Disc-chucking mechanism having contractable/expandable...

Details Disc-chucking mechanism having contractable/expandable... Disc-chucking mechanism having contractable/expandable...

2007-10-02

2007-10-02

Davis, David (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Optical storage medium support

Reexamination Certificate

active

11035368

ABSTRACT:
A chucking mechanism which reliably attaches and detaches a disc with high precision. The chucking mechanism includes a shaft for supporting the disc and having a tapered recess, a tapered cone adapted to fit in the tapered recess, and a piston for moving a rod, attached to the tapered cone, through a hole formed in the shaft. The mechanism also includes an O-ring having a variable diameter and being disposed between the tapered cone and the tapered recess. As the piston moves the tapered cone in a first direction, the tapered cone gradually expands the diameter of the O-ring to press and fix the disc. As the piston moves the tapered cone in a second direction, the diameter of the O-ring gradually contracts to move out of contact with the disc so as to release the disc.

REFERENCES:
patent: 4881745 (1989-11-01), Peters
patent: 5014143 (1991-05-01), Mori et al.
patent: 5208798 (1993-05-01), Funabashi et al.
patent: 09-007262 (1997-01-01), None

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