Disk drive having a pivot assembly which defines a knife edge fa

Details Disk drive having a pivot assembly which defines a knife edge fa Disk drive having a pivot assembly which defines a knife edge fa

1998-09-24

2000-04-04

Klimowicz, William

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360104, G11B 555

Patent

active

060468890

ABSTRACT:
A disk drive includes a base, a spindle motor coupled to the base, a disk mounted on the spindle motor, a pivot assembly coupled to the base, and a head stack assembly. The head stack assembly includes an actuator body defining a bore for surrounding the pivot assembly, a supporting surface, and an actuator arm cantilevered from the actuator body and defining a longitudinal axis. The bore defines a pivot axis of the head stack assembly. The pivot assembly includes a stationary member coupled to the base, the stationary member having a length, and a rotatable member positioned on the supporting surface such that the rotatable member is between the stationary member and the supporting surface. The stationary member and the rotatable member define a projecting member and a recessed portion, the projecting member and the recessed portion interacting to allow the head stack assembly to pivot about the pivot axis. The projecting member defines a knife edge extending parallel to the length and facing in a direction substantially perpendicular to the longitudinal axis.

REFERENCES:
patent: 4170361 (1979-10-01), Zwicky et al.
patent: 4170362 (1979-10-01), Zwicky et al.
patent: 4577248 (1986-03-01), Cantwell
patent: 4578726 (1986-03-01), Boehm et al.
patent: 4995025 (1991-02-01), Schulze
patent: 5355268 (1994-10-01), Schulze

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