Magnetic disc device

Details Magnetic disc device Magnetic disc device

1989-04-26

1991-09-24

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9807, 360 9904, 277 80, G11B 1728

Patent

active

050518534

ABSTRACT:
A magnetic disc device. A seal member consisting of ring magnet and ring-shaped pole pieces is built in a shaft or housing to which disc is fixed. The inner end of the seal member is fixed to the shaft side, and the outer end forms, between the housing, a gap in which electroconductive magnetic fluid is kept. The contact areas of the electroconductive magnetic fluid with the pole pieces and the housing are made remarkedly large, so that not only grounding of the static electricity generated on the disc but also sealing of dust becomes effectual.

REFERENCES:
patent: 4531846 (1985-07-01), Raj
patent: 4604222 (1986-08-01), Borduz et al.
patent: 4604229 (1986-08-01), Raj et al.
patent: 4673997 (1987-06-01), Gowda et al.
patent: 4692826 (1987-09-01), Raj et al.
patent: 4898480 (1990-02-01), Raj et al.
patent: 4905110 (1990-02-01), Krum et al.
patent: 4973064 (1990-11-01), Hosoya

Affiliated with

Also associated with

Rating

Magnetic disc device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic disc device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disc device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1701170