H01R 39/38
Brush holders
H01R39/38 (Brush holders) appears on 684 US grants and 515 published applications in this corpus.
Search patents in H01R- Granted patents
- 684
- Published applications
- 515
- Assignees
- 306
- Inventors
- 1,275
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 16 | 0 |
| 1983 | 12 | 0 |
| 1984 | 2 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 12 | 0 |
| 1990 | 6 | 0 |
| 1991 | 13 | 0 |
| 1992 | 14 | 0 |
| 1993 | 12 | 0 |
| 1994 | 8 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 15 | 0 |
| 1998 | 18 | 0 |
| 1999 | 17 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 3 |
| 2002 | 9 | 15 |
| 2003 | 11 | 15 |
| 2004 | 19 | 22 |
| 2005 | 21 | 28 |
| 2006 | 18 | 21 |
| 2007 | 18 | 33 |
| 2008 | 18 | 32 |
| 2009 | 20 | 20 |
| 2010 | 24 | 18 |
| 2011 | 15 | 16 |
| 2012 | 9 | 12 |
| 2013 | 9 | 21 |
| 2014 | 9 | 16 |
| 2015 | 13 | 36 |
| 2016 | 25 | 23 |
| 2017 | 24 | 20 |
| 2018 | 24 | 25 |
| 2019 | 26 | 19 |
| 2020 | 16 | 17 |
| 2021 | 20 | 19 |
| 2022 | 22 | 22 |
| 2023 | 11 | 11 |
| 2024 | 17 | 21 |
| 2025 | 15 | 18 |
| 2026 | 8 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01R 39/381Characterised by the application of pressure to brush193
- H01R 39/40Enabling brush movement within holder during current collection180
- H01R 39/385Means for mechanical fixation of the brush holder138
- H01R 39/41Cartridge type106
- H01R 39/383Characterised by the electrical connection to the brush holder104
- H01R 39/39Wherein the brush is fixedly mounted in the holder97
- H01R 39/388Characterised by the material of the brush holder21
Recent patents
- Grounding brush and associated assembly1 Sep 2026US 12,726,071 B2Aktiebolaget Skf
- Electrical machine with a conductive sleeve11 Aug 2026US 12,706,511 B2Aktiebolaget Skf
- Grounding brush assembly with improved electrical conductivity properties14 Jul 2026US 12,683,346 B2Aktiebolaget Skf
- Grounding brush assembly23 Jun 2026US 12,665,366 B2Aktiebolaget Skf
- Bearing with anti-corrosion function16 Jun 2026US 12,655,873 B2Hyundai Mobis Co., Ltd.
- Brush holder and brush holder rigging including same24 Sep 2026US 2026/0291322 A1Doosan Enerbility Co., Ltd.
- Rolling brush for electric motor17 Sep 2026US 2026/0280210 A1Schaeffler Technologies AG & Co. KG
- Brush module for supplying current to a rotor of an electric drive machine of a motor vehicle17 Sep 2026US 2026/0280211 A1Schaeffler Technologies AG & Co. KG
- Holder for a helical brush and a grounding brush assembly17 Sep 2026US 2026/0280391 A1
- Holder for axial brush assembly10 Sep 2026US 2026/0269548 A1
Most cited
By later US patents
- Motor pack armature support with brush holder assembly153US 5,818,142 ABlack & Decker Inc. · 1998
- Brush holder apparatus, brush assembly, and method63US 7,034,430 B2Cutsforth Products, Inc. · 2006
- Brushholder apparatus for dynamoelectric machine56US 4,329,611 AGeneral Electric Company · 1982
- Brush holding device for electric rotary machine53US 4,355,254 AHitachi Chemical Company, Ltd. · 1982
- Brush holder for mechanically commutated electric motors52US 5,397,952 ARobert Bosch GmbH · 1995