Cassette locking system

Details Cassette locking system Cassette locking system

1986-10-22

1989-01-31

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

242199, G11B 1532, G11B 2304

Patent

active

048011070

ABSTRACT:
A conventional reel brake in a video cassette is modified so that it will not function to release the brake when the cassette is placed in a cassette player unless a disabling device in the cassette is first unlocked or reset by external means. Further, when the cassette is unlocked and allowed to be played, it is once more disabled when the cassette is removed from the player. Thus, the cassette must be once more reset or unlocked before it can be played again.

REFERENCES:
patent: 4106724 (1978-08-01), Higashida
patent: 4232840 (1980-11-01), Sugawara
patent: 4482104 (1984-11-01), Saito
patent: 4579295 (1986-04-01), Marada
patent: 4623105 (1986-11-01), Pertzsch
patent: 4702434 (1987-10-01), Brauer

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