Patent ID: 6085825
Filing Date: 2000-07-11
Classification: B60J,E05B,E05D,E05F,E05Y,E06B,Y10S

Abstract:
A power-driven shutter assembly comprising:a pair of elongated tracks;a shutter curtain supported in the tracks for bi-directional sliding movement between open and closed positions, the curtain being formed by a plurality of rails that are connected to one another for relative pivotal movement and including a plurality of end shoes supported on the rails;a pair of sprockets supported on the assembly for rotation and presenting teeth that are sized to engage the end shoes of the rails to drive sliding movement of the shutter curtain relative to the tracks;an operator connected to the curtain for biasing the curtain toward the open position to generally balance the force required to open the shutter curtain relative to the force required to close the shutter curtain;a motor connected to the sprockets for driving rotation of the sprockets; anda control circuit for supplying power to the motor to move the shutter curtain between the open and closed positions,wherein each rail of the curtain includes opposing open axial ends, and each end shoe includes a first end received in respective open axial ends of the rails and an opposing second end presenting at least one lobe shaped for receipt of the teeth of one of the sprockets.