Disk holding apparatus

Details Disk holding apparatus Disk holding apparatus

1992-10-21

1994-01-04

Eley, Timothy V.

Chucks or sockets

Expanding

Collet type

279 212, 279 434, 279 50, G11B 2504

Patent

active

052754243

ABSTRACT:
An apparatus for holding a disk with a central hole has a front rod which is received in a chuck so as to be able to move along its axis. The chuck is slidably received between the inner surface of a cylinder and the outer surface of the front rod. The front rod has on its front end an inverted truncated cone of which the maximum outer diameter is smaller than the diameter of the opening in the disk. When a part of the chuck is protruding from the cylinder, the disk can move past a bulge formed on the chuck and positioned on an expander. When the front rod is retracted into the cylinder, the inverted truncated cone moves inside the front end of the chuck so as to spread the chuck until it touches the inner surface of the opening of the disk, and the chuck is retracted along with the front rod so that the disk is firmly grasped and held between the front end of the cylinder and the bulge.

REFERENCES:
patent: 2435480 (1948-02-01), Tuttle
patent: 3514116 (1970-05-01), Brinkman
patent: 4705279 (1987-11-01), Mizukami et al.
patent: 4755981 (1988-07-01), Ekhoff
patent: 4856693 (1989-08-01), Kageyama et al.

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