The present invention provides a magnet positioned to attract and hold a portion of a head arm in a disk drive assembly. The magnet is mounted by a resilient mechanism to a support structure so that there is some overtravel when the head arm assembly contacts the magnet, to dampen the impact and prevent...http://www.google.fr/patents/US5003422?utm_source=gb-gplus-shareBrevet US5003422 - Magnetic head locking mechanism
