H01R 39/40
Enabling brush movement within holder during current collection
Official title: enabling brush movement within holder during current collection
H01R39/40 (Enabling brush movement within holder during current collection) appears on 180 US grants and 99 published applications in this corpus.
Search patents in H01R- Granted patents
- 180
- Published applications
- 99
- Assignees
- 108
- Inventors
- 293
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 11 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 3 |
| 2004 | 2 | 5 |
| 2005 | 4 | 3 |
| 2006 | 4 | 3 |
| 2007 | 4 | 7 |
| 2008 | 3 | 5 |
| 2009 | 6 | 6 |
| 2010 | 6 | 5 |
| 2011 | 5 | 7 |
| 2012 | 4 | 5 |
| 2013 | 4 | 5 |
| 2014 | 0 | 5 |
| 2015 | 3 | 12 |
| 2016 | 11 | 4 |
| 2017 | 5 | 5 |
| 2018 | 7 | 4 |
| 2019 | 6 | 1 |
| 2020 | 2 | 4 |
| 2021 | 5 | 4 |
| 2022 | 1 | 3 |
| 2023 | 3 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Rotating brushes for electric motors1 Apr 2025US 12,266,987 B1
- Predictive brush control for separately excited electric motors2 Jul 2024US 12,027,806 B2Audi AG
- Motor and rotating device8 Aug 2023US 11,722,030 B2MINEBEA MITSUMI Inc.
- Motor and brush housing part30 May 2023US 11,664,701 B2Panasonic Intellectual Property Management Co., Ltd.
- Holding apparatus for a slip ring unit, slip ring bridge, slip ring unit, electric machine, and wind turbine30 May 2023US 11,664,709 B2Flender GmbH
- Discharge device for discharging electric currents, and machine comprising a discharge device of this kind11 Dec 2025US 2025/0379407 A1
- Rotating brushes for electric motors3 Apr 2025US 2025/0112529 A1
- Predictive brush control for separately excited electric motors29 Sep 2022US 2022/0311198 A1Audi AG
- Motor and rotating device7 Apr 2022US 2022/0109343 A1MINEBEA MITSUMI Inc.
- Motor and brush housing part13 Jan 2022US 2022/0014070 A1Panasonic Intellectual Property Management Co., Ltd.
Most cited
By later US patents
- 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
- Permanent magnet direct current motor49US 5,949,173 AGeneral Electric Company · 1999
- Brush assembly for dynamoelectric machines45US 4,366,404 ABBC Brown, Boveri & Company, Limited · 1982