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They Invented What? (No. 202)

Posted in They Invented What? by Jake Ward on May 12, 2011

U.S. Pat. No. 4,625,468: Temporary/portable nuclear fallout shelter.

I claim:

1. A portable shelter for placement over a hole in the ground comprising in combination,

a tent enclosure having a floor with a tubular section extendable downwardly therefrom,

means for supporting the tent enclosure to form an enclosed volume above the hole, the tubular section of the tub floor extending downwardly into and lining the hole,

a shield membrane approximately dimensioned and having sufficient surface area to completely cover the tent enclosure when erected, with its circumferential edge extending into and partially buried in a shallow trench excavated around the tent enclosure and hole.