Air tight shelters
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United States of America Patent
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-
Sep 19, 1989
Issued Date -
N/A
app pub date -
Oct 4, 1985
filing date -
Aug 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an airtight shelter or container having an impermeable flexible base sheet sealed to an impermeable flexible cover sheet by an inflatable tubular seal within a slotted tubular frame, the slotted tubular frame is formed of lengths of slotted tube secured together by a flexible part annular locking element having a lug or projection resiliently engaging in aligned transverse apertures through mated slotted tubes.
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