Adaptor for a disc cartridge case

Details Adaptor for a disc cartridge case Adaptor for a disc cartridge case

1989-02-27

1993-04-20

Shoop, Jr., William M.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

369290, 369270, G11B 2300

Patent

active

052048535

ABSTRACT:
An adaptor for setting a disc which is of a smaller diameter than a standard type disc, such as an 8-cm Compact Disc, in a disc playback device such as a standard type Compact Disc player is detachably mounted in a disc housing space of a disc cartridge case, which disc housing space receives a disc in such a manner that it can be replaced and played back therein. The adaptor includes a central opening for receiving a disc of a small diameter therein in such a manner that this disc is roughly positioned and held in the central portion of the disc housing space so as to enable this disc to be set on a turntable of the disc playback device when the adaptor is mounted in the disc housing space of the disc cartridge case. The adaptor also includes a self positioning device for positioning the adaptor with respect to the disc cartridge case so that the adaptor will be held in a position in which the adaptor is not in contact with the disc when the disc is set on the turntable. The adaptor facilitates attaching and detaching of the disc and resolves the problem of disengagement of the adaptor from the disc during playback of the disc.

REFERENCES:
patent: 2285139 (1942-06-01), Andres
patent: 2646284 (1953-07-01), Weingarden
patent: 3201133 (1965-08-01), Matsukata
patent: 4730300 (1988-03-01), Kamoshita et al.
patent: 4731779 (1988-03-01), Mathunaga
patent: 4768185 (1988-08-01), Camerik
patent: 4881218 (1989-11-01), Yamamori
patent: 4899330 (1990-02-01), Einhaus

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