Device for automatically closing a folding door

Details Device for automatically closing a folding door Device for automatically closing a folding door

1974-11-29

1976-04-13

Gilliam, Paul R.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Movably interconnected

160213, 16 75, E05D 1500

Patent

active

039498018

ABSTRACT:
In a door which is openable by being folded into two or more sections, a device which makes it possible to extend the folds automatically and noiselessly to close the door in such a manner that a series of extended folds look like one closed door when a finger tip pressure on the door for opening it has been released. In so doing, no additional automatic closing device such as a door check or a floor hinge is required.

REFERENCES:
patent: 1483809 (1924-02-01), Hull
patent: 2374925 (1945-05-01), Corso
patent: 3067453 (1962-12-01), Lyons
patent: 3092870 (1963-06-01), Baer
patent: 3438152 (1969-04-01), Cadiou
patent: 3456388 (1969-07-01), Hanson et al.
patent: 3592289 (1971-07-01), Aysta et al.
patent: 3800328 (1974-03-01), Harlan et al.

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