Device on the filler neck for emission-free refuelling of motor vehicles

摘要

Adaptor for emission-less refuelling of motor vehicles by means of a gas return line (3), comprising a rubber sleeve (1) which is pulled in a gas-tight manner over the filler neck (2), is constructed in its edge region to form a ring-bellows seal (6) provided with an air cushion (9) and, when the fuel filler nozzle (11) is inserted, enters into a gas-tight and plane-sealing connection (5) with the standard ring-bellows opening (4) of the gas return line (3) when one is place against the other.