Closure for building opening

Details Closure for building opening Closure for building opening

1978-06-12

1980-04-15

Caun, Peter M.

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Plural strip, slat, or panel assemblies

E06B 348

Patent

active

041978978

ABSTRACT:
A curtain for forming a substantially airtight closure for a building opening such as a doorway having a roll-up door at such time as the door is in its lower, closed position. A pair of remotely operated zippers connect opposite sides of the curtain to the opposite sides of the doorway.

REFERENCES:
patent: 1756043 (1930-04-01), Weidhass
patent: 1925815 (1933-09-01), Nicolson
patent: 3092172 (1963-06-01), Anderson
patent: 3331425 (1967-07-01), Groves et al.
patent: 3568901 (1971-03-01), McNitt

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