Jam detector

Details Jam detector Jam detector

1977-05-23

1978-09-05

Heyman, John S.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340673, 250557, B65H 704

Patent

active

041123794

ABSTRACT:
A system for detecting a jam condition in a series of sequentially moving members which are passing a plurality of stations. The system finds particular application in the production of corrugated board or the like in which at the first station there may be a slitting or slotting or printing drum which is performing an operation on a series of moving corrugated board members. There are detection means at each station and successive signals from one station indicating the presence of a member at that station without a resetting signal from the next sequential station will provide a signal indicative of a jam condition. There are means to prevent a false indication of a jam which can be caused by the absence of a member at the first station in the system.

REFERENCES:
patent: 3532990 (1970-10-01), Kasper
patent: 3737159 (1973-06-01), Washio et al.
patent: 3778629 (1973-12-01), Terryn
patent: 3878540 (1975-04-01), Kawai
patent: 3944933 (1976-03-01), Gallet
patent: 4066969 (1978-01-01), Pearce et al.

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