G - Physics – 11 – B
Patent
G - Physics
11
B
352/24.3, 352/32
G11B 23/03 (2006.01) G11B 23/00 (2006.01)
Patent
CA 1320569
PHQ 86027C 22 30.4.1987 ABSTRACT: Information carrier. An information carrier (3) comprises at least one disc (5) having a dimensionally stable central part (8) which is formed with a centre hole (9) and carries at least one hub (10) by means of which the information carrier can be centred and clamped on a drive spindle (11) of a drive means, which hub comprises first centring means (13) which are adapted to cooperate with the inner wall (12) of the centre hole (9) to centre the hub relative to the centre (14) of the disc, and second centring means (23) which in their turn centre the hub relative to the drive spindle (11), In accordance with the invention the radially resilient first centring means (13) act against the inner wall (12) of the centre hole and the hub is provided with clamping means which extend through the centre hole to cooperate with the overlying side of the central part, which clamping means comprise radially resilient clamping portions 18 comprising hook-shaped ends (19) which engage behind a part which is situated nearer the overlying side of the information carrier (Fig. 4).
552872
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
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