Moving device in a pipe line
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United States of America Patent
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Jul 6, 2010
Grant Date -
May 22, 2008
app pub date -
Jul 19, 2007
filing date -
Jul 19, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A moving device in a pipeline, including: more than three segments, including a front segment, arranged in series; an extendable interconnecting element to connect adjacent segments; and an engaging force changing component to change engaging force of a segment that is to be moved with the inside of the pipeline to a smaller force, smaller than the engaging force of a remaining segment with the inside of the pipeline. The front segment has a head part, a body part, a joint part to turn the head part centering around the body part, and a drive unit to move the head part around the body part. The drive unit have a magnet provided in the head part and an electromagnet provided in the body part.
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