Patents
US 11397266 B2: GPS assisted walkover locating system and method
- Granted
- 2022-07-26
- Filed
- 2019-08-23 application 16549740
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method and system for using GPS signals and a magnetic field to track an underground magnetic field source. A tracker having an antenna for detecting the magnetic field and a GPS receiver is coupled to a processor. The magnetic field is used by the antenna to direct the tracker to a field null point. Once multiple measurements of the field are taken, the changes in signal strength as the absolute position of the tracker is changed, are used to determine whether the closest field null point is in front of or behind the underground beacon. The position and depth of the beacon can then be estimated.
Source: PVGPATDIS, file of 2026-04-10 (ipg220726.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| SUBSITE, LLC 2 patents | US company or organization | Perry, OK | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Scott B. Cole | Edmond, OK | 39 | PVGPATDIS, file of 2026-04-10 | |
| Brian J. Schrock | Pleasant Hill, TX | 12 | PVGPATDIS, file of 2026-04-10 | |
| Klayton Day Jones | Perry, OK | 9 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01S | Radio direction-finding; radio navigation; determining distance or velocity by use of radio waves; locating or presence-detecting by use of the reflection or reradiation of radio waves; analogous arrangements using other waves | G01S19/45 | PVGPATDIS, file of 2026-04-10 |
| G01V | Geophysics; gravitational measurements; detecting masses or objects; tags | G01V3/081 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2022-06-27 | Assignment Assignment of assignor's interest | SUBSITE, LLC signed 2019-12-17 | THE CHARLES MACHINE WORKS, INC. PERRY, OK | 60325/330 | PASDL, file of 2026-10-15 |
| 2019-10-01 | Assignment Assignment of assignor's interest | COLE, SCOTT B. signed 2019-09-03 SCHROCK, BRIAN J. signed 2019-09-13 JONES, KLAYTON DAY signed 2019-09-03 | SUBSITE, LLC PERRY, OK | 50586/966 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.