| 摘要 |
A system for converting a sliding patio screen door into a self-closing door through the use of an easily attachable hollow cylindrical tube attached vertically to the outer frame of the sliding door. The tube contains a hole in the top cap that allows a fine monofilament to extend through it and attach to the inner frame of the sliding screen door. The monofilament is attached to a weight on its other end inside the tube. When the door is opened through the application of manual force, the weight is lifted inside the tube. Once the force is released, the weight is returned through gravity to its rest position, thereby pulling the door closed.
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