Particle containment and fluid retention with barrier seal in ma

Details Particle containment and fluid retention with barrier seal in ma Particle containment and fluid retention with barrier seal in ma

1995-02-10

1997-02-04

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 3807, 360 9908, G11B 3314, G11B 1702

Patent

active

056005113

ABSTRACT:
A disc drive includes a disc drive motor for rotating a magnetic storage disc. The disc drive includes a sealed disc drive chassis which provides a substantially contaminant-free cavity. A fixed member is coupled to the disc drive chassis and a rotor is rotatably about the fixed member for carrying a magnetic storage disc in the contaminant-free cavity. A bearing assembly between the rotor and fixed member allows rotation of the rotor relative to the fixed member. A gap defined between the rotor and the fixed member separates the bearing assembly from the contaminant-free environment and the magnetic storage disc. A barrier material in the gap has a characteristic which reduces contaminant flow thereby. The barrier material tends to prevent liquid and particulate contaminants from escaping from the drive motor and entering the sealed cavity.

REFERENCES:
patent: 4779165 (1988-10-01), Elsaesser et al.
patent: 5011165 (1991-04-01), Cap
patent: 5267737 (1993-12-01), Cossette et al.
patent: 5284391 (1994-02-01), Diel
patent: 5367416 (1994-11-01), Cossette et al.
Data Sheet, "Solving Design Problems with Synthetic Lubricants," published by Nye Lubricants, Inc., P.O. Box 8928, New Bedford, MA 02742 (undated), pp. 1-3.

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