System including an arrangement for tracking the positional relationship between a boring tool and one or more buried lines and method
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United States of America Patent
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May 26, 1998
Grant Date -
N/A
app pub date -
May 3, 1996
filing date -
May 3, 1996
priority date (Note) -
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Abstract
A system is disclosed in which a boring tool is moved through the ground in a region which includes at least one electrically conductive in-ground line. The system includes an arrangement for tracking a specific positional relationship between the boring tool and one or more in-ground lines. The arrangement generates a magnetic field from one of either the boring tool or the line. A particular characteristic of the generated field is detected at the boring tool if the field is generated from the line or is detected at the line if the field is generated from the boring tool. The characteristic varies as a function of the specific positional relationship between the boring tool and the line as the boring tool moves through the ground within the region. The arrangement is responsive to the detection of the characteristic and indicates certain changes in the positional relationship between the boring tool and each one of the lines being monitored irrespective of the approach path or orientation of the boring tool with respect to each line.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MERLIN TECHNOLOGY, INC.;DIGITAL CONTROL CORPORATION
International Classification(s)
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mercer, John E | Kent, WA | 274 | 4661 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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