Disk drive with isolated voice coil motor magnet

Details Disk drive with isolated voice coil motor magnet Disk drive with isolated voice coil motor magnet

1985-11-14

1987-10-13

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360106, G11B 2108, G11B 1702

Patent

active

047002468

ABSTRACT:
An actuator for positioning transducers with respect to a disk storage device data surface provides a substantially sealed head-disk enclosure from which the voice coil motor permanent magnets are excluded. The mounting flange-inner core member, end cap and collar and shorted turn provide a sealed enclosure about the transducer carriage, voice coil and working air gap of the voice coil motor (VCM) with the permanent magnet and outer core pieces assembled to the device thereafter. The permanent magnets can be excluded from the clean room assembly area and this source of the most destructive particulate contamination are outside the head-disk enclosure.

REFERENCES:
patent: 4034411 (1977-07-01), Kraemer et al.
patent: 4439699 (1984-03-01), Brende et al.

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