G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 23/04 (2006.01) G11B 23/03 (2006.01) G11B 23/033 (2006.01)
Patent
CA 2060638
ABSTRACT A flexible magnetic disc cassette includes a cassette case formed of a molded plastics material defining an interior space and a window which opens thereinto. A flexible magnetic disc having a central hub is rotatably accommodated with the interior space of the cassette case such that the magnetic disc is exposed beneath said cassette case window. A shutter formed of a plastics material (which may be the same or different than the plastics material form which said cassette case is formed) straddles an edge of the cassette case adjacent to its defined window. The shutter is reciprocally movable along the edge between a closed position (wherein said shutter covers the window) and an opened position wherein the shutter exposes the window to allow access to said magnetic disc therebeneath). According to the invention disclosed herein, an elongate spring element is integrally molded (unitary) with either the cassette case or the shutter and so as to occupy a position within a corner pocket of the cassette case. The integral spring exerts a bias force against the shutter in a direction which encourages the shutter to move into its closed position.
Fletcher Maribeth
Hughes Patrick M.
Hoechst Celanese Corporation
Smart & Biggar
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