Replaceable cartridge for laminar roller screen, has torsion spring which biases rotating drum to rotate in sheet winding direction and actuating knob for adjusting tension of torsion spring

摘要

The replaceable cartridge has a rotating drum for a flexible sheet which slides along the guides and between the two vertical sections. A torsion spring biases rotating drum to rotate in sheet winding direction. An actuating knob (13) is connected to the spring so as to adjust the tension of the spring. A tubular case (6) which houses the drum and spring, has a longitudinal opening for insertion and removal of sheet. A case cover receives a removable coupling of the knob.