H02K 23/42
Having split poles, i.e. zones for varying reluctance by gaps in poles
Official title: having split poles, i.e. zones for varying reluctance by gaps in poles or by poles with different spacing of the air gap
H02K23/42 (Having split poles, i.e. zones for varying reluctance by gaps in poles) appears on 16 US grants and 7 published applications in this corpus.
Search patents in H02K- Granted patents
- 16
- Published applications
- 7
- Assignees
- 12
- Inventors
- 40
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Direct-current electric motor and use thereof as a drive of a liftgate21 Oct 2025US 12,451,783 B2Stabilus GmbH
- Permanent magnet rotor with enhanced demagnetization protection25 May 2021US 11,018,567 B2Ford Global Technologies, LLC
- Electric rotating machine with salient poles5 Jan 2016US 9,231,460 B2Valeo Equipements Electriques Moteur
- Transverse flux motor as an external rotor motor and drive method7 Jan 2014US 8,624,463 B2LEANTEC Motor GmbH
- Mechanically-commutated DC motor23 Dec 2003US 6,667,564 B1Buehler Motor GmbH
- Direct-current electric motor and use thereof as a drive of a liftgate11 Jan 2024US 2024/0014723 A1Stabilus GmbH
- Electric motor, drive assembly and electromechanical brake device18 May 2023US 2023/0155468 A1ZF Active Safety GmbH
- Permanent magnet rotor with enhanced demagnetization protection4 Apr 2019US 2019/0103795 A1Ford Global Technologies, LLC
- Starter for a thermal engine of a motor vehicle provided with a rotary electrical machine with an improved projecting pole inductor and corresponding pole shoe5 Jan 2017US 2017/0005541 A1Valeo Equipments Electriques Moteur
- Transverse flux motor as an external rotor motor and drive method1 Sep 2011US 2011/0210626 A1LEANTEC Motor GmbH
Most cited
By later US patents
- Permanent magnet brushless DC motor having reduced cogging92US 5,250,867 AGeneral Electric Company · 1993
- Rotary dynamo electric machine with protection against demagnetization of low flux portion of permanent magnet poles40US 4,471,252 ALucas Industries Limited · 1984
- Multiple magnetic pole DC motors22US 5,283,492 A1994
- Transverse flux motor as an external rotor motor and drive method21US 8,624,463 B2LEANTEC Motor GmbH · 2014
- Segmented magnet dynamoelectric machine with series connected rotor conductors10US 4,307,310 AWestinghouse Electric Corp. · 1981