Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1996-05-22
1998-03-24
Stodola, Daniel P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
2423383, 360132, G11B 23087
Patent
active
057303819
ABSTRACT:
In a magnetic tape cassette including a cassette case, a pair of reels rotatable in the cassette case to wind a magnetic tape, each of the reels including a flange and a plurality of teeth formed at a peripheral portion of the flange., and a lock member engaging the flange for preventing the reels from rotating, the lock member further includes a slide body slidable between the reels in a front-rear direction of the cassette case, a pushing member pushing the slide body in the front-rear direction of the cassette case, a pair of expansions formed on opposite sides of the slide body facing the reels, each of the expansions expanding in a direction normal to the front-rear direction of the cassette case, and a pair of claws projecting from the respective expansions and being engagable to the teeth. The magnetic tape cassette is less susceptible to engagement fatigue of the lock member claws than conventional magnetic tape constructions, thereby ensuring more reliable reel-locking and greater longevity of the cassette.
REFERENCES:
patent: 3350877 (1967-11-01), Sutliff et al.
patent: 3497157 (1970-02-01), Hanes et al.
patent: 4449677 (1984-05-01), Ohta et al.
patent: 4871064 (1989-10-01), Hehn et al.
patent: 5143317 (1992-09-01), Sugiyama
patent: 5276580 (1994-01-01), Tanaka et al.
patent: 5449124 (1995-09-01), Fujii
Ishii Yukiyoshi
Yamada Takuji
Fuji Photo Film Co. , Ltd.
Stodola Daniel P.
Strimbu Gregory J.
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