Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1980-10-21
1983-02-08
Christian, Leonard D.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
G03B 104, G11B 1532
Patent
active
043725040
ABSTRACT:
This invention is for a tape cassette having window for insertion of a magnetic head and a pinch roller formed extending from a peripheral wall of the housing of the tape cassette to one of the holding plates which holds a pair of reel hubs in place. The device according to this invention has a shutter member, and a resilient metal wire housed in the housing. The shutter member has projections which are to be engaged with an engaging member provided on a tape cassette holder member of the magnetic tape transport apparatus. The metal wire urges the shutter member to close a portion of the window formed in the holding plate. When the cassette is loaded into the loading member, the projections engage with the engaging member and the shutter member releases the closing state of the holding plate forming portion of the window against an urging force of the wire. When the cassette is removed from the loading member, the shutter member closes the holding plate forming portion to prevent the tape from being damaged by an external force.
REFERENCES:
patent: 4021006 (1977-05-01), Morimoto et al.
patent: 4022402 (1977-05-01), Morimoto
patent: 4041537 (1977-08-01), Kishi
patent: 4045821 (1977-08-01), Fujikura
patent: 4173319 (1979-11-01), Umeda
Kato Toshikazu
Kimura Kenji
Ohshima Ken
Saitou Sinichi
Satoh Ken
Christian Leonard D.
Olympus Optical Co,. Ltd.
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