Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Optical storage medium support
Reexamination Certificate
2004-11-16
2008-08-12
Chen, Tianjie (Department: 2627)
Dynamic optical information storage or retrieval
Dynamic mechanism optical subsystem
Optical storage medium support
Reexamination Certificate
active
07412713
ABSTRACT:
A chucking apparatus in which a plurality of pawl bodies are provided in a radial direction of a hub body of a turntable such that the pawl bodies can move, a center hole of a disk is pressed by the pawl bodies to hold the disk, wherein the chucking apparatus comprises a resilient member for biasing the pawl bodies outward of the hub body, each of the pawl bodies includes a pawl portion which comes into contact with the disk, and a pawl-side stopper for limiting outward movement caused by the resilient member, the hub body includes a pawl opening through which the pawl portion can project outward, and a hub-side stopper which abuts against the pawl-side stopper, a position of the pawl portion in a standby state where the disk is not held by the pawl portion is set lower than a position of the pawl portion in a recording/replaying state where the disk is held by the pawl portion.
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Chen Tianjie
Dickinson Wright PLLC.
Matsushita Electric - Industrial Co., Ltd.
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