H01H 51/01
Relays in which the armature is maintained in one position by a
Official title: Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field {(H01H51/02 - H01H51/26 take precedence)}
H01H51/01 (Relays in which the armature is maintained in one position by a) appears on 66 US grants and 65 published applications in this corpus.
Search patents in H01H- Granted patents
- 66
- Published applications
- 65
- Assignees
- 54
- Inventors
- 157
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 4 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 4 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 4 |
| 2015 | 4 | 8 |
| 2016 | 2 | 5 |
| 2017 | 6 | 4 |
| 2018 | 4 | 2 |
| 2019 | 5 | 5 |
| 2020 | 1 | 3 |
| 2021 | 3 | 3 |
| 2022 | 6 | 9 |
| 2023 | 8 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic latching relay with microswitch8 Sep 2026US 12,731,746 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Relay30 Jun 2026US 12,671,047 B2Huawei Technologies Co., Ltd.
- Trip and reset mechanism for leakage current detection and interruption device24 Jun 2025US 12,340,963 B2
- ARC path forming unit and direct current relay including same13 Aug 2024US 12,062,509 B2Ls Electric Co., Ltd.
- Arc path forming unit and direct current relay comprising same7 May 2024US 11,978,604 B2Ls Electric Co., Ltd.
- Arc path formation unit and direct current relay comprising same6 Aug 2026US 2026/0229435 A1Ls E-Mobility Solutions Co., Ltd.
- High voltage relay with voltage sampling30 Jul 2026US 2026/0221362 A1Fca US LLC
- Relay9 Jul 2026US 2026/0196432 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
- Actuator for a Circuit Breaker in a Switchgear15 Jan 2026US 2026/0018359 A1ABB Schweiz AG
- Magnetic latching relay having microswitch18 Apr 2024US 2024/0128037 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
Most cited
By later US patents
- Maglatch mechanism for use in lighting control pod40US 7,595,710 B2Siemens Energy & Automation, Inc. · 2009
- Resettable switching device35US 6,975,191 B2Tripco Limited · 2005
- Solenoid operated switching device30US 5,227,750 APED Limited · 1993
- Method and system for bypassing a power cell of a power supply27US 8,093,764 B2Siemens Industry, Inc. · 2012
- Bistable switching arrangement21US 5,703,554 AEH-Schrack Components Aktiengesellschaft · 1997