Apparatus for extending ventilating conduits
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United States of America Patent
Stats
-
Nov 30, 1982
Grant Date -
N/A
app pub date -
Sep 2, 1980
filing date -
Sep 4, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for continuously extending ventilating conduits in tunnelling or mining environments includes a tubular store to which a funnel guide is releasably connected. A folded flexible ventilating pipe is received on the store and fastening means are provided to connect an end of the ventilating pipe to the end of the ventilating conduit to be extended. In use, the apparatus is advanced and the ventilating pipe is gradually pulled off the store and unfolded by being passed over the funnel guide.
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