Patent ID: 7290571

Claim:
A filling device for an anesthetic evaporator, which receives a connection device of an anesthetic bottle, the filling device comprising: a filling valve, which is intended to open or close as needed, wherein the anesthetic bottle and an anesthetic tank of the anesthetic evaporator are connected with one another during the filling operation in the form of communicating vessels via a fluid channel that can be closed by the liquid level of the anesthetic in the anesthetic tank; a vent hole, which can be opened or closed as needed, said vent hole being located above the fluid channel, said vent hole defining means for filling the anesthetic tank with an additional volume of anesthetic, the vent hole being located above the liquid level of said fluid channel; and a vent valve which opens or closes the vent hole, said vent valve being actuated via the filling valve in such a way that it can perform lifting motions such that it is switched into the open position immediately after the filling operation and is switched into the closed position during the filling operation, wherein the vent valve has a spring-loaded closing bolt, which is telescopically displaceable in relation to a valve plate of the filling valve and opens or closes the vent hole.