Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1998-01-29
1999-11-09
Korzuch, William R.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 554, G11B 2122
Patent
active
059825871
ABSTRACT:
A head disk assembly for a hard disk drive having a mechanical actuator latch subassembly. The head disk assembly includes an enclosure, a disk, a pivot bearing cartridge, and a head stack assembly. The enclosure includes a base that preferably includes integral side walls. The disk has a recording surface that has an annular landing zone. The head stack assembly includes a head supported to be moved radially relative to the recording surface and to be brought to rest at a position in the landing zone. Significantly, the head disk assembly also includes a unitary latch base member and a unitary pivot latch member. The unitary latch base member has a mounting portion for mounting the latch base member to the base, an arm extending parallel to the major interior-facing surface, an inner crash stop post including an engaging end, and a pivot post. The arm also includes a spring holding post. The unitary pivot latch member has a bore surrounding the pivot post to allow pivot motion of the pivot latch member. The unitary pivot latch member also includes a receiving surface, a latch surface and a spring holding mount. In one embodiment, the head disk assembly also includes a spring for biasing the unitary pivot latch member in a latched or an unlatched position. The head stack assembly also includes a tang which engages the engaging end and the latch surface to define an inner crash stop and latch.
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Alagheband Amir G.
Cleanthous Aris C.
Hafez Omar
Lee Brian Eric
Payne David M.
Korzuch William R.
Shara Milad G.
Western Digital Corporation
Young Leo J.
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