Patents
US 9620275 B2: Method of constructing a rotor for a line start interior permanent magnet motor
- Granted
- 2017-04-11
- Filed
- 2014-05-28 application 14288638
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method includes: (1) providing a rotor for a line start interior permanent magnet motor wherein the rotor has rotor bars slots extending axially along a length of the rotor configured to receive rotor bar material, and magnet slots extending axially along a length of the rotor configured to receive magnetic material; (2) disposing rotor bar material in the rotor bar slots; (3) arranging a first end member on an axial end of the rotor; (4) disposing magnetic material in the magnet slots; (5) magnetizing the magnetic material; and (6) arranging a second end member on the rotor opposite the first end member. The step of arranging the second end member on the rotor occurs after magnetizing the magnetic material.
Source: PVGPATDIS, file of 2026-04-10 (ipg170411.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Baldor Electric Company 43 patents | US company or organization | Barling, AR | BALDOR ELECTRIC CO SEC filer FUZZY low confidence: same name (legal endings aside), one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David McKinney | Hoschton, GA | 3 | PVGPATDIS, file of 2026-04-10 | |
| William E. Martin | Greenville, SC | 20 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F13/003 | PVGPATDIS, file of 2026-04-10 |
| H02K | Dynamo-electric machines | H02K1/223 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T29/49014 | 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 |
|---|---|---|---|---|---|
| 2026-09-28 | Assignment Assignment of assignor's interest | ABB MOTORS AND MECHANICAL, INC. signed 2026-06-08 | ABB SCHWEIZ AG BADEN | 76167/619 | PASDL, file of 2026-10-15 |
| 2026-08-05 | Name change Change of name | BALDOR ELECTRIC COMPANY signed 2018-02-26 | ABB MOTORS AND MECHANICAL INC. FORT SMITH, AR | 76152/651 | PASDL, file of 2026-10-15 |
| 2014-05-28 | Assignment Assignment of assignor's interest | MARTIN, WILLIAM E. signed 2014-05-27 MCKINNEY, DAVID signed 2014-05-27 | BALDOR ELECTRIC COMPANY FORT SMITH, AR | 32974/287 | 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.