Patent ID: 8763866

Claim:
A vessel that can be filled with liquid and closed in a pressure-tight condition, and from which liquid can be withdrawn, comprising: an insert that can be fixed in a sealed manner in an opening of the vessel comprising: a housing having a longitudinally extending central axis; a high-pressure CO 2 cartridge disposed within said housing; a pressure-regulating valve for regulating the discharge of CO 2 from said cartridge; a piercing needle for piercing said high-pressure CO 2 cartridge; and a rotary knob, engageable with said piercing needle, to actuate piercing of said high-pressure CO 2 cartridge, said rotary knob being rotatably mounted in said housing to permit rotation of said rotary knob about said central axis and in a longitudinally fixed manner to prevent movement of said rotary knob longitudinally within said housing, and said rotary knob being accessible from outside of the vessel; a longitudinally guided slide received within said housing, which engages with said rotary knob and said piercing needle to actuate said piercing needle; and inclined surfaces extending in circumferential direction on said rotary knob, which are in contact with said slide, for moving said slide and said piercing needle longitudinally towards said high-pressure CO 2 cartridge for piercing said high-pressure CO 2 cartridge upon rotation of said rotary knob.