Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1995-01-12
1996-09-10
Evans, Jefferson
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9807, 360 9908, 74573R, G11B 1702, F16F 1522
Patent
active
055551440
ABSTRACT:
A disc assembly for a disc drive has a balancing clip mounted on a shoulder formed on other portions of the assembly to balance the disc assembly. The disc assembly includes a cylindrical hub on which data storage discs, interspersed with ring shaped spacers, are mounted and the discs and rings are clamped into place on the hub between a flange formed on one end of the hub and a clamp ring that is secured about the other end of the hub by heat shrinking the clamp ring onto the hub. A circular shoulder is formed coaxially with the hub on a face that is, in turn, formed perpendicularly to the hub axis on either the clamp ring or the end of the hub adjacent the clamp ring. The balancing clip is a C-shaped lamella having a circularly arcuate inner periphery for mating with the shoulder. The outer periphery of the balancing clip is elliptically arcuate and is bilaterally symmetric with respect to the major axis of the ellipse to which the outer edge conforms. The shoulder is undercut to conform to a conical surface opening away from the face on which the shoulder is formed and portions of the inner periphery of the balancing clip are chamfered to conform to conical surfaces opening toward the sides of balancing clip at the cone angle of the shoulder.
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Skarky Loren D.
Stricklin John D.
Wood Roy L.
Evans Jefferson
Heller III Edward P.
McCarthy Bill D.
Seagate Technology Inc.
Watson Louis W.
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