Patents
US 9024713 B1: Extreme duty encapsulated transformer coil with corrugated cooling ducts and method of making the same
- Granted
- 2015-05-05
- Filed
- 2013-08-01 application 13956638
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Methods and devices for an extreme duty transformer with wet wound primary and secondary winding encapsulated with a resin and having corrugated insulating material as cooling ducts as a transformer capable of withstanding extreme mechanical stresses in an underground mining environment. The method includes providing a resin impregnated rectangular winding form, forming a secondary winding with alternating layers of magnet wire with a resin impregnated insulating collar above and below the magnet wire and corrugated insulating material extending the full or partial circumference and width of the coil. An insulating layer of corrugated material and resin impregnated insulation is wound to separate the primary from the secondary windings. The primary winding is wound with alternating magnet wire layers and resin impregnated insulation layers and a resin impregnated outer layer covers the circumference of the coil to produce an oval mechanically robust construction preventing winding displacement and sealing out environmental contaminants.
Source: PVGPATDIS, file of 2026-04-10 (ipg150505.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Power Distribution Products, Inc. 1 patents | US company or organization | Richlands, VA | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kurt Carlson | Elizabethton, TN | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F27/085 | 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 |
|---|---|---|---|---|---|
| 2013-08-01 | Assignment Assignment of assignor's interest | CARLSON, KURT signed 2013-07-29 | POWER DISTRIBUTION PRODUCTS, INC. CHILHOWIE, VA | 30923/709 | 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.