Patents
US 9780620 B2: Coupling with concentric contact around motor shaft for line start synchronous motor
- Granted
- 2017-10-03
- Filed
- 2014-05-05 application 14269437
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method comprises providing a line-start synchronous motor. The motor has a stator, a rotor core disposed within the stator, and a motor shaft. In accordance with a step of the method, a coupling for coupling a load to the motor is provided. The coupling has a motor shaft attachment portion configured to provide substantially concentric contact around the shaft at the end of the motor shaft. The coupling has a load attachment portion configured to operatively connect to a load. In accordance with a step of the method, a load is coupled to the motor with the coupling, and driven from start to at least near synchronous speed during steady state operation of the motor with a load coupled thereto. The motor shaft attachment portion may comprise a bushing assembly with matching and opposed tapered surfaces that cooperate to secure the motor shaft attachment portion around the motor shaft.
Source: PVGPATDIS, file of 2026-04-10 (ipg171003.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 |
|---|---|---|---|---|
| Michael J. Melfi | Broadview Heights, OH | 8 | PVGPATDIS, file of 2026-04-10 | |
| Galen Burdeshaw | Simpsonville, SC | 7 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02K | Dynamo-electric machines | H02K7/003 | PVGPATDIS, file of 2026-04-10 |
| F16D | Couplings for transmitting rotation; clutches; brakes | F16D3/74 | PVGPATDIS, file of 2026-04-10 |
| H02P | Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils | H02P1/46 | 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 |
|---|---|---|---|---|---|
| 2021-09-20 | Name change Change of name | BALDOR ELECTRIC COMPANY signed 2018-02-26 | ABB MOTORS AND MECHANICAL INC. FORT SMITH, AR | 58388/629 | ECORSEXC, file of 2026-09-25 |
| 2021-09-20 | Assignment Assignment of assignor's interest | ABB MOTORS AND MECHANICAL INC. signed 2021-09-17 | ABB SCHWEIZ AG BADEN | 57532/502 | ECORSEXC, file of 2026-09-25 |
| 2014-05-19 | Assignment Assignment of assignor's interest | MELFI, MICHAEL J. signed 2014-04-22 BURDESHAW, GALEN E. signed 2014-05-01 | BALDOR ELECTRIC COMPANY FORT SMITH, AR | 32925/207 | 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.