Recording disk apparatus and rotational supporting structure the

Details Recording disk apparatus and rotational supporting structure the Recording disk apparatus and rotational supporting structure the

1997-08-19

1999-10-26

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9908, 384107, 384112, 384133, G11B 1702, F16C 3206

Patent

active

059738782

ABSTRACT:
A recording disk apparatus comprises a clearance between a shaft and a thrust bearing portion tapered in a circumferential direction, a lubricant communication groove of a bearing covered by the shaft so that a lubricant on a radial bearing portion communicates with the lubricant on the thrust bearing portion through the lubricant communication groove, a lubricant circulating path which extends axially from the thrust bearing portion to the radial bearing portion to prevent the lubricant flowing out of the thrust bearing portion from returning directly to the thrust bearing portion without passing the radial bearing portion, and/or a clearance between a slide bearing and a magnetic fluid seal device substantially filled with a magnetic fluid lubricant.

REFERENCES:
patent: 4348065 (1982-09-01), Yoshioka et al.
patent: 4383771 (1983-05-01), Freytag et al.
patent: 4526484 (1985-07-01), Stahl et al.
patent: 4598914 (1986-07-01), Furumura et al.
patent: 4602873 (1986-07-01), Izumi et al.
patent: 4656545 (1987-04-01), Kakuta
patent: 4717977 (1988-01-01), Brown
patent: 4726693 (1988-02-01), Anderson et al.
patent: 4747705 (1988-05-01), Agrawal
patent: 4883367 (1989-11-01), Maruyama
patent: 4938611 (1990-07-01), Nii et al.
patent: 4998033 (1991-03-01), Hisabe et al.
patent: 5045738 (1991-09-01), Hishida et al.
patent: 5067528 (1991-11-01), Titcomb et al.
patent: 5173814 (1992-12-01), Elsasser et al.
patent: 5246294 (1993-09-01), Pan
patent: 5323076 (1994-06-01), Hajec
patent: 5357162 (1994-10-01), Aiyoshizawa et al.
patent: 5381285 (1995-01-01), Done
patent: 5399141 (1995-03-01), Takahashi
patent: 5430590 (1995-07-01), Ainslie et al.
patent: 5448120 (1995-09-01), Schaule et al.
patent: 5457588 (1995-10-01), Hattori et al.
patent: 5463511 (1995-10-01), Nakano et al.
patent: 5473484 (1995-12-01), Dunfield et al.
patent: 5504637 (1996-04-01), Asada et al.

Affiliated with

Also associated with

Rating

Recording disk apparatus and rotational supporting structure the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recording disk apparatus and rotational supporting structure the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording disk apparatus and rotational supporting structure the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-771196