Vibration damper for a multiple disk drive unit

Details Vibration damper for a multiple disk drive unit Vibration damper for a multiple disk drive unit

1994-05-17

1995-06-06

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 1702

Patent

active

054227674

ABSTRACT:
A multiple disk drive system having two disk-head assemblies (HDA) internally mounted on a rigid frame and accessible via a common industry-standard interface connector is provided. Each HDA is enclosed in a separate housing which is mounted on the disk drive system frame. A vibration damper mounted on the disk drive system frame physically contacts each HDA housing providing a spring force which minimizes the effects of shock and vibration on the operation of the HDAs. The vibration damper is coated with a low-wear, electrically insulating material to provide electrical isolation between the vibration damper and the HDAs housings. The coating material is chosen to also provide a desired coefficient of friction between the vibration damper and the HDA housings. A single electronic controller board is shared by both HDAs and is mounted on the bottom side of the frame underlying the HDAs. The controller board may implement SCSI or IPI interfaces in either differential or single-ended versions. The assembly is fully enclosed with metal top and bottom covers to provide separate enclosures for the HDAs, controller board cooling and EMC and RFI protection.

REFERENCES:
patent: 4367502 (1983-01-01), Iftikar et al.
patent: 4908715 (1990-03-01), Krum et al.
patent: 4912580 (1990-03-01), Hanson
patent: 4979062 (1990-12-01), Stefansky et al.
patent: 5025336 (1991-06-01), Morehouse et al.
patent: 5041931 (1991-08-01), Uno et al.
patent: 5173819 (1992-12-01), Takahashi et al.
patent: 5214567 (1993-05-01), Feightner et al.
"Removable Tray Assembly", IBM Technical Disclosure Bulletin, vol. 33, No. 12, May 1991, pp. 178-183.

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