| 摘要 |
The invention relates to a chain-type checker for a goods transport trolley, of the type comprising a key fitted to one end of a chain, the other end of which is fixed to a trolley, said key interacting with a coin-operated lock of another trolley so as to release a deposit token (coin) which it contains by locking the two trolleys to one another, unlocking being obtained by the insertion of a deposit token which opens said lock and which is retained there. …<??>The checker according to the invention is characterised in that the checker lock comprises two levers (6), each pivoting about an intermediate axle (13), one end of each lever interacting with notches formed on said key (2'), and the opposite end of each lever (6) interacting with said deposit token (7), said levers (6) being subjected to the action of a locking tumbler (5) returned by a spring (4) and interacting with said key (2'). …<??>The invention is used for shop trolleys. …<IMAGE>… |
