Nova design team improved the difficult metal ring binder mechanism to an effortless and cleaver way. Instead of popping the metal bar,ring bar slides open / close smoothly parallel to book cover. This new invention not only is accessible to children and elderly, it is also safer. Integrate simple turn mechanism to this notebook allow easy handling. User would have full control to the width and the speed of the ring opening. Turn pin counter-clockwise, rings open gently; then reverse to a closure. It avoids immediate snap. Pages are now easy to remove and to rearrange.
Photo Credit: Nova Design Co., Ltd.