Moving device in a pipe line
First Claim
1. A moving device in a pipe line, comprising;
- more than three segments including a front segment arranged in serial;
an extendable interconnecting means to connect adjacent segments; and
an engaging force changing means to change an engaging force of the segment which is to be moved with an inside of the pipe line to a smaller force, smaller than the engaging force of the remaining segment with the inside of the pipe line;
wherein the moving device moves back and forth by extending or retracting the extendable interconnecting means,wherein 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,wherein the drive unit has a magnet provided in the head part and an electromagnet provided in the body part, andwherein the head part moves around the body part by attracting or repelling the magnet of the head part by the magnetic force of the electromagnet.
1 Assignment
0 Petitions
Accused Products
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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Citations
11 Claims
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1. A moving device in a pipe line, comprising;
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more than three segments including a front segment arranged in serial; an extendable interconnecting means to connect adjacent segments; and an engaging force changing means to change an engaging force of the segment which is to be moved with an inside of the pipe line to a smaller force, smaller than the engaging force of the remaining segment with the inside of the pipe line; wherein the moving device moves back and forth by extending or retracting the extendable interconnecting means, wherein 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, wherein the drive unit has a magnet provided in the head part and an electromagnet provided in the body part, and wherein the head part moves around the body part by attracting or repelling the magnet of the head part by the magnetic force of the electromagnet. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A moving device in a pipe line comprising;
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more than three segments including a front segment arranged in serial; an extendable interconnecting means to connect adjacent segments; and an engaging force changing means to change an engaging force of the segment which is to be moved with an inside of the pipe line to smaller force, smaller than the engaging force of the remaining segment with the inside of the pipe line; wherein the moving device moves back and forth by extending or retracting the extendable interconnecting means, wherein 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, wherein the drive unit has an inner cable interconnecting the head part and the body part, an inner cable locking portion provided in the head part, a motor portion provided in the body part, and wherein the head part is turned around the body part by pulling in or sending out the inner cable by the motor portion. - View Dependent Claims (8, 9, 10, 11)
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Specification