VIDEOKASSETTE MIT KOMBINIERTER FEDER FUER STAUBKLAPPE UND STAUBKLAPPEN-RIEGEL

A short leg and coil of a torsion spring fit on a dust door polar member and a long leg having a first end connected to the coil and a second free end extends therefrom. An offset is formed between the first and second ends of the long leg and is received by a cassette cover and the free end engages a perpendicular projection formed on a dust door latch. In a second embodiment, a lower portion of the latch can flex relative to an upper portion, and a leaf spring is integrally formed to extend from the upper portion. The dust door polar member has a cam which cooperates with the leaf spring. In the first embodiment, when the latch is actuated by a pin the dust door is unlatched and rotated to the open position. When the pin is released, the long leg biases the latch back into a latched position and, simultaneously, the rest of the spring closes the door. In the second embodiment, the pin flexes the lower portion of the latch relative to the upper portion, and the cam loads the leaf spring upon opening the door. Upon release of the pin, the lower portion of the latch flexes back and the door is closed.