Obstruction-responsive brake actuator for fire door or the like
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United States of America Patent
Stats
-
Apr 28, 1998
Grant Date -
N/A
app pub date -
Jun 11, 1996
filing date -
Dec 29, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
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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