Composite ramp structure for data storage devices

Details Composite ramp structure for data storage devices Composite ramp structure for data storage devices

1998-05-14

2000-12-12

Klimowicz, William

Dynamic magnetic information storage or retrieval

Head mounting

For moving head into/out of transducing position

3602557, 360 9702, G11B 554, G11B 2122, G11B 3314

Patent

active

061606863

ABSTRACT:
A ramp structure that is designed to reduce the amount of thermal expansion induced misalignment (changes in ramp-disk spacing) between load/unload ramps and data storage disks of a data storage device. The ramp structure has a rigid support structure and ramp units attached to the rigid support structure. The ramp units are made of plastic that is particularly suited for use as load/unload ramps. The ramps are mechanically connected only by means of being attached to the rigid support structure. The data storage disks are attached to a spindle. The rigid support structure is made of a material that has a thermal expansion coefficient that is equal to the thermal expansion coefficient of the spindle and any other parts to which the disks are attached. As a temperature change causes the spindle to expand and the spacing between disks to change, the rigid support structure expands at the same rate, thereby maintaining alignment between the ramps and the disks. Preferably, each ramp unit has two ramps, but each ramp unit can have a single ramp.

REFERENCES:
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patent: 5034837 (1991-07-01), Schmitz
patent: 5231549 (1993-07-01), Morehouse et al.
patent: 5241438 (1993-08-01), Matsushima
patent: 5289325 (1994-02-01), Morehouse et al.
patent: 5408375 (1995-04-01), Asano
patent: 5875074 (1999-02-01), Ho et al.

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