H02P 25/188
Wherein the motor windings are switched from series to parallel or vice
Official title: {wherein the motor windings are switched from series to parallel or vice versa to control speed or torque}
H02P25/188 (Wherein the motor windings are switched from series to parallel or vice) appears on 90 US grants and 106 published applications in this corpus.
Search patents in H02P- Granted patents
- 90
- Published applications
- 106
- Assignees
- 67
- Inventors
- 204
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 5 |
| 2012 | 1 | 3 |
| 2013 | 1 | 7 |
| 2014 | 3 | 7 |
| 2015 | 5 | 7 |
| 2016 | 8 | 8 |
| 2017 | 9 | 3 |
| 2018 | 4 | 8 |
| 2019 | 3 | 6 |
| 2020 | 5 | 6 |
| 2021 | 7 | 6 |
| 2022 | 5 | 7 |
| 2023 | 4 | 9 |
| 2024 | 9 | 12 |
| 2025 | 3 | 3 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Motor drive system for a household appliance4 Aug 2026US 12,700,818 B2BSH Hausgeräte GmbH
- Multi-phase motor switching device and multi-phase motor2 Jun 2026US 12,647,059 B2Autonetworks Technologies, Ltd.
- Power tool including configurable motor stator windings14 Apr 2026US 12,603,548 B2Milwaukee Electric Tool Corporation
- Converter and a method for driving an electric machine10 Mar 2026US 12,573,975 B2Danfoss Editron Oy
- Variable torque motor/generator/transmission3 Mar 2026US 12,567,823 B2Falcon Power, LLC
- Drive system of working machine8 Oct 2026US 2026/0308868 A1
- Control device, winding switching system, control method, and control program20 Aug 2026US 2026/0246409 A1Autonetworks Technologies, Ltd.
- Winding switching system, vehicle motor drive system, control device, control method, and computer program30 Jul 2026US 2026/0221921 A1Autonetworks Technologies, Ltd.
- Work machine9 Jul 2026US 2026/0196957 A1Koki Holdings Co., Ltd.
- Systems, methods, and devices, for electrical machines having variable operating characteristics19 Feb 2026US 2026/0051779 A1ePropelled Inc.
Most cited
By later US patents
- Direct current motor with independently driven and switchable stators1,152US 8,575,880 B22013
- Controller for permanent magnet generator155US 5,625,276 AColeman Powermate, Inc. · 1997
- Load demand throttle control for portable generator and other applications88US 6,018,200 AColeman Powermate, Inc. · 2000
- Throttle controlled generator system58US 5,886,504 AColeman Powermate, Inc. · 1999
- Permanent magnet direct current (PMDC) machine with integral reconfigurable winding control53US 5,912,522 A1999