G - Physics – 11 – B
Patent
G - Physics
11
B
306/322, 352/24.
G11B 5/00 (2006.01) G11B 15/10 (2006.01) G11B 15/18 (2006.01)
Patent
CA 1249882
21 ABSTRACT: The invention relates to a switching device for a magnetic-tape-cassette apparatus, whose chassis (1) carries a switch (121) which, inside its housing, com- prises a switching lever (122) which is pivotable about a pivotal axis (135), which co-operates with switching contacts (130, 131), and which can be set to three oper- ating positions. The switching lever (122) has a centre position relative to the switching contacts (130, 131), in which position said contacts (130, 131) remain open. The switch also has two closed positions in which the switching contacts (130, 131) are closed, of which one position is stable and the other position is unstable, which closed positions are each off-centred from said centre position towards opposite sides. The apparatus comprises a movable head-mounting plate (74) which car- ries two mutually spaced projections (117, 118). A first projection (117) is capable of pivoting the switch- ing lever (122) into the stable closed position and the second projection (118) is capable of pivoting the switch- ing lever (122) into its centre position, the switching lever (122) being clear of the projection (117, 118) in its stable closed position and in its centre position. An actuating rod (62) comprises a switching nose (129) which can pivot the switching lever (122) from the centre position to the unstable closed position and can retain said lever in the latter position.
472277
Fetherstonhaugh & Co.
N.v.philips'gloeilampenfabrieken
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