LOOK-AHEAD VEND CONTROL EMPLOYING A COMMON VEND ENERGIZATION MONITOR TO EFFECT VEND SELECTION RECOGNITION FOR VENDING

摘要

ABSTRACT OF THE INVENTIONA vend control circuit for a multi-channel vendor,including a credit entry circuit, a plurality of selectionswitches actuatable for selecting different vend selections, aplurality of vend motors, each vend selection having a vendmotor associated therewith, a plurality of vend channels each ofwhich may have a different, pre-established vend priceassociated therewith, a master control circuit for accumulatingtotal credit entered, which master control circuit sequentiallycompares the total credit entered against the vend prices ofeach of the vend channels and produces for each such comparisona vend channel authorization signal if the total creditdeposited at least equals the vend price, a delivery controlcircuit for effecting energization of a particular vend motorwhen a vend selection switch with which such particular vendmotor is associated is actuated during the time that a vendchannel authorization signal is being produced for the vendchannel to which the actuated switch belongs, and a monitorcircuit connected in common to the plurality of vend channelsfor detecting the energization of any vend motor, the mastercontrol circuit responsive to detection of such vend motorenergization to terminate further sequential comparison and toeffect vend delivery circuit lock-up for a sufficiently longenough period to permit the energized vend motor to operate.