Magnetic tape cassette

Details Magnetic tape cassette Magnetic tape cassette

1984-09-12

1986-09-30

Price, William

Special receptacle or package

For roll or reel

220348, 242 712, 242199, B65D 85672

Patent

active

046142703

ABSTRACT:
A compact magnetic tape cassette in which dust is prevented from entering the cassette and contaminating the tape, and which is especially suited for digital recording. The magnetic tape cassette includes two slidable guard panels, slidable to close a central opening in the cassette into which, when the guard panels are open, the tape is engaged with the recording or playback head. The guard panels are spring biased inwardly to normally close the opening. The edges of the guard panels may have recesses and protrusions to ensure a tight closure. The guard panels may be urged closed by compression springs arranged outwardly of each of the panels, or by a tension spring connected between the two panels.

REFERENCES:
patent: 1904097 (1933-04-01), Steiner
patent: 2030134 (1936-02-01), Burgener
patent: 2313428 (1943-03-01), Glenn
patent: 2531737 (1950-11-01), Lyon, Jr.
patent: 2640668 (1953-06-01), Schmidt
patent: 3759465 (1973-09-01), Janssen et al.
patent: 4057167 (1977-11-01), Lee
patent: 4399912 (1983-08-01), Mollen et al.
patent: 4497008 (1985-01-01), Schoenmakers

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