G - Physics
11
B
242/61.2
G11B 23/08 (2006.01) G11B 23/037 (2006.01) G11B 23/087 (2006.01)
Patent
CA 1086701
TAPE CASSETTE ABSTRACT OF THE DISCLOSURE 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 of the housing walls for selectively driving the hubs of the cassette when the letter is in use, 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 disposed radially inward in respect to the outer peripheral portion and projecting axially beyond opposite flanks of the outer peripheral portion of the hub into close proximity to the housing walls and extending 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 in the direction away from the adjacent wall and a pair or holes located between the ridges and through which the annular flanges on the adjacent wall extend with the spacing between the ridges being selected so that the annular rib of each hub -1- is engageable with flat surface portions located between the holes and ridges of the sheets and providing axial bearings for the hubs 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.
304911
Sasaki Shin
Tsukidate Yoshitaka
Gowling Lafleur Henderson Llp
Sony Corporation
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