Railways – Selective delivery
Patent
1976-09-13
1978-01-17
Kunin, Stephen G.
Railways
Selective delivery
198352, 214 11R, G06K 710
Patent
active
040685977
ABSTRACT:
A conveyor system wherein a traveling mechanism is moved in a predetermined path and selectively controlled in its movement including an encoder unit mounted on the mechanism and a readout unit mounted along the path and wherein the encoder unit provides a plurality of input signals and the readout unit reads the signals to actuate a control device along the path to determine the path of movement of the traveling mechanism. A control circuit is associated with said encoder and readout units and comprises a readout circuit and a logic circuit. The readout circuit includes an AND circuit having an input for receiving signals from the encoder unit and transmitting an output signal when the code on the encoder unit matches the code on the readout unit. The logic circuit has an input and an output. The output of the readout circuit is coupled to the input of the logic circuit while maintaining the readout circuit electrically isolated from the logic circuit. The output of the logic circuit is coupled to the control device along the path of the traveling mechanism while maintaining the logic circuit and the control device electrically isolated from one another.
REFERENCES:
patent: 3171362 (1965-03-01), Noye et al.
patent: 3751640 (1973-08-01), Daigle et al.
patent: 3801837 (1974-04-01), Pease et al.
patent: 3958126 (1976-05-01), Bryant
Grayhill, Inc., Solid State Relays, 1973, pp. 1-8, 561 Hillgrove Ave., La Granee, Illinois, 60525.
Jayson, Joels, et al., Coupling Circuits with Light, Bell Laboratories Record, vol. 54, No. 1, 1-1976, pp. 21-25.
American Chain & Cable Company, Inc.
Kunin Stephen G.
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