Patent ID: 6220775
Filing Date: 2001-04-24
Classification: B42F

Abstract:
A folder comprising:a spine;a first lateral face on one side of said spine, said first lateral face having a turn-in contiguous therewith at a distal end thereof;a second lateral face on an opposite side of said spine, said second lateral face having, a turn-in contiguous therewith at a distal end thereof, said turn-in of said second lateral face being directed toward said first lateral face so that said spine and said first lateral face and said second lateral face can stand stably upright in a vertical positiona hook element formed on said turn-in of said first lateral face;a slot formed on said turn-in of said second lateral face, said hook element being engagable with said slot so as to selectively join the respective turn-ins of said first and second lateral faces together, said hook element having a profile substantially identical to a profile of said turn-in of said first lateral face, said hook element being under tension when engaged in said slot.