H01H 31/04
Interlocking mechanisms
H01H31/04 (Interlocking mechanisms) appears on 45 US grants and 41 published applications in this corpus.
Search patents in H01H- Granted patents
- 45
- Published applications
- 41
- Assignees
- 36
- Inventors
- 116
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 5 |
| 2015 | 4 | 2 |
| 2016 | 2 | 4 |
| 2017 | 4 | 4 |
| 2018 | 5 | 3 |
| 2019 | 3 | 0 |
| 2020 | 4 | 3 |
| 2021 | 2 | 2 |
| 2022 | 2 | 3 |
| 2023 | 3 | 4 |
| 2024 | 2 | 4 |
| 2025 | 3 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wildlife guard for cutout fuse holder10 Mar 2026US 12,568,955 B2Central Moloney, Inc.
- Air circuit breaker23 Sep 2025US 12,424,399 B2Ls Electric Co., Ltd.
- Insulated earthing switch for an air insulated or mixed switchgear9 Sep 2025US 12,413,053 B2GE Vernova Infrastructure Technology LLC
- Apparatus and method for use in a power delivery system1 Apr 2025US 12,266,916 B2Hawker Siddeley Switchgear Limited
- Arc extinguishing unit and air circuit breaker comprising same19 Nov 2024US 12,148,584 B2Ls Electric Co., Ltd.
- Manual operation assembly14 May 2026US 2026/0135048 A1
- Mechanical fuse device for protecting switching apparatus30 Apr 2026US 2026/0117826 A1Hitachi Energy Ltd
- Wildlife Guard for Cutout Fuse Holder28 Aug 2025US 2025/0268244 A1Central Moloney, Inc.
- Circuit breaker having in-out interlock device15 May 2025US 2025/0157757 A1Ls Electric Co., Ltd.
- Air circuit breaker6 Jun 2024US 2024/0186082 A1Ls Electric Co., Ltd.
Most cited
By later US patents
- Locking arrangement for disconnect switch13US 5,268,543 AS&C Electric Company · 1993
- Electrical safety apparatus11US 5,451,730 A1995
- Manually operable circuit breaker8US 5,168,137 ASiemmens Aktiengesellschaft · 1992
- Air insulated grounding switch3US 10,784,063 B1EMA Electromechanics, LLC · 2020
- Visible disconnect switch interlock assembly3US 9,490,084 B2Eaton Corporation · 2016