H02K 13/00
Structural associations of current collectors with motors or generators
Official title: Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings (supporting or protecting brushes or brush holders in motor casings or enclosures H02K5/14); Disposition of current collectors in motors or generators; Arrangements for improving commutation
H02K13/00 (Structural associations of current collectors with motors or generators) appears on 943 US grants and 850 published applications in this corpus.
Search patents in H02K- Granted patents
- 943
- Published applications
- 850
- Assignees
- 389
- Inventors
- 1,990
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 16 | 0 |
| 1984 | 8 | 0 |
| 1985 | 7 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 16 | 0 |
| 1990 | 7 | 0 |
| 1991 | 12 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 13 | 0 |
| 1996 | 14 | 0 |
| 1997 | 16 | 0 |
| 1998 | 23 | 0 |
| 1999 | 14 | 0 |
| 2000 | 17 | 0 |
| 2001 | 19 | 10 |
| 2002 | 16 | 32 |
| 2003 | 20 | 30 |
| 2004 | 27 | 28 |
| 2005 | 23 | 22 |
| 2006 | 19 | 24 |
| 2007 | 22 | 32 |
| 2008 | 11 | 18 |
| 2009 | 16 | 20 |
| 2010 | 21 | 20 |
| 2011 | 11 | 26 |
| 2012 | 15 | 19 |
| 2013 | 16 | 50 |
| 2014 | 19 | 33 |
| 2015 | 29 | 68 |
| 2016 | 28 | 38 |
| 2017 | 48 | 55 |
| 2018 | 47 | 60 |
| 2019 | 42 | 36 |
| 2020 | 54 | 31 |
| 2021 | 39 | 40 |
| 2022 | 35 | 43 |
| 2023 | 26 | 28 |
| 2024 | 33 | 22 |
| 2025 | 23 | 40 |
| 2026 | 15 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02K 13/003Structural associations of slip-rings242
- H02K 13/006Structural associations of commutators240
- H02K 13/04Connections between commutator segments and windings229
- H02K 13/10Arrangements of brushes or commutators specially adapted for improving commutation229
- H02K 13/02Connections between slip-rings and windings96
- H02K 13/14Circuit arrangements for improvement of commutation26
- H02K 13/12Arrangements for producing an axial reciprocation of the rotor and its associated9
Recent patents
- Grounding brush assembly8 Sep 2026US 12,732,071 B2Aktiebolaget Skf
- Systems and methods for rotor shaft grounding11 Aug 2026US 12,706,512 B2Ford Global Technologies, LLC
- Slip ring device for motor28 Jul 2026US 12,695,364 B2Hyundai Mobis Co., Ltd.
- Rotor comprising a two-part bearing seat30 Jun 2026US 12,671,281 B2Bayerische Motoren Werke Aktiengesellschaft
- Contact structure and brush motor16 Jun 2026US 12,658,772 B2Mabuchi Motor Co., Ltd.
- Actuator assembly with through-bore ring contacts and related technology1 Oct 2026US 2026/0302900 A1
- Drive axle for an electric vehicle24 Sep 2026US 2026/0291338 A1ZF Friedrichshafen AG
- Rotor Having a DC-To-DC Converter for an Electric Machine24 Sep 2026US 2026/0291344 A1Bayerische Motoren Werke Aktiengesellschaft
- Electric machine having a printed circuit board arranged in a stator housing24 Sep 2026US 2026/0291348 A1Robert Bosch GmbH
- Rolling brush for electric motor17 Sep 2026US 2026/0280210 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Method of manufacturing rare earth permanent magnet rotor99US 3,979,821 AKollmorgen Corporation · 1976
- Direct drive wind turbine70US 7,075,192 B2Northern Power Systems, Inc. · 2006
- Optimized modular electrical machine using permanent magnets65US 7,375,449 B22008
- Brush holder apparatus, brush assembly, and method63US 7,034,430 B2Cutsforth Products, Inc. · 2006
- Angle grinder61US 7,537,065 B2Black & Decker Inc. · 2009