Tube lancing machine
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United States of America Patent
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Sep 30, 2014
Issued Date -
N/A
app pub date -
Dec 22, 2011
filing date -
Nov 21, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A pair of parallel metal lances is driven by a transversal drive into and out of heat exchanger tubes. The lances are supported by a plurality of spaced apart, retractable door supports so that the transversal drive mechanism can approach the tube sheet of the heat exchanger tubes as closely as possible. A pair of rotational drive motors rotates the lances at a user controllable speed. As the lances are moved into the tubes, the interlocked support doors retract one at a time, sequentially. Similarly, as the lances are withdrawn from the tubes, the support doors close one at a time in an interlocked fashion.
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