Intelligent lubricant for ramp load/unload

Details Intelligent lubricant for ramp load/unload Intelligent lubricant for ramp load/unload

1998-05-14

2000-09-19

Loomis, Paul

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360105, G11B 2102

Patent

active

061221309

ABSTRACT:
A disk drive system includes a base, a disk rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly moves the transducer to selected areas of the disk where information representative of data is to be written or read. The actuator assembly maintains the transducer in a transducing relationship with the disk. The actuator assembly also parks the transducer or unloads the transducer to a park position. A portion of the actuator assembly rides over a ramp to a park position. The ramp includes a mechanism for varying the coefficient of friction on the surface of the ramp. The ramp has a lower coefficient of friction when the actuator is unloading the transducer from the disk. When the actuator is placed in a park position, the coefficient of friction on the surface of the ramp is increased to help retain the actuator in its parked position. This helps maintain the actuator assembly in a parked position in the event of shock loading from dropping a computer or a disk drive. This in turn helps prevent head crashes or failure of the disk drive and possible data loss.

REFERENCES:
patent: 4864437 (1989-09-01), Couse et al.
patent: 4933785 (1990-06-01), Morehouse et al.
patent: 5034837 (1991-07-01), Schmitz
patent: 5235482 (1993-08-01), Schmitz
patent: 5455723 (1995-10-01), Boutaghou et al.
patent: 5926346 (1999-07-01), Briggs

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