Closure openable and closable by a drive for an aperture, such a

Details Closure openable and closable by a drive for an aperture, such a Closure openable and closable by a drive for an aperture, such a

1989-03-29

1991-01-22

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

160311, E06B 338

Patent

active

049863312

ABSTRACT:
The invention relates to a drive for closures of apertures, more particularly sectional gates. The sectional gate is made up of slats 1a-1c directly hinged to one another and guided in vertical and horizontal rails 3, 5 on both longitudinal edges. In the deflecting zone between the vertical portion and the horizontal portion of the aperture closure, associated with each edge of the aperture closure is a sprocket wheel 6 engaging with a roller chain. The rollers 21-24 of the roller chain are disposed on pivot pins 17-20 borne by locking members 10-12. The locking members 10-12 are inserted in the ends of every second hollow slat 1a, 1b, 1c. The pivot pins 17-20 are so arranged as to be in alignment with the hinge points 13-15 of the slats 1a-1e hinged to one another.

REFERENCES:
patent: 2263995 (1941-11-01), Katulski
patent: 2850088 (1958-09-01), Purdy
patent: 2947354 (1960-08-01), Netoux
patent: 4379479 (1983-04-01), Whiting
patent: 4628646 (1986-12-01), Eyerle

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