A paper currency collection detection arrangement used in an automatic vending machine formed of a paper currency receiving unit, a paper currency collection cabinet, and a detection unit. The paper currency collection cabinet has a bottom sensor hole, and a slide moved to close/open the sensor hole...http://www.google.de/patents/US20030126022?utm_source=gb-gplus-sharePatent US20030126022 - Paper currency collection detection arrangement for an automatic vending machine
