Patent ID: 8413919

Claim:
A roller storage system for storing sheet-like items comprising: at least one film drum having at least one strip-type film that can be rotatably driven; a winding drum that can be rotatably driven, the film can be wound onto the winding drum to receive the sheet-types items from the film drum and can be wound from the winding drum onto the film drum to deliver the sheet-type items; a hysteresis coupling on at least one of the film drum or the winding drum to transmit torque thereto; and a torsion spring on at least one of the film drum or the winding drum; wherein the hysteresis coupling includes a first half and a second half, the first half includes a magnet coupled to the drive shaft with a stub axle, the second half includes a disc coupled to the magnet in the coupled position and spaced apart from the magnet in the decoupled position, the disc is coupled to a spool adaptor, the spool adaptor is coupled to the torsion spring, the torsion spring is coupled to one of the film drum or the winding drum.