Power operated bi-fold strip curtain door assembly

Details Power operated bi-fold strip curtain door assembly Power operated bi-fold strip curtain door assembly

E - Fixed Constructions

06

B

160/6

E06B 9/06 (2006.01)

Patent

CA 1200190

ABSTRACT OF THE DISCLOSURE The power operated bi-fold strip curtain door assembly is well-suited for doorways and openings to conserve energy and has applications, as an example, in the car wash industry and in industrial plants. A pair of strip curtain supporting inboard and outward sec- tions are hinged together at next adjacent side edges in side-by-side relation. The inboard section of each pair is suspended from an overhead track by a carriage guidingly engaged with the track. A fluid power actuator is provided for each pair of sections and, when energized, operates to fold and extend the door sections to respectively open and close the door assembly. One of the door sections of each pair has a side edge strip curtain upper horizontal hem portion reinforced such that its vertical border portion extends laterally in the plane of the strip door section a predetermined distance there- beyond. With the two sections of each pair extended, the border portion is moved into overlapping flush relation to the neighboring strip curtain section providing a seal therebetween. Sensors, as an example, are located on one of both sides of the doorway for signaling the door actuators. Upon sensing the presence of a vehicle, the hinged sections of the door assembly automatically fold open avoiding contact with the vehicle, as the vehicle passes through the doorway.

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