Secure type folding door

Details Secure type folding door Secure type folding door

1989-01-09

1990-05-08

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

160199, E05D 1526

Patent

active

049229877

ABSTRACT:
An accordion type folding door assembly designed for mounting across the entrance to a space to be secured. The panels of the assembly are interconnected by supplemental hinges completely shielding the spaces from vandalism and forcible entry, while simultaneously rigidifying and stiffening the door structure.

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patent: 3901302 (1975-08-01), Dagenais
patent: 4276919 (1981-07-01), Walters
patent: 4380260 (1983-04-01), Labelle
patent: 4386645 (1983-06-01), Dever et al.
patent: 4497357 (1985-02-01), Labelle
patent: 4660613 (1987-04-01), Dagenais
patent: 4736785 (1988-04-01), Sevster

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