Patents
US 8102091 B2: Interior permanent magnet motor including rotor with unequal poles
- Granted
- 2012-01-24
- Filed
- 2009-07-30 application 12512890
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An electric machine includes a stator and a rotor core including a first rotor portion positioned adjacent the stator and having an outside diameter. The first rotor portion includes a plurality of elongated slots that define a plurality of poles. The electric machine also includes a plurality of magnets. Each of the plurality of magnets is positioned within one of the slots and arranged such that each of the plurality of poles has a magnetic arc length that is different than a magnetic arc length of any adjacent pole.
Source: PVGPATDIS, file of 2026-04-10 (ipg120124.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Regal Beloit EPC Inc. 12 patents | US company or organization | Beloit, WI | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Dan M. Ionel | Glendale, WI | 16 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02K | Dynamo-electric machines | H02K1/2766 | 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 |
|---|---|---|---|---|---|
| 2013-01-08 | Assignment Assignment of assignor's interest | RBC MANUFACTURING CORPORATION signed 2012-12-31 | REGAL BELOIT AMERICA, INC. BELOIT, WI | 29582/236 | PASDL, file of 2026-10-15 |
| 2013-01-07 | Assignment Assignment of assignor's interest | REGAL BELOIT EPC, INC. signed 2012-12-31 | RBC MANUFACTURING CORPORATION BELOIT, WI | 29576/401 | ECORSEXC, file of 2026-09-25 |
| 2011-09-15 | Assignment Assignment of assignor's interest | A. O. SMITH CORPORATION signed 2011-08-22 | REGAL BELOIT EPC INC. BELOIT, WI | 26913/714 | ECORSEXC, file of 2026-09-25 |
| 2009-09-22 | Assignment Assignment of assignor's interest | IONEL, DAN M. signed 2009-08-06 | A.O. SMITH CORPORATION MILWAUKEE, WI | 23268/143 | 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.