And Yet It Holds: A Pivot Hinge System That Keeps Doors at Every 90° Angle

Doors are part of our daily routine, opening and closing so naturally that we rarely consider how they work. That is why, when discussing innovations in their design, many might think, "If it ain't broke, don't fix it." However, just because something functions well doesn't mean it can't be improved. Doors are no exception—their components can be optimized for better performance without changing their fundamental nature. Instead of sticking to the familiar, why not open the door for enhanc