Movable closure with load resistant lateral locks

Details Movable closure with load resistant lateral locks Movable closure with load resistant lateral locks

1997-03-04

1998-12-15

Johnson, Blair

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Roll type

160269, 1602731, E06B 908

Patent

active

058486313

ABSTRACT:
An Overhead rolling gate for a generally rectangular opening in a wall includes a generally horizontal frame portion at the top of the rectangular opening and two generally vertical portions at the lateral sides of the rectangular opening. A shaft is mounted substantially along the horizontal frame portion for rotation about a horizontal axis. A closure member is provided which has a length at least equal to the height of the rectangular opening and is capable of beg rolled up onto said shaft or spindle when in an open condition of the overhead gate and rolled down from the shaft or spindle to a closed position of the overhead gate to cover the rectangular opening. The closure member has a width selected to insure that the lateral ends of the closure member are guided by the vertical frame portions when the closure is rolled up unto or rolled down from the shaft or spindle. Locking means selectively locks and fixes the lateral ends of the closure member relative to the vertical portions when the closure member is closed up to anticipated wind loads of approximately 103 pounds per square foot. In this way the closure member acts as a beam fixed at both lateral ends thereby minimizing the maximum deflection relative to a plane defined by the wall or frame as a result of distributed anticipated wind loads acting on the closure member.

REFERENCES:
patent: 802185 (1905-10-01), Folden
patent: 1676327 (1928-07-01), Faulds
patent: 1713989 (1929-05-01), Warnick
patent: 1751950 (1930-03-01), Sacerdote
patent: 1756496 (1930-04-01), Warnick
patent: 2870831 (1959-01-01), Peselnick
patent: 3237682 (1966-03-01), Davis

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