Power operator for sliding plug doors
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United States of America Patent
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-
Apr 13, 1999
Grant Date -
N/A
app pub date -
May 13, 1997
filing date -
May 13, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A powered operator for sliding plug doors mounted on a movable carriage mounted overhead of an opening in the side wall of a transit vehicle, said doors including a single electric prime mover driving dual helical drives, each operating a door hanger attached to a single door panel over and away from said opening and for moving said carriage out of said side wall pocket. Door hangers used provide controlled deflection of door panels when in a fully open position. Drive linkages lock door panels when in a plugged position. The operator also provides guidance for the lower edge of said door panels during plugging and unplugging operations. Control elements and a central controller provides sequential door panel movement into and out of a pocket in the transit car side wall.
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