Patents
US 12609234 B2: Planar transformer
- Granted
- 2026-04-21
- Filed
- 2022-12-21 application 18086136
- Type
- Utility · 1 claim
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A planar transformer including first and second parts of a core with least one of the first and second parts having a center post that resides in an aperture of a PWB. The PWB includes primary windings and secondary windings that surround the center post, are magnetically coupled by the core, and are electrically independent. Separating an uppermost winding from the first part of the core is a first prepreg structure and separating a lowermost winding from the second part of the core is a second prepreg structure. There being no windings disposed between the first and second prepreg structures and the core. This planar transformer structure inhibits the windings from electrically shorting through the core when the planar transformer is subjected to shock or vibration. One variant includes the use of pre-form adhesives sheets located between the solder mask layers of the PWB and the core that further inhibit the windings from shorting through the core.
Source: PTBLXML, file of 2026-04-21 (ipgb20260421.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| L3Harris Technologies, Inc. 160 patents | US company or organization | Melbourne, FL | PTBLXML, file of 2026-04-21 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Paul Kern | Loveland, OH | PTBLXML, file of 2026-04-21 | ||
| Justin Graves | Middletown, OH | 5 | PTBLXML, file of 2026-04-21 | |
| Josh Basler | Cincinnati, OH | PTBLXML, file of 2026-04-21 | ||
| Nathan Blake | Miamisburg, OH | PTBLXML, file of 2026-04-21 | ||
| Dung Nguyen | Cincinnati, OH | PTBLXML, file of 2026-04-21 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F27/2804 | PTBLXML, file of 2026-04-21 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-07-27 | Assignment Assignment of assignor's interest | L3HARRIS TECHNOLOGIES, INC. signed 2026-07-25 AEROJET ROCKETDYNE, INC. signed 2026-07-25 AEROJET ROCKETDYNE OF DE, INC. signed 2026-07-25 L3HARRIS CINCINNATI ELECTRONICS CORPORATION signed 2026-07-25 | ROCKETFORCE TECHNOLOGIES LLC MELBOURNE, FL | 76068/283 | PASDL, file of 2026-10-15 |
| 2023-02-09 | Assignment Assignment of assignor's interest | KERN, PAUL signed 2023-01-03 GRAVES, JUSTIN signed 2022-12-23 BASLER, JOSH signed 2023-01-09 BLAKE, NATHAN signed 2023-01-03 NGUYEN, DUNG signed 2023-01-05 | L3HARRIS TECHNOLOGIES, INC. MELBOURNE, FL | 62639/740 | 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.