Magnetic tape cassette having protrusions of low friction resin

Details Magnetic tape cassette having protrusions of low friction resin Magnetic tape cassette having protrusions of low friction resin

1992-08-04

1993-07-20

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

242199, G11B 2302, G11B 1532

Patent

active

052299066

ABSTRACT:
A magnetic tape cassette in which protrusions made of low friction resin are formed on the inner walls of the upper and lower halves by a two-color molding method in such a manner that they are located in correspondence at least to the magnetic tape winding diameter so as to be in contact with the edges of the magnetic tape. The protrusions of low friction resin replace the friction sheets in the conventional magnetic tape cassette, whereby the number of components and the number of manufacturing steps are reduced, with the result that the manufacturing cost is also reduced.

REFERENCES:
patent: 3495787 (1970-02-01), Wallace
patent: 3565367 (1971-02-01), Yamamoto
patent: 3675875 (1972-07-01), Schmidt
patent: 4126283 (1978-11-01), Kawachi
patent: 4306663 (1981-12-01), Gelardi et al.
patent: 4466584 (1984-08-01), Chevalier et al.
patent: 4532566 (1985-07-01), Horimoto
patent: 4607306 (1986-08-01), Shirako

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