Patents
US 9166456 B2: System and method to allow a synchronous motor to successfully synchronize with loads that have high inertia and/or high torque
- Granted
- 2015-10-20
- Filed
- 2012-03-28 application 13432237
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A mechanical soft-start type coupling is used as an interface between a line start, synchronous motor and a heavy load to enable the synchronous motor to bring the heavy load up to or near synchronous speed. The soft-start coupling effectively isolates the synchronous motor from the load for enough time to enable the synchronous motor to come up to full speed. The soft-start coupling then brings the load up to or near synchronous speed.
Source: PVGPATDIS, file of 2026-04-10 (ipg151020.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 |
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 | F16D37/00 | 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 |
| Y10T | Technical subjects covered by former us classification | Y10T29/49009 | 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 |
| 2013-08-12 | Government interest Confirmatory license | BALDOR ELECTRIC COMPANY signed 2013-08-05 | ENERGY, UNITED STATES DEPARTMENT OF WASHINGTON, DC | 31088/245 | ECORSEXC, file of 2026-09-25 |
| 2012-03-28 | Assignment Assignment of assignor's interest | MELFI, MICHAEL J. signed 2012-03-27 | BALDOR ELECTRIC COMPANY FORT SMITH, AR | 27944/506 | 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.