Tape cartridge with erasure-preventing indicator plug

Details Tape cartridge with erasure-preventing indicator plug Tape cartridge with erasure-preventing indicator plug

1987-01-30

1988-03-29

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 60, 242199, G11B 2302, G11B 1504, G11B 1904

Patent

active

047348127

ABSTRACT:
In a magnetic tape cartridge having a detection opening which can be opened or closed with a plug to prevent erroneous erasure of recorded signals on the tape, an indication opening through which the plug can be seen from the outside and a slot through which the plug is positioned as desired are both formed in a first wall of the cartridge housing, and the detection opening is formed in a second wall located differently from the first, in such a manner that the indication opening or slot is selectively closed by sliding of the plug from one position to the other or vice versa. The plug includes an elastic lock member in sliding contact with the inner surface of the first wall. The first wall has two grooves such that, when the plug is in either position, the lock member fits in the corresponding one of the two grooves. The plug is L-shaped along the inner surfaces of the first and second walls, and the lock member is disposed in a recess formed within the plug.

REFERENCES:
patent: 3826489 (1974-07-01), Watkins, Jr.
patent: 4012011 (1977-03-01), Saito
patent: 4041537 (1977-08-01), Kishi
patent: 4044386 (1977-08-01), Satou et al.
patent: 4053935 (1977-10-01), Shiba
patent: 4320421 (1982-03-01), Larson et al.
patent: 4399481 (1983-08-01), Loranger et al.
patent: 4496999 (1985-01-01), Espin
patent: 4507692 (1985-03-01), Sasaki
patent: 4530017 (1985-07-01), Oishi et al.
patent: 4536812 (1985-08-01), Oishi et al.

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