Patent ID: 6469871
Filing Date: 2002-10-22
Classification: G11B

Abstract:
A disk drive comprising:a disk drive base; a head stack assembly coupled to the disk drive base, the head stack assembly comprising: a tang; an actuator arm; and a head coupled to the actuator arm; and a bistable latch for latching the actuator arm in a latched position, the bistable latch comprising: (a) a latch base supported by the disk drive base, the latch base comprising a first groove and a second groove, wherein a depth of at least part of the first groove is different than a depth of at least part of the second groove; (b) a latch arm movable with respect to the latch base, the latch arm comprising: a contact surface for contacting the tang; and a guide member interacting with the first and second grooves for guiding the latch arm through a predetermined trajectory; and (c) a spring comprising a first end and a second end, the first end connected to the latch base, and the second end connected to the latch arm, wherein:the guide member interacts with the first groove when latching the actuator arm; and the guide member interacts with the second groove when unlatching the actuator arm.