Magnetic tape cassette

Details Magnetic tape cassette Magnetic tape cassette

1980-04-25

1981-09-15

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

G03B 104, G11B 1532

Patent

active

042892856

ABSTRACT:
An improved magnetic tape cassette and separation sheet therefor. The separation sheet, positioned between an inner wall and the tape reels of a cassette, is formed with at least one dome-like protrusion. A plurality of such protrusions are preferably utilized spaced throughout the sheet, each of a diameter R and height H sized to provide an R/H ratio of between about 100 and 10. The separation sheet may be formed with a protrusion shaped to fit into a window in an inner case wall, the window-fitting protrusion extending from a side of said separation sheet opposite from that containing said dome-like protrusions.

REFERENCES:
patent: 3005396 (1961-10-01), Keller
patent: 3142599 (1964-07-01), Chavannes
patent: 3655114 (1972-04-01), Turner
patent: 3826489 (1974-07-01), Watkins, Jr.

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