Patent ID: 8857648

Claim:
A tank closure assembly for a filler neck of a vehicle tank, the tank closure assembly comprising: a closing body configured for connection to the filler neck, the closing body having a receptacle and an open top side thereof with an orifice which serves to ventilate and bleed the vehicle tank; a diaphragm which closes the orifice from an inside of the closing body; a sealing element provided in the receptacle to provide a seal at an annular gap between the filler neck and the closing body; a supporting ring which supports the diaphragm, the supporting ring being provided in the receptacle of the closing body between the sealing element and the diaphragm; and an insert element configured for receipt into the closing body, the insert element having internal threads via which the closing body is attached to the filler neck, the receptacle being formed between the insert element and a top side of the closing body.