Patent ID: 7253002
Filing Date: 2007-08-07
Classification: B65D,F17C,G01N

Abstract:
1. A fluid storage and dispensing apparatus comprising a fluid storage and dispensing vessel including a neck portion and a valve head assembly attached to said vessel at said neck portion, and a shrink-wrapped colorimetric film effective in the presence of leaking gas from said vessel to undergo a color change indicative of said leaking gas, said shrink-wrapped colorimetric film being sealed to an exterior surface of the vessel and overlying the neck portion of the vessel and the valve head assembly to define an interior void volume enclosed by the shrink-wrapped film, wherein said enclosed interior void volume surrounds the neck portion and valve head assembly, whereby gas leakage at said neck portion or at said valve head assembly can enter the enclosed interior void volume and distribute throughout said enclosed interior void volume to effect a color change in the shrink-wrapped film surrounding the neck portion and valve head assembly, thereby providing a visually perceptible response to a leakage event.