Patents
US 12500479 B2: Brushless motor having an overmolded rotor
- Granted
- 2025-12-16
- Filed
- 2024-07-16 application 18774557
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An electric brushless DC motor is provided including a rotor assembly having a substantially-cylindrical metallic rotor body and at least one rotor magnet mounted on a surface of the rotor body, a stator assembly rotatably disposed relative to the rotor assembly, and a molded structure formed in contact with the rotor body. The molded structure includes a first mold portion in engagement with the rotor body that integrally forms a fan at or adjacent an axial end of the rotor body, and a second mold portion extending integrally from the first mold portion at least partially in engagement with an inner surface of the rotor body. The second mold portion engages two axial ends of the at least one magnet to axially support and retain the at least one magnet relative to the rotor body.
Source: PVGPATDIS, file of 2026-04-10 (ipg251216.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| BLACK & DECKER INC. 2,415 patents | US company or organization | Meridian Avenue, CT | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John B. Fogle | White Hall, MD | 18 | PVGPATDIS, file of 2026-04-10 | |
| Colin M. Crosby | Baltimore, MD | 22 | PVGPATDIS, file of 2026-04-10 | |
| David J. Smith | Columbia, MD | 123 | PVGPATDIS, file of 2026-04-10 | |
| Merritt J. Tennison | Seattle, WA | 11 | PVGPATDIS, file of 2026-04-10 | |
| Madhur M. Purohit | Towson, MD | 21 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02K | Dynamo-electric machines | H02K7/145 | PVGPATDIS, file of 2026-04-10 |
| B25F | Combination or multi-purpose tools not otherwise provided for; details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for | B25F5/00 | 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 |
|---|---|---|---|---|---|
| 2025-07-14 | Assignment Assignment of assignor's interest | CROSBY, COLIN M. signed 2016-06-28 SMITH, DAVID J. signed 2016-06-28 FOGLE, JOHN B. signed 2016-07-11 PUROHIT, MADHUR M. signed 2016-07-11 TENNISON, MERRITT J. signed 2016-08-03 | BLACK & DECKER INC. NEW BRITAIN, CT | 71697/955 | 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.