Appeal No. 1998-0988 Page 2
Application No. 08/268,861
The invention is directed to the unlocking of an actuator
in a disk storage apparatus.
Representative independent claim 1 is reproduced as
follows:
1. A disk storage apparatus comprising:
a housing;
a disk storage medium rotatably mounted to said housing;
an actuator including a transducer head at one end for
communicating information with the storage medium;
a coil attached to the actuator for controlling the
movement of the actuator and the transducer by varying the
current to the coil;
a magnetic locking apparatus for locking the actuator,
said magnetic locking apparatus comprising a permanent magnet
and a member attracted by said permanent magnet, wherein one of
said permanent magnet and said attracted member is attached to
said actuator, and the other of said permanent magnet and said
attracted member is attached to said housing, said permanent
magnet and attracted member being mounted such that, when said
actuator is in a locked position, said attracted member is held
by said permanent magnet; and
an actuator unlocking apparatus including:
means for supplying a first predetermined drive current to
said coil generating a force against said magnetic force of
said magnetic locking apparatus to unlock said actuator from
said magnetic locking apparatus; and
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