Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1983-06-28
1987-02-17
Hecker, Stuart N.
Dynamic magnetic information storage or retrieval
Record medium
In container
206444, G11B 2303, G11B 5012
Patent
active
046444351
ABSTRACT:
An improved disc cassette having a shutter-closeable aperture, wherein the shutter is moved against the force of a confined coil compression spring into an aperture-open condition and is there latched by a transversely deflectable latch pawl normally biased into latching position and operable by manual pinching of the cassette to release the pawl to permit the spring to return the shutter to the aperture-closed position.
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patent: 4164782 (1978-08-01), Stewart
patent: 4192422 (1980-03-01), Kotyuk
patent: 4360845 (1982-11-01), Tajima et al.
patent: 4445157 (1984-04-01), Takahashi
patent: 4470083 (1984-09-01), Doering et al.
patent: 4546397 (1985-10-01), Asami et al.
patent: 4581670 (1986-04-01), Nemoto et al.
Nemoto Tsuneo
Sawa Tetsuo
Hecker Stuart N.
Sony Corporation
Urcia Benjamin E.
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