Protective storage case for tape cassettes

Claim 1

In a protective storage case for a spooled tape carried by a support including at least one hub, comprising a hollow generally parallelepipedic flat box enclosing a spooled tape, said box having two main parallel spaced-apart generally rectangular faces connected along two perpendicular edges thereof by two mutually perpendicular first walls and having open edge faces along at least a part of the other two perpendicular edges thereof, a flap member including two mutually perpendicular second walls corresponding to the open edge faces of the box, said second walls being connected together by a third wall disposed parallel to the main faces of the box, the side of said flap member opposite said third wall being open, and hinge means connecting the box and the flap member for movement between a first position in which said second walls close the open edge faces of the box and a second position in which a spooled tape can be placed on and removed from said flap member, the improvement comprising means elastically retaining the support of said spooled tape on the flap member, said elastic retaining means comprising at least one protuberance mounted elastically on the flap member and offset from the center of said hub in the direction of one of said second walls and in yieldable engagement with said hub to grip said support releasably between said protuberance and said one second wall.