Patents
US 9285496 B1: Truncated half-sine methods for metal detectors
- Granted
- 2016-03-15
- Filed
- 2013-10-22 application 14060200
- Type
- Utility · 31 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
This invention relates to a metal detector where a coil is used to transmit a periodic magnetic field to energize metal objects that are concealed and often buried or hidden in a matrix (ground) containing ferromagnetic minerals. There are many difficult and often simultaneous challenges, such as detecting large deep targets, detecting minutely small targets, identifying target properties, ignoring the ferromagnetic matrix, avoiding a net magnetic field which can trigger magnetic sensors in land mines, and ignoring conductive salt responses. Either time-domain or frequency domain methods have been used to address these challenges with mixed levels of success. The ability to simultaneously use time-domain and frequency-domain methods can expand detection capability. Techniques are presented for achieving these goals.
Source: PVGPATDIS, file of 2026-04-10 (ipg160315.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| White's Electronics, Inc. 9 patents | US company or organization | Sweet Home, OR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Carl W. Moreland | Corvallis, OR | 5 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01V | Geophysics; gravitational measurements; detecting masses or objects; tags | G01V3/10 | 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 |
|---|---|---|---|---|---|
| 2022-03-01 | Assignment Assignment of assignor's interest | WHITE'S ELECTRONICS, INC. signed 2020-10-16 | GARRETT ELECTRONICS, INC. GARLAND, TX | 59129/659 | ECORSEXC, file of 2026-09-25 |
| 2014-06-03 | Assignment Assignment of assignor's interest | MORELAND, CARL signed 2014-05-22 | WHITE'S ELECTRONICS, INC. SWEET HOME, OR | 33013/146 | ECORSEXC, file of 2026-09-25 |
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.