H01H 3/3031
Means for locking the spring in a charged state
Official title: {Means for locking the spring in a charged state}
H01H3/3031 (Means for locking the spring in a charged state) appears on 102 US grants and 71 published applications in this corpus.
Search patents in H01H- Granted patents
- 102
- Published applications
- 71
- Assignees
- 49
- Inventors
- 225
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 2 |
| 2004 | 2 | 3 |
| 2005 | 1 | 2 |
| 2006 | 4 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 3 |
| 2009 | 0 | 2 |
| 2010 | 3 | 3 |
| 2011 | 3 | 3 |
| 2012 | 3 | 4 |
| 2013 | 3 | 5 |
| 2014 | 5 | 2 |
| 2015 | 1 | 8 |
| 2016 | 7 | 3 |
| 2017 | 5 | 0 |
| 2018 | 1 | 3 |
| 2019 | 2 | 1 |
| 2020 | 3 | 7 |
| 2021 | 4 | 1 |
| 2022 | 3 | 5 |
| 2023 | 1 | 2 |
| 2024 | 4 | 3 |
| 2025 | 2 | 5 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Circuit breaker and operating mechanism thereof14 Apr 2026US 12,603,241 B2Chint Low Voltage Electrical Technology Co., Ltd.
- Opening switch and remote circuit breaker11 Nov 2025US 12,469,654 B2Huawei Digital Power Technologies Co., Ltd.
- High energy spring drive20 May 2025US 12,308,186 B2Hitachi Energy Ltd
- Interlock mechanism for a distribution cabinet25 Jun 2024US 12,020,889 B2Eaton Intelligent Power Limited
- Short-circuiting device, converter and short-circuiting method21 May 2024US 11,990,296 B2Innomotics GmbH
- Energy storage structure and rotary isolation switch27 Aug 2026US 2026/0251128 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Electrical contactor comprising a spring for rapidly driving contacts18 Jun 2026US 2026/0171339 A1Safran Electrical & Power
- Remotely-controlled rotary disconnecting switch28 Aug 2025US 2025/0273414 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Automatic opening mechanism7 Aug 2025US 2025/0253113 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Operating mechanism and isolating switch19 Jun 2025US 2025/0201495 A1Chint Low Voltage Electrical Technology Co., Ltd.
Most cited
By later US patents
- Remote controlled circuit breaker with recharging cam104US 5,504,290 AMerlin Gerin · 1996
- Modular accessory mechanical lock-out mechanism36US 5,655,648 AGeneral Electric Company · 1997
- Shorting switch and system to eliminate arcing faults in power distribution equipment36US 6,657,150 B1Eaton Corporation · 2003
- Close prop and latch assembly for stored energy operating mechanism of electrical switching apparatus33US 5,931,290 AEaton Corporation · 1999
- Pretensioner for vehicle seat belt systems28US 5,207,618 ATakata Corporation · 1993