Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1991-07-12
1993-05-25
Dzierzynski, Paul M.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9701, 360 9801, G11B 3314
Patent
active
052145492
ABSTRACT:
An acoustically damped disc drive assembly having a housing, the disc drive assembly having internally disposed components capable of generating acoustic vibrations, the housing having a cover comprised of a plurality of plate members, each pair of the plate members having a damping layer disposed therebetween for damping acoustic vibrations imparted to the cover by the internally disposed components. In addition to the damping layer, which is preferably a viscoelastic material compositely bonding such plate members together, an acoustic isolator area may be provided to surround the attachment points of the internally disposed components to the cover in order to provide further damping of the acoustic vibrations.
REFERENCES:
patent: 2810842 (1957-10-01), Lewis
patent: 3527969 (1970-09-01), Papst
patent: 4144466 (1979-03-01), Hatch
patent: 4216505 (1980-08-01), Grant et al.
patent: 4408238 (1983-10-01), Hearn
patent: 4728831 (1988-03-01), Cheng
Control of Noise and Vibration With Damping Materials by Ahid D. Nashif, Anatrol Corporation, Cincinnati, Ohio Jul. 1983.
Product Information; Scotchdamp; SJ2015X Viscoelastic Polymer Types 110, 112, 113, 830 Material Damping Properties.
Baker Jonathan P.
Pottebaum Kenneth L.
Dzierzynski Paul M.
Heller III Edward P.
McCarthy Bill D.
Seagate Technology Inc.
Wong Don
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