Electronic circuit protection automatic power interrupt

Details Electronic circuit protection automatic power interrupt Electronic circuit protection automatic power interrupt

1993-01-11

1995-03-21

Bartuska, F. J.

Check-actuated control mechanisms

With additional, disparate means preventing fraudulent...

34082535, G07F 902

Patent

active

053987985

ABSTRACT:
A device for use with a machine, such as a vending machine, automatic teller machine, change machine, cash register, game machine, personal or business machine or the like, having a cabinet containing machine electrical circuits and a door and at least one possible point of entry through the cabinet and door by foreign substances into contact with the machine electrical circuits to cause their operation in violation of machine protocol, minimizes the damage caused by such protocol violations. The device interrupts the AC power to the machine electrical circuits in response to sensors disposed as close to the points of entry as possible. Thus, all machine circuits are shut down before damage can occur. At least one sensor proximate each of the points of entry detect the penetration of the foreign substances and initiate generation of an electrical control signal for operating the interrupt to disconnect the machine circuits from the AC power source. The control signal is generated continuously after detection of penetration of a foreign substance, even after the substance has cleared the sensor. An alarm is connected in series with a switch to the machine AC power source on the power side of the interrupt and the switch is normally open to deactivate the alarm and closes in response to the control signal to activate the alarm. A timing signal commences substantially simultaneously with the control signal and discontinues after a preselected time, discontinuance of the timing signal resulting in deactivation of the alarm after the selected period of time.

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