H01H 50/18
Movable parts of magnetic circuits
Official title: Movable parts of magnetic circuits, e.g. armature
H01H50/18 (Movable parts of magnetic circuits) appears on 1,065 US grants and 897 published applications in this corpus.
Search patents in H01H- Granted patents
- 1,065
- Published applications
- 897
- Assignees
- 384
- Inventors
- 1,735
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 13 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 11 | 0 |
| 1982 | 11 | 0 |
| 1983 | 5 | 0 |
| 1984 | 14 | 0 |
| 1985 | 20 | 0 |
| 1986 | 11 | 0 |
| 1987 | 20 | 0 |
| 1988 | 12 | 0 |
| 1989 | 13 | 0 |
| 1990 | 12 | 0 |
| 1991 | 17 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 10 | 0 |
| 1998 | 12 | 0 |
| 1999 | 21 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 3 |
| 2002 | 14 | 10 |
| 2003 | 7 | 10 |
| 2004 | 16 | 11 |
| 2005 | 10 | 13 |
| 2006 | 6 | 15 |
| 2007 | 11 | 8 |
| 2008 | 5 | 14 |
| 2009 | 11 | 19 |
| 2010 | 9 | 17 |
| 2011 | 18 | 10 |
| 2012 | 22 | 36 |
| 2013 | 34 | 38 |
| 2014 | 19 | 28 |
| 2015 | 34 | 68 |
| 2016 | 52 | 65 |
| 2017 | 51 | 45 |
| 2018 | 43 | 48 |
| 2019 | 41 | 58 |
| 2020 | 50 | 62 |
| 2021 | 54 | 65 |
| 2022 | 72 | 61 |
| 2023 | 46 | 60 |
| 2024 | 58 | 56 |
| 2025 | 48 | 46 |
| 2026 | 28 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 50/24Parts rotatable or rockable outside coil294
- H01H 50/20Movable inside coil and substantially lengthwise with respect to axis thereof239
- H01H 50/32Latching movable parts mechanically199
- H01H 50/30Mechanical arrangements for preventing or damping vibration or shock188
- H01H 50/34Means for adjusting limits of movement72
Recent patents
- Electromagnetic relay15 Sep 2026US 12,738,435 B2Excel Cell Electronic Co., Ltd.
- Relay8 Sep 2026US 12,731,745 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Magnetic latching relay with microswitch8 Sep 2026US 12,731,746 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Motion mechanism and corresponding contactor1 Sep 2026US 12,725,748 B2Schneider Electric Industries SAS
- Relay and battery system including the same25 Aug 2026US 12,719,003 B2LG Energy Solution, Ltd.
- Relay8 Oct 2026US 2026/0311945 A1Sensata Technologies (Wuhu) Co., Ltd.
- Electromagnetic contactor having structure for improving operation performance8 Oct 2026US 2026/0311946 A1Ls E-Mobility Solutions Co., Ltd.
- Contactor1 Oct 2026US 2026/0302114 A1Schneider Electric Industries SAS
- Relay1 Oct 2026US 2026/0302116 A1Sensata Technologies (Wuhu) Co., Ltd.
- Switching device17 Sep 2026US 2026/0279713 A1
Most cited
By later US patents
- Electromagnetic contactor with energy balanced closing system101US 4,893,102 AWestinghouse Electric Corp. · 1990
- Solenoid actuator having a magnetic flux sensor87US 5,032,812 AAutomatic Switch Company · 1991
- Electromagnetic switching apparatus68US 6,911,884 B2Matsushita Electric Works, Ltd. · 2005
- Recloser means for reclosing interrupted high voltage electric circuit means66US 5,175,403 ACooper Power Systems, Inc. · 1992
- Contact device63US 8,138,872 B2OMRON Corporation · 2012