Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1995-03-24
1998-09-08
Cao, Allen T.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 555
Patent
active
058053859
ABSTRACT:
A magnetic disk device has a spindle shaft rotatably supported by bearings, a plurality of magnetic disks directly mounted on an outer peripheral side of the spindle shaft and being stacked in an axial direction of the spindle shaft, a plurality of spacer rings directly mounted on the outer peripheral side of the spindle shaft and respectively interposed between the plurality of magnetic disks, and a clamp ring mounted on the top of the spindle shaft for tightly fixing the plurality of magnetic disks and the plurality of spacer rings to the spindle shaft. The device also has a center shaft provided with inner race members which are in contact with inner peripheral surfaces of bearings, an arm holder including a cylinder member formed in a center portion thereof and arm members connected at one end portion to magnetic heads corresponding to respective magnetic disks and at another end portion to the outer peripheral side of the cylinder member. A cylindrical support member is directly in contact with outer peripheral surfaces of the bearings and fixed to the arm holder at both end portions thereof by an arm clamp ring with a prescribed small gap formed between an outer peripheral surface thereof and an inner peripheral surface of the cylinder member of the arm holder and rotatably supported on the center shaft. A voice coil motor reciprocates the magnetic heads along the radial direction of the magnetic disks by the arm holder.
REFERENCES:
patent: 4754353 (1988-06-01), Levy
patent: 5050026 (1991-09-01), Goss
patent: 5161077 (1992-11-01), Jabbari
patent: 5247410 (1993-09-01), Ebihara et al.
patent: 5251085 (1993-10-01), Morris et al.
patent: 5301078 (1994-04-01), Makino et al.
patent: 5446608 (1995-08-01), Sanada
patent: 5463515 (1995-10-01), Koriyama
patent: 5469315 (1995-11-01), Sanada
patent: 5473489 (1995-12-01), Sanada
patent: 5510940 (1996-04-01), Tacklind et al.
patent: 5539597 (1996-07-01), Blanks
patent: 5602701 (1997-02-01), Komura et al.
Cao Allen T.
NEC Corporation
LandOfFree
Magnetic disk 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 disk device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disk device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1288687