Self-cleaning high-capacity, removable hard cartridge disk

Details Self-cleaning high-capacity, removable hard cartridge disk Self-cleaning high-capacity, removable hard cartridge disk

1994-07-14

1997-03-25

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

369291, G11B 2302

Patent

active

056150709

ABSTRACT:
A cartridge disk for the magentic storage of computer data includes a rotatable hard disk platter with a hub of liquid crystal plastic injection-molded to tolerances of twenty-five micrometers. Such material used in molds avoids expensive machining. An electrically-conductive shell enclosure encases the hard disk platter between a cover piece and a base piece. A door assembly with upper and lower doors which pivot open on parallel axes is mounted to an open end of the shell enclosure. A single lever connected to the door assembly is positioned to engage a pin mounted in a mating disk drive automatically opens the doors when the disk is inserted into the drive. Outside the drive the doors close to seal out contamination particles that could foul the hard disk platter. An electrostatic filter in the shell enclosure is strategically placed to clean the air circulated within the cartridge disk during operation. One part of the filter is placed in an air inlet centrally-mounted in the cover piece of the shell enclosure near a rotation axis of the hard disk platter. A second part of the filter is positioned in an outlet port and sandwiched between the cover piece and the base piece of the shell enclosure.

REFERENCES:
patent: 4817079 (1989-03-01), Covington
patent: 4885652 (1989-12-01), Leonard et al.
patent: 5150354 (1992-09-01), Iwata et al.
patent: 5280403 (1994-01-01), Martin
patent: 5282106 (1994-01-01), Saito et al.
patent: 5362172 (1994-11-01), Hubbling
patent: 5366788 (1994-11-01), Manzke et al.

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