Static structures (e.g. – buildings) – Shaped or strengthened by fluid pressure – Fluid pressure is subatmospheric
Patent
1979-01-30
1981-02-24
Friedman, Carl D.
Static structures (e.g., buildings)
Shaped or strengthened by fluid pressure
Fluid pressure is subatmospheric
9 11A, E04B 134
Patent
active
042519594
ABSTRACT:
A structural design of a tent for camping, particularly an inflatable amphibious tent which consists of a tent case, a guard tent and an air mattress connected with the internal base of the tent case. The tent case and air mattress each have a few valve holes for rapid inflation so that the tent can be erected on the land or on the water, and it is not necessary to construct supports. Since the base is an air mattress, the tent when used on land can be free of the discomfort resulting from accumulated water on rainy days and of the trouble of digging a ditch. The interior of the surface layer inner and outer annular edges of the upper annular surface and the outer annular edge of the lower annular surface of the air mattress respectively, wrap a cord or bead chain which winds about and crosses the air column of tent case so as to make structure of the tent case as a whole very firm, and to keep same balanced and stable while floating on the water. Therefore, this tent for camping will never become distorted or deformed.
REFERENCES:
patent: 2854014 (1958-09-01), Hasselquist
patent: 2859457 (1958-11-01), Manhart
patent: 2875771 (1959-03-01), Brewin
patent: 2908919 (1959-10-01), Bickwell et al.
patent: 2959278 (1960-11-01), Mitchell et al.
patent: 3058127 (1962-10-01), Hassold
patent: 3092854 (1963-06-01), Manhart
patent: 3130406 (1964-04-01), Jones-Hinton et al.
patent: 3145719 (1964-08-01), Johnson
patent: 4000749 (1977-01-01), Busco
patent: 4068418 (1978-01-01), Masse
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