| 摘要 |
The invention relates to an automatic vending machine which includes a product withdrawing device by means of screws (1) mounted at different levels or floors. Each of said levels or floors has a product passage detector on their outlet comprising an infrared ray emitter (5) and a receiver (6) mounted in opposite positions so that the ray (7) crosses the outlet area and is interrupted by the passage of every unit (4) of the product being supplied. |
