H02K 27/00
Ac commutator motors or generators having mechanical commutator
Official title: AC commutator motors or generators having mechanical commutator
H02K27/00 (Ac commutator motors or generators having mechanical commutator) appears on 32 US grants and 26 published applications in this corpus.
Search patents in H02K- Granted patents
- 32
- Published applications
- 26
- Assignees
- 28
- Inventors
- 69
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 3 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 3 |
| 2019 | 1 | 0 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02K 27/04Ac commutator motors or generators having mechanical commutator: having single-phase operation in4
- H02K 27/02Ac commutator motors or generators having mechanical commutator: characterised by the armature3
- H02K 27/20Structural association with a speed regulating device3
- H02K 27/12Ac commutator motors or generators having mechanical commutator: having multi-phase operation2
- H02K 27/22Ac commutator motors or generators having mechanical commutator: having means for improving1
- H02K 27/28Structural association with auxiliary electric devices influencing the characteristic of the machine1
- H02K 27/24Ac commutator motors or generators having mechanical commutator: having two or more0
- H02K 27/26Ac commutator motors or generators having mechanical commutator: having disc armature0
All 9 subgroupsShow fewer
Recent patents
- Motor with bidirectional terminals29 Apr 2025US 12,289,024 B2Keyang Electric Machinery Co., Ltd.
- Tri-motor15 Oct 2024US 12,119,720 B2Pure Energy Corporation
- Electric drive unit for driving a vehicle4 Jul 2023US 11,695,314 B2Toyota Jidosha Kabushiki Kaisha
- Motor assembly and electrical device comprising the same3 Aug 2021US 11,081,982 B2Zhongshan Broad-Ocean Motor Co., Ltd.
- Power tool having first elastic member and second elastic member accommodated in first gear7 Jul 2020US 10,702,932 B2Koki Holdings Co., Ltd.
- Winding switching system, vehicle motor drive system, control device, control method, and computer program30 Jul 2026US 2026/0221921 A1Autonetworks Technologies, Ltd.
- Electric motor with electrical generation capacity18 Sep 2025US 2025/0293576 A1
- Motor with Bidirectional Terminals29 Jun 2023US 2023/0208265 A1Keyang Electric Machinery Co., Ltd.
- Tri-motor23 Mar 2023US 2023/0089844 A1Pure Energy Corporation
- Electric drive unit20 Jan 2022US 2022/0021287 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Electric machine with a transformer having a rotating component117US 5,519,275 AColeman Powermate, Inc. · 1996
- Engine-driven permanent magnetic type welding generator41US 5,796,190 ADenyo Kabushiki Kaisha · 1998
- Auxiliary power unit for a hybrid electrical vehicle30US 5,469,820 AOnan Corporation · 1995
- Auxiliary power unit for hybrid electric vehicle30US 5,619,956 AOnan Corporation · 1997
- Electrical generators and motors in which at steady-state the rotor and its electromagnetic field rotate at selectively different angular speeds29US 6,047,104 ACheng Technology & Services, Inc. · 2000