Liquid refiller

Abstract

The present invention provides a liquid refiller for filling liquid in a container. The refiller is comprised of a first mechanism for injecting the liquid into the container and a second mechanism for releasing from the container air compressed resulting from injecting the liquid into the container. The first mechanism may include a case and an injection piston movable inside the case. The second mechanism may include the injection piston and a suction piston movable inside the injection piston. The injection piston may be urged by a first urging member in such a direction as to move for injecting the liquid into the container. The refiller may also include a first locking mechanism for holding the injection piston against the urging force of the first urging member. The suction piston may be urged by a second urging member in such a direction as to move for suctioning the compressed air from the container. The refiller may also include a second locking mechanism for holding the suction piston against the urging force of the second urging member. When the liquid injection is completed, the second locking mechanism is automatically released to allow the suction piston to move by means of the second urging member in order to suction the compressed air from the container.

Dependencies are inferred from the claim text.