Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1997-10-31
2000-04-11
Terrell, William E.
Conveyors: power-driven
Conveyor section
Endless conveyor
1985021, B65G 4300, B65G 4710
Patent
active
060478144
ABSTRACT:
The invention relates to a method for monitoring a continuous revolving conveyor belt (4) having a connecting region (8). The connecting region (8) is monitored with the aid of two transponders (12) and (14). One of the transponders is arranged forward of the connecting region (8) and the other transponder is connected rearward of the connecting region (8). Both transponders (12) and (14) transmit respective signals to an external transmitter/receiver unit 16 wherein a conclusion is drawn as to the spacing of the two transponders (12) and (14) on the basis of the time-dependent spacing of the two signals. If the spacing s of the transponders (12) and (14) exceeds a pregiven amount, then a conclusion is drawn by the external transmitter/receiver unit (16) as to a critical change in length of the connecting region (8) and corresponding measures are initiated.
REFERENCES:
patent: 4020945 (1977-05-01), Takeno et al.
patent: 4372172 (1983-02-01), Gombocz et al.
patent: 4464654 (1984-08-01), Klein
patent: 4587852 (1986-05-01), Butler et al.
patent: 5168266 (1992-12-01), Fukuda
patent: 5441158 (1995-08-01), Skinner
Alles Rainer
Wach Thorsten
Bower K W
ContTechTrasnsportbandsysteme GmbH
Ottesen Walter
Terrell William E.
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