Patent ID: 8061393

Claim:
A filling device for filling a reservoir ( 10 ) of variable working volume with a fluid, comprising: sealing means ( 46 ) for isolating the inside of the reservoir from the outside; evacuation means ( 48 ) for evacuating the content of the reservoir; evacuating/filling head that is suitable for being fitted in leaktight manner on the reservoir, the head being connectable to a vacuum source and to a fluid-injection source; the head comprising a sleeve that is provided with the sealing means for sealing an opening of the reservoir and a vacuum connector for connecting to the vacuum source; and a fluid-injection plunger that is slidably displaceable in the sleeve; wherein the plunger is displaceable between two leaktight abutment positions, the evacuation means communicating with the reservoir while the plunger is between the two abutment positions.