H01H 9/223
Defeatable locking means
Official title: {Defeatable locking means}
H01H9/223 (Defeatable locking means) appears on 54 US grants and 44 published applications in this corpus.
Search patents in H01H- Granted patents
- 54
- Published applications
- 44
- Assignees
- 43
- Inventors
- 128
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 4 | 2 |
| 2009 | 0 | 3 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 2 | 1 |
| 2013 | 1 | 4 |
| 2014 | 0 | 4 |
| 2015 | 2 | 4 |
| 2016 | 6 | 4 |
| 2017 | 5 | 5 |
| 2018 | 5 | 1 |
| 2019 | 3 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 3 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Interlocking mechanism for a switching device21 Oct 2025US 12,451,301 B2Eaton Intelligent Power Limited
- Rotary lockout tagout latch system4 Mar 2025US 12,243,704 B2Rockwell Automation Technologies, Inc.
- Removable lawn mower PTO switch cover26 Mar 2024US 11,942,301 B2Jendyk Manufacturing, Inc.
- Industrial cut-off switch for visual identification of power system cut-off status19 Sep 2023US 11,764,021 B2Hyundai Tech Co., Ltd.
- Circuit breaker housing27 Dec 2022US 11,538,649 B2Ellenberger & Poensgen GmbH
- Rotary lockout tagout latch system31 Aug 2023US 2023/0274895 A1Rockwell Automation Technologies, Inc.
- Operation apparatus for rotary switch and rotary switch24 Aug 2023US 2023/0268148 A1Huawei Digital Power Technologies Co., Ltd.
- Interlocking mechanism for a switching device4 May 2023US 2023/0133635 A1Eaton Intelligent Power Limited
- Industrial cut-off switch for visual identification of power system cut-off status28 Jul 2022US 2022/0238291 A1Hyundai Tech Co., Ltd.
- Removable lawn mower pto switch cover26 Aug 2021US 2021/0262256 A1Jendyk Manufacturing, Inc.
Most cited
By later US patents
- Fusible switch48US 5,322,982 ASquare D Company · 1994
- Handle assembly with defeater and related methods46US 9,859,069 B2Rockwell Automation Technologies, Inc. · 2018
- Door interlock for rotary actuated circuit breaker45US 7,420,133 B2Welding Technology Corporation · 2008
- Interlock device33US 5,609,244 AReitech Corporation · 1997
- Motor control center interlock assembly33US 6,284,989 B1General Electric Company · 2001