Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1991-01-07
1991-09-17
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 9801, G11B 555
Patent
active
050500260
ABSTRACT:
A rotary actuator for a magnetic disc drive includes a stationary arcuate permanent magnet and a thin, arcuate voice coil formed of a single winding of aluminum wire. Both the magnet and voice coil are curved about a pivot axis of a rotating shaft supporting a movable head arm assembly of the rotary actuator. The coil is integral with the head arm assembly, and pivots the head arm assembly responsive to electrical current introduced into the coil. Opposite ends of the pivot shaft are received into fixed race bearings supported by spaced apart upper and lower bearing plates, one of which is slightly elastically deformed to secure the shaft by their restoring force. Leaf springs provide a biasing force against the selected bearing plate and cooperate with parallel, spaced apart flexure members in the selected bearing plate to compensate for thermal expansion coefficient mismatch.
REFERENCES:
patent: 4775908 (1988-10-01), Yeas
patent: 4805055 (1989-02-01), Wright
patent: 4835643 (1989-05-01), Schulze
patent: 4879617 (1989-11-01), Sampietro et al.
patent: 4881139 (1989-11-01), Hazebrouck
patent: 4941062 (1990-07-01), Yoshioka
patent: 4949206 (1990-08-01), Phillips et al.
Evans Jefferson
Heinz A. J.
Magnetic Peripherals Inc.
LandOfFree
Vertical flat coil for head actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vertical flat coil for head actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vertical flat coil for head actuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1921516