Self propelled internal pipe arching apparatus
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United States of America Patent
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-
Apr 10, 1990
Grant Date -
N/A
app pub date -
Jun 3, 1988
filing date -
Jun 3, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An internal pipe arching apparatus has a self propelled unit for ground supporting an elongated longitudinal beam along its length. The unit is adapted to drive the beam into a pipe along its axis and lift the beam to a pipe arching position. The beam has an internal pipe arching means mounted thereto for forcible arching of a pipe when said beam is in the arching position. The mobile unit provides means for transporting and controlling the pipe expansion means.
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