Flexible or portable closure – partition – or panel – Roll type – With rotating means
Patent
1996-06-11
1998-04-28
Johnson, Blair
Flexible or portable closure, partition, or panel
Roll type
With rotating means
160 8, 160291, 49 27, E06B 956
Patent
active
057433208
ABSTRACT:
A brake actuator for use in conjunction with a door barrier for preventing closure of the door barrier when the actuator comes in contact with an obstruction. The brake actuator includes a bumper mounted on a leading edge of the barrier and movable between an operative position and an inoperative position. A load carrying linkage is provided which is activated when the bumper is moved to the operative position. The linkage is connected to a brake which becomes engaged when the linkage is activated, thus preventing movement of the door barrier to a closed position when the bumper contacts the obstruction.
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Johnson Blair
McKeon Rolling Steel Door Company, Inc.
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