H01H 71/12
Automatic release mechanisms with or without manual release
H01H71/12 (Automatic release mechanisms with or without manual release) appears on 2,162 US grants and 1,499 published applications in this corpus.
Search patents in H01H- Granted patents
- 2,162
- Published applications
- 1,499
- Assignees
- 486
- Inventors
- 3,226
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 25 | 0 |
| 1978 | 25 | 0 |
| 1979 | 18 | 0 |
| 1980 | 27 | 0 |
| 1981 | 20 | 0 |
| 1982 | 9 | 0 |
| 1983 | 13 | 0 |
| 1984 | 24 | 0 |
| 1985 | 28 | 0 |
| 1986 | 31 | 0 |
| 1987 | 42 | 0 |
| 1988 | 34 | 0 |
| 1989 | 33 | 0 |
| 1990 | 45 | 0 |
| 1991 | 19 | 0 |
| 1992 | 36 | 0 |
| 1993 | 31 | 0 |
| 1994 | 31 | 0 |
| 1995 | 28 | 0 |
| 1996 | 33 | 0 |
| 1997 | 28 | 0 |
| 1998 | 33 | 0 |
| 1999 | 54 | 0 |
| 2000 | 35 | 0 |
| 2001 | 64 | 8 |
| 2002 | 62 | 50 |
| 2003 | 45 | 39 |
| 2004 | 42 | 35 |
| 2005 | 40 | 39 |
| 2006 | 26 | 34 |
| 2007 | 19 | 31 |
| 2008 | 24 | 46 |
| 2009 | 39 | 77 |
| 2010 | 38 | 48 |
| 2011 | 48 | 48 |
| 2012 | 45 | 62 |
| 2013 | 56 | 56 |
| 2014 | 53 | 63 |
| 2015 | 53 | 91 |
| 2016 | 77 | 83 |
| 2017 | 90 | 79 |
| 2018 | 68 | 83 |
| 2019 | 95 | 91 |
| 2020 | 84 | 92 |
| 2021 | 80 | 57 |
| 2022 | 76 | 65 |
| 2023 | 72 | 68 |
| 2024 | 41 | 58 |
| 2025 | 55 | 52 |
| 2026 | 40 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 71/24Electromagnetic mechanisms667
- H01H 71/123Using a solid-state trip unit597
- H01H 71/14Electrothermal mechanisms407
- H01H 71/46Having means for operating auxiliary contacts additional to the main contacts323
- H01H 71/40Combined electrothermal and electromagnetic mechanisms172
- H01H 71/128Manual release or trip mechanisms164
- H01H 71/126Actuated by dismounting of circuit breaker or removal of part of circuit59
- H01H 71/122Actuated by blowing of a fuse42
All 12 subgroupsShow fewer
Recent patents
- Electrical protection devices comprising an integrated switching module6 Oct 2026US 12,755,918 B2Schneider Electric Industries SAS
- Compact recloser6 Oct 2026US 12,755,919 B2Hubbell Incorporated
- Bi-directional solid-state DC circuit breaker with breaking speed control15 Sep 2026US 12,738,436 B2Hong Kong Applied Science and Technology Research Institute Company Limited
- Active arc fault circuit interrupters with solid-state components15 Sep 2026US 12,738,437 B2Siemens Industry, Inc.
- Ground fault circuit interrupter device and related electrical connection devices and electrical appliances15 Sep 2026US 12,738,438 B2
- Circuit breaker and manufacturing method therefor8 Oct 2026US 2026/0311947 A1Delta Electronics (Jiangsu) Ltd.
- Energy storage structure and rotary isolation switch27 Aug 2026US 2026/0251128 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Compact recloser27 Aug 2026US 2026/0253827 A1
- Leakage protection device and electrical device27 Aug 2026US 2026/0253828 A1Sensata Technologies Changzhou Co., Ltd.
- Selectable shunt voltage for circuit breaker6 Aug 2026US 2026/0229872 A1Vertiv Corporation
Most cited
By later US patents
- Electronic circuit breaker with protection against sputtering arc faults and ground faults252US 5,224,006 AWestinghouse Electric Corp. · 1993
- Circuit breaker panel241US 8,681,463 B2Edison Global Circuits, LLC · 2014
- Circuit breaker housing and attachment box124US 4,622,444 AFuji Electric Co., Ltd. · 1986
- Molded case circuit breaker auxiliary switch unit120US 4,831,221 AGeneral Electric Company · 1989
- Instantaneous trip device of a circuit breaker119US 5,103,198 AMerlin Gerin · 1992