Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1980-03-18
1982-07-27
Christian, Leonard D.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
242199, B65H 5938, G03B 102, G11B 1513
Patent
active
043413641
ABSTRACT:
A device for detecting irregular operative situations, particularly for tape decks, serves to detect the rotational state of one of the two discs only. In fact, the rotational state of only one of the two discs carrying the hub for the tape reels implies tape breaking and for this reason the cassette must be ejected or the transport motor must be deenergized. Two motion detectors 11A and 12A, 11B and 12B for the two discs 13A and 13B have as output a logic level 1 if the corresponding disc is stopped while before it rotated or a logic level 0 if the corresponding disc is stopped while before it was stopped; an exclusive OR gate 15 has an inputs the corresponding outputs of two motion detectors, respectively, and the output of exclusive OR gate 15, being 1 when only one of two discs rotates while the other one is stopped, detects an irregular operative situation.
REFERENCES:
patent: 3730453 (1973-05-01), Hotchkiss et al.
patent: 3879756 (1975-04-01), De Bell et al.
patent: 4114830 (1978-09-01), Hoshi et al.
Autovox S.p.A.
Christian Leonard D.
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