Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1992-06-04
1994-04-19
Vrablik, John J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
310 36, 310 39, 360106, G11B 554, H02K 3300
Patent
active
053051696
ABSTRACT:
A rotary actuator disk drive in which the rotary actuator is driven by a motor comprising a movable coil and a stationary permanent magnet structure producing a magnetic field which links the coil. The rotary actuator comprises a load beam arm stack and a voice coil arm of electrical insulating material such as a light weight plastic, all of which are axially stacked and swaged to a rotary actuator bearing hub which is rotatably mounted in the disk drive. The coil arm of electrical insulating material has a bobbin section on which the coil is directly wound. The coil arm is molded together with the coil arm mounting bushing, a latch pin of magnetic material and an actuator arm balance weight insert molded therein. The latch pin is linked by the permanent magnet field of the motor permanent magnet structure and functions with that structure to define mechanical limits of angular actuator movement and to magnetically latch the actuator in one angular limit when the disk drive is not in use. Latch release is achieved by subjecting the rotary actuator to several cycles of oscillation at substantially the resonant frequency.
REFERENCES:
patent: 4196456 (1980-04-01), Manzke et al.
patent: 4855853 (1989-08-01), Matsushita et al.
patent: 4879617 (1989-11-01), Sampietro
patent: 5034837 (1991-07-01), Schmitz
patent: 5122703 (1992-06-01), Takahashi et al.
patent: 5208712 (1993-05-01), Hatch et al.
Anderson James C.
McAllister Jeffrey S.
Hewlett--Packard Company
Oberheim E. F.
Vrablik John J.
LandOfFree
Rotary actuator disk drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary actuator disk drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary actuator disk drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-24672