Spindle assembly

Details Spindle assembly Spindle assembly

1981-03-23

1983-03-15

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

360 98, 360 99, 346137, G01D 1528, G11B 1702, G11B 362

Patent

active

043769977

ABSTRACT:
A spindle assembly of a type adapted to receive a readily removable disc for rotation senses the thickness of the disc with respect to a predetermined thickness and in response to so sensing the thickness of the disc an indication is provided as to whether the thickness of the disc varies from the predetermined thickness. The disc is clamped by movement of a clamping body while a portion of the spindle assembly serves to insure that the clamping body moves into and out of engagement with the disc surface in a direction substantially normal to the disc under control of the spindle assembly. In addition, the force with which the clamping body acts is modulated selectively as desired to accommodate the need for greater forces when mounting larger discs.

REFERENCES:
patent: 3345074 (1967-10-01), Estkowski
patent: 3608909 (1971-09-01), Rabinow
patent: 3670315 (1972-06-01), Fowler
patent: 3867724 (1975-02-01), Bruer et al.

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