H01H 9/26
For interlocking two or more switches
Official title: for interlocking two or more switches ({H01H13/568 takes precedence;} by a detachable member H01H9/28 {; for electromagnetic relays H01H50/323})
H01H9/26 (For interlocking two or more switches) appears on 388 US grants and 294 published applications in this corpus.
Search patents in H01H- Granted patents
- 388
- Published applications
- 294
- Assignees
- 164
- Inventors
- 693
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 1 |
| 2002 | 6 | 3 |
| 2003 | 8 | 3 |
| 2004 | 6 | 3 |
| 2005 | 5 | 2 |
| 2006 | 7 | 3 |
| 2007 | 5 | 8 |
| 2008 | 10 | 9 |
| 2009 | 4 | 4 |
| 2010 | 6 | 11 |
| 2011 | 7 | 10 |
| 2012 | 10 | 9 |
| 2013 | 18 | 38 |
| 2014 | 21 | 22 |
| 2015 | 22 | 21 |
| 2016 | 21 | 20 |
| 2017 | 24 | 21 |
| 2018 | 20 | 18 |
| 2019 | 22 | 14 |
| 2020 | 19 | 16 |
| 2021 | 10 | 5 |
| 2022 | 11 | 12 |
| 2023 | 6 | 6 |
| 2024 | 11 | 13 |
| 2025 | 5 | 14 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transfer apparatus for dual-power transfer switch16 Jun 2026US 12,658,381 B2ABB AB
- Solid-state circuit breaker5 May 2026US 12,620,543 B2Schneider Electric (China) Co., Ltd.
- Connector for a circuit breaker and a downstream contactor, feeder with such a connector and arrangement with such a feeder17 Mar 2026US 12,580,139 B2Siemens Aktiengesellschaft
- Semiconductor-based DC transfer switch10 Mar 2026US 12,573,567 B2Siemens Industry, Inc.
- Electric power disconnect switch with integrated bypass switch17 Feb 2026US 12,555,723 B2Southern States, LLC
- Multi-switch connector for connecting multiple breaker switches6 Aug 2026US 2026/0229420 A1Schneider Electric USA, Inc.
- Semiconductor-based dc transfer switch25 Jun 2026US 2026/0179860 A1Siemens Industry, Inc.
- Operating mechanism for electric switch assembly, and electric switch assembly comprising the same28 May 2026US 2026/0148906 A1
- Interlock accessory for electrical vehicle (ev) application28 May 2026US 2026/0149243 A1Siemens Industry, Inc.
- Interlock module, circuit breaker movement unit and switchboard comprising same30 Apr 2026US 2026/0121387 A1Ls Electric Co., Ltd.
Most cited
By later US patents
- Flexible hinge and removable attachment186US 8,498,100 B1Microsoft Corporation · 2013
- Ultra high-speed circuit breaker with galvanic isolation102US 5,132,865 AMerlin Gerin · 1992
- Flexible hinge support layer98US 8,724,302 B2Microsoft Corporation · 2014
- Flexible hinge and removable attachment93US 8,780,541 B2Microsoft Corporation · 2014
- Flexible hinge and removable attachment92US 8,570,725 B2Microsoft Corporation · 2013