Moving device in pipe lines
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United States of America Patent
Stats
-
Oct 28, 2008
Grant Date -
Dec 29, 2005
app pub date -
Jun 28, 2005
filing date -
Jun 29, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A moving device in pipe lines is provided, which allows easy switching of moving/stopping and remote control of the switching by only electric wires enabling easy operation in the inside of small diameter pipe lines.The moving device 10 in pipe lines comprises a guide frame 11 in which a line of three or more coils 15, 16, 17 is interconnected flexibly in the direction of magnet flux, ring-shaped permanent magnets 19, 20, 21 provided around the periphery of the guide frame slidably in the direction of the shaft, and a control means such as computers etc. to control by a preset program selecting the direction of turning on of the coils.
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