H01H 9/20
Interlocking, locking, or latching mechanisms
H01H9/20 (Interlocking, locking, or latching mechanisms) appears on 1,502 US grants and 1,133 published applications in this corpus.
Search patents in H01H- Granted patents
- 1,502
- Published applications
- 1,133
- Assignees
- 570
- Inventors
- 2,639
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 10 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 12 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 14 | 0 |
| 1989 | 11 | 0 |
| 1990 | 13 | 0 |
| 1991 | 18 | 0 |
| 1992 | 14 | 0 |
| 1993 | 27 | 0 |
| 1994 | 19 | 0 |
| 1995 | 21 | 0 |
| 1996 | 22 | 0 |
| 1997 | 21 | 0 |
| 1998 | 42 | 0 |
| 1999 | 35 | 0 |
| 2000 | 21 | 0 |
| 2001 | 23 | 4 |
| 2002 | 26 | 14 |
| 2003 | 23 | 19 |
| 2004 | 25 | 16 |
| 2005 | 22 | 13 |
| 2006 | 22 | 23 |
| 2007 | 16 | 27 |
| 2008 | 34 | 35 |
| 2009 | 20 | 27 |
| 2010 | 18 | 26 |
| 2011 | 24 | 35 |
| 2012 | 31 | 37 |
| 2013 | 43 | 88 |
| 2014 | 54 | 75 |
| 2015 | 82 | 83 |
| 2016 | 73 | 80 |
| 2017 | 76 | 76 |
| 2018 | 81 | 62 |
| 2019 | 86 | 62 |
| 2020 | 53 | 63 |
| 2021 | 63 | 58 |
| 2022 | 51 | 47 |
| 2023 | 55 | 53 |
| 2024 | 48 | 36 |
| 2025 | 36 | 44 |
| 2026 | 26 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 9/28For locking switch parts by a key or equivalent removable member583
- H01H 9/22For interlocking between casing, cover, or protective shutter and mechanism for operating410
- H01H 9/26For interlocking two or more switches388
- H01H 9/24For interlocking two or more parts of the mechanism for operating contacts83
Recent patents
- Wireless control of auxiliary equipment25 Aug 2026US 12,715,100 B2Husqvarna AB
- Retrofit remote control devices18 Aug 2026US 12,712,137 B2Lutron Technology Company LLC
- Electronic device and security device11 Aug 2026US 12,707,574 B2Qisda Corporation
- Handle lock device of circuit breaker21 Jul 2026US 12,688,982 B2Fuji Electric Fa Components & Systems Co., Ltd.
- Device for locking an assembly, and system for locking different assemblies14 Jul 2026US 12,683,096 B2Siemens Aktiengesellschaft
- Directional switch interlock for a power tool1 Oct 2026US 2026/0295802 A1
- Breaker Lockout with Pivoting Clamping Surface17 Sep 2026US 2026/0279696 A1Tradebase Holdings LC
- Battery pack and pack case, and vehicle including the same17 Sep 2026US 2026/0279697 A1LG Energy Solution, Ltd.
- Circuit breaker operation safety lockout device10 Sep 2026US 2026/0269148 A1
- Locking device for a rocker-type light switch13 Aug 2026US 2026/0237573 A1Toggle Shield LLC
Most cited
By later US patents
- Lockout disabling mechanism1,030US 10,194,976 B2Ethicon, Inc. · 2019
- Adapter assemblies for interconnecting surgical loading units and handle assemblies848US 10,163,589 B2Covidien LP · 2018
- Flexible hinge and removable attachment186US 8,498,100 B1Microsoft Corporation · 2013
- Rocker switch with selective lockout means shiftable transversely of the pivotal axis159US 4,187,420 AEaton Corporation · 1980
- Switch cover and control for controllable lamp153US 9,208,965 B2Centralite Systems, Inc. · 2015