Tornado underground shelter

Static structures (e.g. – buildings) – Specified terranean relationship – Subterranean enclosure with portal opening; e.g. – storm or...

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Details

521695, 109 15, E02D 2700

Patent

active

049551663

ABSTRACT:
A generally spherical tornado shelter for safely housing and protecting people and things underground in the form of a truncated globe that is formed from a curved sidewall and terminates in a floor at the lower end thereof. A seat member is attached to the sidewall and to the floor and thereby forms a structural member that regidifies the globe. A generally rectangular entrance is formed in spaced relation to the central axis and provides a doorway into the interior of the structure. A plurality of steps lead from the entrance down to the floor and enables people to conveniently walk through the entrance, down the steps, into and back up from the shelter.

REFERENCES:
patent: 795984 (1905-08-01), Julian
patent: 2968130 (1961-01-01), Bascom
patent: 3049835 (1962-08-01), Sundstrum
patent: 3159117 (1964-12-01), Rosenfeld
patent: 3212220 (1965-10-01), Boniecki et al.
patent: 3974599 (1976-08-01), Grosh
patent: 4539780 (1985-09-01), Rice
patent: 4642952 (1987-02-01), Prandin
patent: 4660334 (1987-04-01), McCarthy

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