Malfunction detector system for item conveyor

Details Malfunction detector system for item conveyor Malfunction detector system for item conveyor

1975-11-11

1976-10-19

Yusko, Donald J.

Communications: electrical

Systems

Call station

209 73, 235 92CA, 235 92SH, G08B 2100, B07C 500, H03K 2302

Patent

active

039874290

ABSTRACT:
A malfunction detector system includes sensors spaced along an article flow path. Recirculating shift registers shift a binary 1 signal through succeeding stages as article-detected signals are received from the associated sensors. Logic elements compare the contents of stage "n" of one shift register with the contents of stage "n+1" of the shift register connected to the next sensor on the article flow path. The concurrent existence of binary 1 signals in the compared stages indicates a jam or a sensor failure has occurred.

REFERENCES:
patent: 3778629 (1973-12-01), Terryn
patent: 3813525 (1974-05-01), Kitterman et al.
patent: 3837484 (1974-09-01), Ruckebler et al.
patent: 3944933 (1976-03-01), Gallet

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