The invention relates to a supply device for the supply of pressure fluid into at least one vehicle brake or into a pressure fluid accumulator, wherein a piston is movably arranged in an accommodating member, a carrier bears a non-return valve arranged coaxially to the piston for the purpose of ventilating...http://www.google.fr/patents/US7785086?utm_source=gb-gplus-shareBrevet US7785086 - Supply device