H02K 5/14
Means for supporting or protecting brushes or brush holders
H02K5/14 (Means for supporting or protecting brushes or brush holders) appears on 1,202 US grants and 848 published applications in this corpus.
Search patents in H02K- Granted patents
- 1,202
- Published applications
- 848
- Assignees
- 396
- Inventors
- 2,162
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 15 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 19 | 0 |
| 1983 | 16 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 14 | 0 |
| 1987 | 22 | 0 |
| 1988 | 18 | 0 |
| 1989 | 22 | 0 |
| 1990 | 18 | 0 |
| 1991 | 20 | 0 |
| 1992 | 20 | 0 |
| 1993 | 22 | 0 |
| 1994 | 19 | 0 |
| 1995 | 17 | 0 |
| 1996 | 21 | 0 |
| 1997 | 28 | 0 |
| 1998 | 28 | 0 |
| 1999 | 32 | 0 |
| 2000 | 28 | 0 |
| 2001 | 33 | 14 |
| 2002 | 36 | 45 |
| 2003 | 35 | 39 |
| 2004 | 50 | 55 |
| 2005 | 55 | 45 |
| 2006 | 29 | 38 |
| 2007 | 25 | 34 |
| 2008 | 26 | 50 |
| 2009 | 31 | 34 |
| 2010 | 35 | 31 |
| 2011 | 28 | 33 |
| 2012 | 21 | 27 |
| 2013 | 24 | 29 |
| 2014 | 23 | 31 |
| 2015 | 21 | 50 |
| 2016 | 25 | 35 |
| 2017 | 37 | 40 |
| 2018 | 30 | 37 |
| 2019 | 41 | 37 |
| 2020 | 38 | 31 |
| 2021 | 32 | 29 |
| 2022 | 31 | 27 |
| 2023 | 24 | 17 |
| 2024 | 21 | 16 |
| 2025 | 19 | 13 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Alternator system6 Oct 2026US 12,756,259 B2
- Grounding brush and associated assembly1 Sep 2026US 12,726,071 B2Aktiebolaget Skf
- Anti-erosion structure having ground structure with brushes into the shaft23 Jun 2026US 12,665,475 B2Hyundai Mobis Co., Ltd.
- Axial brush assembly for electric machine28 Apr 2026US 12,614,947 B2GM Global Technology Operations LLC
- Fixing structure of choke coil and motor24 Feb 2026US 12,562,627 B2Mabuchi Motor Co., Ltd.
- Brush adjuster for external excitation of a rotor, which is arranged on a rotor shaft, of an electric motor, arrangement of a rotor shaft of an electric motor and a wet-running, electromagnetically actuable brush adjuster, electric motor, vehicle and method for operating an electric motorvehicle and method for operating an electric motor1 Oct 2026US 2026/0302868 A1Schaeffler Technologies AG & Co. KG
- Brush holder and brush holder rigging including same24 Sep 2026US 2026/0291321 A1Doosan Enerbility Co., Ltd.
- Brush holder and brush holder rigging including same24 Sep 2026US 2026/0291322 A1Doosan Enerbility Co., Ltd.
- Electric drive system with brush polarity flip control20 Aug 2026US 2026/0246407 A1GM Global Technology Operations LLC
- Axial slip ring assembly for an electric motor13 Aug 2026US 2026/0238095 A1GM Global Technology Operations LLC
Most cited
By later US patents
- Motor pack armature support with brush holder assembly153US 5,818,142 ABlack & Decker Inc. · 1998
- Motor brush assembly94US 4,673,837 AAMP Incorporated · 1987
- Brush holder apparatus, brush assembly, and method63US 7,034,430 B2Cutsforth Products, Inc. · 2006
- Angle grinder61US 7,537,065 B2Black & Decker Inc. · 2009
- Brush holding apparatus for rotary electric machine56US 4,296,346 AHitachi Chemical Company, Ltd. · 1981