| 摘要 |
<p>A document binder (1) comprising two side covers (2), pivotally attached to opposing edges of a back cover (3), wherein on the internal face of each side cover (2) at least one rigid peg (4,5) is pivotally attached, and each peg (4,5) is located in a corresponding position for an inter engagement with a mate peg of the opposite side cover, such that the total length of each pair of inter engaged pegs is varying during use according to the opening angle of the side covers. <IMAGE></p> |
