| 摘要 |
A gas conduit is shown that provides a fully interlocking metal inner core and a flexible outer jacket. The fully interlocking nature of the inner core prevents or minimizes leaks in the event that the outer jacket is damaged or destroyed, for instance from exposure to an open flame. Interlocking end fittings are used, which do not depend on any rubber or thermoplastic for retention to the tubing/core. Thus, even when exposed to an open flame, the fittings remain in place and relatively leak tight. An indoor version is also shown, which additionally comprises a flexible inner tube disposed within the metal core.
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