Product release control for a vending machine
阅读：254发布：2021-01-24
专利汇可以提供Product release control for a vending machine专利检索，专利查询，专利分析的服务。并且A product release control means for a coin operated vending machine comprises a trigger capacitor which is charged, after the proper coins have been accepted by the machine and a product has been selected, to apply a turn-on firing voltage across the gate of a thyristor switch. A storage capacitor is then discharged, causing the energizing of a product release solenoid for dispensing the selected product.，下面是Product release control for a vending machine专利的具体信息内容。
1. A vending machine comprising: a credit means for producing a credit signal, after a predetermined amount of money is accepted by the machine; an oscillator means having an on-condition for generating a turn-on voltage and an off-condition, said oscillator being associated with said credit means so that said credit signal causes the oscillator to switch from the on to the offcondition; a switch member switched on by the turn-on voltage of said oscillator means, said switch member being ''''off'''' when said oscillator is in the off-condition; and means to enable said machine to receive money when said switch member is ''''on'''' and to reject money when said switch member is ''''off.''''
2. A vending machine comprising: a product release means including a solenoid, the energizing of said solenoid causing said product to be released; a vend-thyristor having an on-condition and an off-condition; trigger means for switching said vend-thyristor from the off to the on-condition; a product selector switch having an on-position and an off-position, said selector being associated with said trigger means; a storage capacitor; and an empty switch having a product-position and an empty-position, said storage capacitor charging through said empty switch when in the product position, said vend-thyristor being switched into the on condition when the selector switch is switched to the on-position to cause said storage capacitor to discharge, said empty switch switching to the empty-position when all the products in the machine Have been dispensed to prevent charging of said storage capacitor.
3. The vending machine of claim 2, wherein said trigger means includes a trigger capacitor and said machine further includes: credit means to provide a credit signal when a predetermined amount of money is accepted by the machine; and reset means to remove said credit signal and switch said vend-thyristor to the off-condition during discharge of said storage capacitor, said trigger capacitor charging to cause said vend-thyristor to switch to the on-condition after the selector switch is switched to the on-position.
4. A vending machine for dispensing a selected product comprising: a credit means for producing a credit signal after a predetermined amount of money is accepted by the machine; reset means to provide a reset signal for removing said credit signal; and trigger means for starting the dispensing of said product when said credit signal is present and after said product is selected, and for preventing the dispensing of a second said product prior to the removal of said credit signal.
5. The vending machine of claim 4, wherein said credit means includes a credit-thyristor having an on-condition and an off-condition, said credit-thyristor being on one of said conditions when providing said credit signal, said credit-thyristor being switched into the other condition by said reset signal to remove said credit signal.
6. The vending machine of claim 4 includes a money control means comprising: an oscillator means having an on-condition for generating a turn-on voltage and an off-condition, said oscillator being associated with said credit means so that said credit signal causes the oscillator to switch From the on to the off-condition; a switch member switched ''''on'''' by said oscillator turn-on voltage, said switch member being ''''off'''' when said oscillator is in the off-condition; and means to enable said machine to receive money when said switch member is ''''on'''' and to reject money when said switch member is ''''off.''''
7. The vending machine of claim 6, wherein said oscillator means further includes: a delay means to prevent the oscillator from switching ''''on'''' until said storage capacitor has been recharged to provide another vend.
8. The vending machine of claim 6, wherein said switch member further includes: a thyristor switch having an on-state and an off-state said oscillator generating a trigger voltage to fire said thyristor switch ''''on'''' during one part of each cycle of the input alternating current (AC) voltage to said machine; and means for switching said thyristor switch ''''off'''' during another part of said AC voltage cycle.
9. The vending machine of claim 4, wherein said trigger means includes: a trigger capacitor, said trigger capacitor electrically charging to cause said starting of said dispensing of the product, said trigger capacitor when charged preventing said dispensing of said second product.
10. The vending machine of claim 9, wherein said trigger means includes: a discharge resistive means associated with the trigger capacitor for providing a discharge path for the trigger capacitor, the time constant of the discharge resistive means and the trigger capacitor being sufficiently long to prevent more than one charging of the trigger capacitor when said credit signal is present.
11. The vending machine of claim 9, wherein said credit signal is coupled to one side of said trigger capacitor, to cause said charging of the trigger capacitor when said product is selected.
12. The vending machine of claim 11, includes a uni-directional means to provide a low impedance path in one direction for coupling said credit signal to the trigger capacitor and a high impedance path in the opposite direction of said uni-directional means.
13. The vending machine of claim 9, wherein said trigger means includes: a charging resistive means associated with the trigger capacitor for providing a charging path for the capacitor, the time constant of the resistive means and the trigger capacitor being sufficiently short, to prevent starting of the dispensing of more products than said first mentioned selected product when said credit signal is present.
14. The vending machine of claim 13 includes: an actuator means having an on-state and an off-state; a product release means, said product being dispensed by said product release means after said actuator is switched from the off to the on-state, said actuator means including a vend-thyristor having an on-condition and an off-condition, said vend-thyristor being associated with said charging resistor means of the trigger capacitor, said vend-thyristor being switched from the off to the on-condition during charging of said trigger capacitor.
15. The vending machine of claim 14, wherein said reset means is associated with said vend-thyristor for switching said vend-thyristor from the on to the off-condition simultaneously when removing said credit signal.
16. The vending machine of claim 4 includes: a storage capacitor for discharging an electrical charge to cause said dispensing of said product after said trigger means has started said dispensing, said storage capacitor when being discharged cooperating with said reset means to cause said reset signal.
17. The vending machine of claim 16 includes: an empty switch for preventing said storage capacitor from charging when all the products in the machine have been dispensed.
18. The vending machine of claim 16 further includes: a ballast lamp disposed in the charging path of said storage capacitor for limiting the charging current of the storage capacitor.
19. The vending machine of claim 16 further includes a diode to provide a low impedance charging path for said storage capacitor and a high impedance with respect to discharge of the storage capacitor.
20. The vending machine of claim 16 includes: a product release means including a solenoid, the energizing of said solenoid causing said product to be released; a vend-thyristor having an on-condition and an off-condition; a product selector switch having an on-position and an off-position, said selector switch being associated with said trigger means; a product empty switch having a product-position and an empty-position; and a diode interposed between a voltage source and said solenoid to present a low impedance when the storage capacitor is charging and a high impedance when the storage capacitor is discharging, the charging path of said storage capacitor including said diode and said empty switch when in the product-posiiton and said solenoid, said vend-thyristor being switched to the on-condition when the selector switch is switched into the on-position to cause said storage capacitor to discharge via said solenoid and said empty switch when in the product-position and said vend-thyristor, said solenoid being energized when said storage capacitor is discharged.
21. The vending machine of claim 16 wherein said reset means is associated with said storage capacitor to provide a reset signal when the capacitor is being discharged, said reset signal being of opposite polarity as compared with the charged voltage of the storage capacitor.
22. The vending machine of claim 21, wherein said reset means comprises a first diode and a second diode, one of said diodes providing a low impedance charge path and a high impedance discharge path for said storage capacitor, the other of said diodes providing a low impedance discharge path and a high impedance charge path for said storage capacitor, said other diode providing said opposite polarity signal near the end of the discharge of said storage capacitor.
23. The vending machine of claim 21, wherein said credit means is associated with one side of said storage capacitor and said first and second diodes are associated with the other side of the capacitor.
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