Retaining rings for optical disc assemblies

Details Retaining rings for optical disc assemblies Retaining rings for optical disc assemblies

1982-09-30

1984-06-05

Stephan, Steven L.

Dynamic information storage or retrieval

Storage medium structure

Layered

346137, 360135, 369287, 369289, 369291, 369292, G01D 1532, G11B 582

Patent

active

044532466

ABSTRACT:
An optical disc assembly includes a record layer carrying, flexible disc-shaped support with an information storage region. An annular retaining ring comprising an inner and an outer member clamps an outer peripheral portion of the support as the ring members close together. The outer peripheral portion of the support is wrapped about a radially outward facing surface of the inner ring member and a second, larger radius peripheral support portion is pushed into an annular recess in the inner ring member. Means on the retaining ring cause the portion of the support which is pushed into the recess to form a scalloped configuration within the recess. This inhibits buckling of the support. Such buckling would set up stresses in the support which would tend to be transmitted radially along the support to the information storage region.

REFERENCES:
patent: 3336583 (1967-08-01), Comstock
patent: 3373413 (1968-03-01), Treseder
patent: 3480964 (1969-11-01), Ley
patent: 3805292 (1974-04-01), Hashiguchi
patent: 4365258 (1982-12-01), Geyer et al.

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