Compact sound record playing apparatus

Details Compact sound record playing apparatus Compact sound record playing apparatus

1992-04-22

1993-09-21

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369 31, 369 63, 369 67, 369266, 446302, G11B 1706, G11B 1722, A63H 333

Patent

active

052475115

ABSTRACT:
A casing of a sound record playing apparatus includes of an upper body (1B) and a lower body (1A), and a vibration plate (16) is formed by reducing a thickness of a part of the upper body. An inner surface of the vibration plate is in abutment with a pickup (13) to amplify the vibrations of the pickup. Thus, a conical speaker which has been used conventionary can be eliminated, and the thickness of the recording disk reproducing apparatus is reduced. Expansion member (6) includes cam surfaces (71b, 72b) which force the grooved recording disk (2) away from the pickup (13) when the expansion member (6) is rotated conversely.

REFERENCES:
patent: 4439851 (1984-03-01), Kiguchi
patent: 4482990 (1984-11-01), Koike
patent: 4541085 (1985-09-01), Koike
patent: 4670868 (1987-06-01), Koike
patent: 4694445 (1987-09-01), Koike
patent: 5103442 (1992-04-01), Koike et al.
patent: 5109371 (1992-04-01), Koike et al.
patent: 5138602 (1992-08-01), Koike et al.
patent: 5164927 (1992-11-01), Kaneko

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