Patent ID: 7669616

Claim:
Apparatus for puncturing a gas filled bottle, comprising: a push rod having a longitudinal axis, having a first end, having a second end, and having an outer surface, wherein the outer surface of the push rod has a tapered region tapering toward the longitudinal axis of the push rod in a direction toward the second end of the push rod; a barrel cap having a longitudinal axis, having a first end, having a second end, having an outer surface, and having an inner surface, wherein the barrel cap comprises a hole extending from the outer surface of the barrel cap to the inner surface of the barrel cap, wherein the push rod is disposed within the barrel cap so that at least a portion of the outer surface of the push rod is in proximity to at least a portion of the inner surface of the barrel cap, and wherein the push rod is disposed within the barrel cap so that the tapered surface of the push rod is in proximity to the hole; a barrel ram having a longitudinal axis, having a first end, having a second end, and having an inner surface, wherein the inner surface of the barrel ram has a tapered region tapering away from the longitudinal axis of the barrel ram in a direction toward the second end of the barrel ram, wherein the barrel cap is disposed within the barrel ram so that at least a portion of the outer surface of the barrel cap is in proximity to at least a portion of the inner surface of the barrel ram, and wherein the barrel cap is disposed within the barrel ram so that the tapered surface of the barrel ram is in proximity to the hole; a retention element disposed in the hole and disposed to contact the tapered surface of the push rod and to contact the tapered surface of the barrel ram; and a spring adapted to provide a spring force pushing the first end of the push rod away from the second end of the barrel ram.