Centering device of an optical disc player

Details Centering device of an optical disc player Centering device of an optical disc player

1995-05-19

1997-03-11

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369282, 360 9912, G11B 17028

Patent

active

056109008

ABSTRACT:
An upper clamping device and a lower clamping device are provided for clamping a double-sided optical disc in cooperation with the upper clamping device. An annular holder is axially movably provided in the upper clamping device. A plurality of spheres are radially movably mounted on the holder. A hub having a slant at a periphery thereof is axially movably provided. When the hub is downwardly moved the slant urges the spheres to engage them with an inside wall of a center hole of the optical disc. Thus, the optical disc is centered.

REFERENCES:
patent: 4541086 (1985-09-01), Tanaka
patent: 4575837 (1986-03-01), Okita
patent: 4747002 (1988-05-01), Takikawa et al.
patent: 4958839 (1990-09-01), Guzik et al.
patent: 5208798 (1993-05-01), Funabashi et al.
patent: 5303098 (1994-04-01), Yamamori et al.

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