Control system for supermarket or luggage trolleys - has automatic lock on each trolley released by insertion of money and returns money when trolley is locked again at coupling station

摘要

Insertion of money releases a single shopping trolley from a fastening device. The money is refunded when the trolley is returned to a fastening device. The system comprises fixed coupling elements, and each trolley has a coin or note operated lock which can be locked onto a fastening device in a locking area. Alternatively it may be locked to the automatic lock of another trolley, provided the other trolley is locked to a fastening device or to a further trolley. When the money is inserted, only the last trolley is eleased, and the money is refunded when the trolley is returned and locked to a fastening device or to the lock of another fastened trolley.