# US 10,246,990 B2 · Probe for trenchless guide instrument

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- Number: US 10,246,990 B2
- Document ID: US10246990B2
- Status: Granted
- Kind: B2
- Application number: 15/509,417
- Filed: 2015-04-08
- Published: 2017-10-12
- Granted: 2019-04-02
- Earliest claimed: 2014-11-21
- Assignees: Huangshan Golden Electronics Inc.
- Applicants: Huangshan Golden Land Electronics Inc.
- Inventors: Yuriy Khapochkin
- Web page: https://patentgrep.com/patent/US10246990B2

## CPC

- E21B 47/092: by detecting magnetic anomalies
- E21B 7/046: {horizontal drilling (drilling with mechanical conveying means E21B7/003)}
- E21B 47/017: Protecting measuring instruments
- E21B 47/024: of devices in the borehole (determining slope or direction of the borehole E21B47/022)
- G01D 21/02: Measuring two or more variables by means not covered by a single other subclass
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

## Abstract

A probe for a trenchless guide instrument includes an antenna, a control circuit board and at least one battery supplies power to the control circuit board; one battery is disposed inside the battery region; the control circuit board is disposed inside the electronic region; a first insulating pipe is disposed inside the antenna and outside the battery, the antenna further includes a magnetic core, and a coil winds around the magnetic cores and one end of the coil is connected to the control circuit board; the magnetic core further includes magnetic core units, each magnetic core unit is made from magnetic material, the magnetic core units are positioned on a peripheral surface of the first insulating pipe, and are insulated from each other.

## Claims

### Claim 1

A probe for a trenchless guide instrument comprising:
a battery region and an electronic region adjacent to the battery region;
an antenna;
a control circuit board disposed inside the electronic region;
at least one battery disposed inside the battery region;
a first insulating pipe disposed inside the antenna and outside the at least one battery;
a metal pipe connected to the first insulating pipe, and
a second insulating pipe disposed inside the metal pipe,
wherein,
the at least one battery supplies power to the control circuit board;
the first insulating pipe is disposed inside the battery region, and the antenna is disposed outside the first insulating pipe;
the metal pipe and the second insulating pipe are disposed inside the electronic region,
the control circuit board is disposed inside the second insulating pipe,
the antenna further comprises a magnetic core, and a coil winds around the magnetic cores and one end of the coil is connected to the control circuit board;
the magnetic core further comprises a plurality of magnetic core units, each magnetic core unit is made from magnetic material, the plurality of magnetic core units are positioned on a peripheral surface of the first insulating pipe, and are insulated from each other.

### Claim 2 (depends on 1)

The probe of claim 1, wherein each magnetic core unit is made from nickel steel.

### Claim 3 (depends on 1)

The probe of claim 1, wherein the metal pipe and the first insulating pipe each has a first end and a second end;
the first end of the metal pipe and the first end of the first insulating pipe are connected through a connecting member;
a first cover is disposed on the second end of the first insulating pipe, a second cover is disposed on the second end of the metal pipe; an outer pipe is disposed outside the antenna and the metal pipe.

### Claim 4 (depends on 1)

The probe of claim 1, wherein the first insulating pipe extends into the electronic region, a metal pipe and a second insulating pipe disposed inside the metal pipe are both disposed inside the electronic region;
the metal pipe extends into the battery region and is located between the at least one battery and the first insulating pipe; and the control circuit board is disposed inside the second insulating pipe.

### Claim 5 (depends on 4)

The probe of claim 4, wherein the second insulating pipe and the at least one battery are connected through a connecting member;
the metal pipe has a first end and a second end;
a first cover is disposed on the first end of the metal pipe; and
a second cover is disposed on the second end of the metal pipe; an outer pipe is disposed outside the antenna.

### Claim 6 (depends on 1)

The probe of claim 1, wherein a plurality of insulating spacers, extending along an axis of the first insulating pipe, are distributed around a peripheral surface of the first insulating pipe, a space between every two insulating spacers defines a positioning region; and the plurality of magnetic core units are distributed in the positioning regions forming a ring.

### Claim 7 (depends on 6)

The probe of claim 6, wherein each magnetic core unit is formed by a plurality of sheets of magnetic material, each magnetic core unit has an arc-shape cross section.

### Claim 8 (depends on 6)

The probe of claim 6, wherein each magnetic core unit is formed by a plurality of strips of magnetic material, each magnetic core unit has an arc-shape cross section.