Patent ID: 6270279
Filing Date: 2001-08-07
Classification: B42F

Abstract:
An improved ring binder comprising:a frame including a pair of leafs extending lengthwise of the frame;at least one binder ring formed of two binder ring halves one end of each of which is attached to one of the leafs;a first booster attached to one end of the frame, the leafs each including a notch formed at the same end thereof and the booster including a tang captured with the notch for the booster to be able to move the leafs relative to each other to open and close the binder, and a second booster installed at the other end of the frame, the leafs including another notch formed at the other end of the frame and each end of the cover respectively extending beyond an installed booster and crimped about the booster to secure the booster in place; and,a cover fitting over the frame and extending beyond the location of the booster when it is attached to the frame, sides of the cover being crimped about the booster to secure the booster in place, and wherein the notches formed by the leafs each include an inner end and an outer end with a passage formed between the notch and an adjacent end of the leafs, the inner end of a respective notch and its associated passage being narrower than the booster tang.