Wall-Mounted Towel Hanger with internal grasping spring

I got tired of my towels getting off the hanger while using them, so I designed this hanger. It grasps the towel with a spring system and doesn't let go unless you pull diagonally up in the direction of the opening.  

This hanger locks the towel to the wall. Once locked, it can't be removed by pulling down unless you tear the towel or break the mounting bracket. 

Insert the towel from the underside, lift it up and to the left, and fold it behind the handle to lock it in place. To remove it, just lift it up and to the right to unlock it. 

To mount it to the wall you need 2 M5 flat-head screws.