5570544 (1996-11-01), Hale et al.
Fossum Laura
Hafer Robert A.
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