Movable or removable closures – Safety means responsive to obstruction to closure – Sensing shoe on leading edge
Patent
1993-04-29
1995-01-31
Milano, Michael J.
Movable or removable closures
Safety means responsive to obstruction to closure
Sensing shoe on leading edge
49 28, 200 6143, E05F 1502
Patent
active
053849825
ABSTRACT:
A sensing device for use with a door movable in a first direction by an actuator is employed to stop or reverse the direction of movement of the door upon a force being applied to the sensing device by an object in the path of movement of the door. The sensing device comprises a sensing edge for being secured to the door. The sensing edge includes a generally flexible elongated sheath and a pair of generally parallel spaced contact members disposed within the sheath. The contact members are electrically connected to the actuator. A termination circuit is electrically connected to the contact members for generally continuously generating an installer selected predetermined output which is applied through the contact members to the actuator to enable operation of the actuator for movement of the door in the first direction. Upon the application of a force to the sensing edge, the contact members contact each other to prevent the output from the termination circuit from being applied to the actuator thereby causing the actuator to stop or reverse the direction of movement of the door.
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Milano Michael J.
Miller Edge, Inc.
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