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Door for limited space 1

Each door panel has revolute joints with a slider and a roller. The sliders and rollers move in violet runway.

Yellow conrod has revolute joints with the sliders and cyan piston.

Grey cylinder has revolute joint with the orange left slider. So driving force from the cylinder is applied to the conrod.

Because of the moving cylinder, its hydraulic hoses hoses must be movable. In case of power interruption:

- Move red grip of the conrod to open the door.

- The door can not be opened from outside.

- At completely closed or opened positions of the door, force applied to the panels can not move them.

This mechanism can be applied for up & down garage doors.

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