Hydrodynamic resistant latch for data transducer assembly and ro

Details Hydrodynamic resistant latch for data transducer assembly and ro Hydrodynamic resistant latch for data transducer assembly and ro

1998-06-26

2000-08-01

Klimowicz, William

Dynamic magnetic information storage or retrieval

Head mounting

For moving head into/out of transducing position

2542542, G11B 554, G11B 2122

Patent

active

060975776

ABSTRACT:
A disk drive in which a movable latch locks the data transducer assembly to prevent movement due to shock. The movable latch cooperates with an actuator by engaging an actuator extension arm. The movable latch also engages a stationary magnet with one of two latching magnets. The movable latch arm is mounted to a shaft which extends into a sealed casing which incorporates a plunger. The plunger is located in a chamber filled with viscous fluid which is not subject to migration or outgassing from the chamber. The viscous fluid provides resistance to sudden movements of the plunger. Latch release is achieved by application of low continuous force to the actuator arm by a voice coil motor.

REFERENCES:
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patent: 4185309 (1980-01-01), Feldstein et al.
patent: 4194226 (1980-03-01), Kaseta et al.
patent: 5305169 (1994-04-01), Anderson et al.
patent: 5355979 (1994-10-01), Stephan et al.
patent: 5452161 (1995-09-01), Williams
patent: 5694271 (1997-12-01), Stefansky
patent: 5717544 (1998-02-01), Michael

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