Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1978-06-09
1980-03-04
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record medium
In container
242199, G11B 2306, G11B 1532, G03B 104
Patent
active
041919840
ABSTRACT:
In a tape cassette with a housing including top and bottom walls having respective pairs of spaced apart openings aligned with each other, a pair of hubs disposed rotatably within the housing between the walls and being accessible through the respective aligned openings for selectively driving the hubs of the cassette, and a magnetic tape wound on a cylindrical circumferential surface of an outer peripheral portion of each of the hubs; each of the hubs includes an annular rib radially inward from the outer peripheral portion and projecting axially beyond opposite flanks of the outer peripheral portion of the hub so as to extend rotatably around annular flanges directed axially inward from the respective aligned openings of the housing walls, and a pair of lubricating sheets are disposed against the inner surfaces of the housing walls and each have a pair of ridges or beads projecting therefrom and a pair of holes located between the ridges and through which the annular flanges on the adjacent wall extend with the annular rib of each hub engaging flat surface portions located between the holes and ridges of the sheets while the ridges of the lubricating sheets are engageable with the flanks of the outer peripheral portions of the hubs for accurately guiding the wound tape in the axial direction of the hubs.
REFERENCES:
patent: 3675875 (1972-07-01), Schmidt
patent: 3712559 (1973-01-01), Schwartz
patent: 3826489 (1974-07-01), Watkins, Jr.
patent: 3891159 (1975-06-01), Nelson
patent: 3977626 (1976-08-01), Gaiser et al.
patent: 4101096 (1978-07-01), Oishi et al.
patent: 4127242 (1978-11-01), Hashimoto et al.
Sasaki Shin
Tsukidate Yoshitaka
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Wolff John H.
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