US Patent 7699278 Curtain rods and brackets

Apparatus for hanging curtains from wall brackets includes a hollow cylindrical rod with a longitudinal slot in its wall through which an interior clamping member for each wall bracket may be inserted. The clamping member is secured to a respective bracket by one or more screws which extend from outside of the rod to the clamping member captured within the rod. C-shaped rings mounted on the rod have openings to allow passage of the rings along the rod without coming into contact with the brackets. Each ring has a downward extending projection, e.g., a tab, which can be apertured to receive a hook, clip or other fastener attached to the curtains.