MOTION LIMITERS IN A DIRECT ACCESS STORAGE DEVICE FOR PREVENTING DISK DATA ZONE AND SPINDLE BEARING DAMAGE

A DIRECT ACCESS STORAGE DEVICE (DASD) (10) INCLUDES A PLURALITY OF MOTION LIMITERS (48, 72, 74) AND/OR CONTINUOS MOTION LIMITER (76) PROJECTING FROM AT LEAST ONE OF THE BASE (12) AND COVER (58), EACH MOTION LIMITER HAVING FACES (55, 57, 60, B62, 68, 70) DISPOSED IN CLOSE PROXIMITY TO AND CONFRONTING...

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Hauptverfasser: JEFFREY FRED BOIGENZAHN, LOWELL JAMES BERG, TODD PHILLIP FRACEK, ZINE-EDDINE BOUTAGHOU
Format: Patent
Sprache:eng
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Zusammenfassung:A DIRECT ACCESS STORAGE DEVICE (DASD) (10) INCLUDES A PLURALITY OF MOTION LIMITERS (48, 72, 74) AND/OR CONTINUOS MOTION LIMITER (76) PROJECTING FROM AT LEAST ONE OF THE BASE (12) AND COVER (58), EACH MOTION LIMITER HAVING FACES (55, 57, 60, B62, 68, 70) DISPOSED IN CLOSE PROXIMITY TO AND CONFRONTING OPPOSITE SURFACES (38, 39) OF A DATA STORAGE DISK (14) ADJACENT A PERIPHERAL PORTION (42) OF THE DISK THAT DOES NOT CONTAIN DATA. PREFERABLY, THE MOTION LIMITERS ARE DISPOSED AT SEVERAL POINT ABOUT THE PERIPHERY OF THE DISK, AND MAY BE INCORPORATED IN A LOAD/UNLOAD RAMP (44) AND/OR SIDE RAILS (64) OF THE DASD. THE FACES OF THE MOTION LIMITERS ARED DISPOSED RELATIVE TO THE DISK SO THAT WHEN THE DASD IS SUBJECTED TO AN ACCELERATION, THE DISK CONTACTS AT LEAST ONE OF THE FACES ONLY AT THE PERIPHERAL PORTION OF THE DISK, OUTSIDE THE DATA ZONE (40). ACCORDINGLY, THE MOTION LIMITERS PREVENT DATA ZONE AND SPINDLE BEARING DAMAGE WHEN THE DASD IS DROPPED.(FIG. 1)