H01H 3/3015
Using cam devices
Official title: {using cam devices}
H01H3/3015 (Using cam devices) appears on 101 US grants and 73 published applications in this corpus.
Search patents in H01H- Granted patents
- 101
- Published applications
- 73
- Assignees
- 51
- Inventors
- 243
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 1 |
| 2003 | 3 | 5 |
| 2004 | 4 | 3 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 2 | 7 |
| 2009 | 3 | 0 |
| 2010 | 1 | 1 |
| 2011 | 4 | 3 |
| 2012 | 0 | 3 |
| 2013 | 2 | 5 |
| 2014 | 3 | 6 |
| 2015 | 5 | 8 |
| 2016 | 7 | 3 |
| 2017 | 5 | 2 |
| 2018 | 2 | 5 |
| 2019 | 6 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 4 |
| 2023 | 2 | 1 |
| 2024 | 2 | 4 |
| 2025 | 3 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automatic drop-out and reset of a vacuum interrupter device in a cutout mounting21 Apr 2026US 12,609,257 B2S&C Electric Company
- Operating mechanism for circuit breakers16 Dec 2025US 12,500,052 B2Hitachi Energy Ltd
- High energy spring drive20 May 2025US 12,308,186 B2Hitachi Energy Ltd
- Balance spring assembly for disconnector1 Apr 2025US 12,266,486 B2Hitachi Energy Ltd
- Circuit breaker with manual energy-accumulating unit gears intitally separated from one another10 Sep 2024US 12,087,534 B2Ls Electric Co., Ltd.
- Energy harvester actuator4 Jun 2026US 2026/0155764 A1Methode Electronics UK Ltd.
- Operating mechanism and switching device3 Jul 2025US 2025/0218699 A1Chint Low Voltage Electrical Technology Co., Ltd.
- High energy spring drive19 Dec 2024US 2024/0420900 A1Hitachi Energy Ltd
- Actuation unit for a switching apparatus8 Aug 2024US 2024/0266123 A1ABB Schweiz AG
- Operating mechanism for circuit breakers2 May 2024US 2024/0145192 A1Hitachi Energy Ltd
Most cited
By later US patents
- Snap acting charge/discharge and open/closed indicators displaying states of electrical switching apparatus93US 5,973,278 AEaton Corporation · 1999
- Plug-in circuit breaker comprising an operating lever for opening and closing of poles44US 6,184,483 B2Schneider Electric SA · 2001
- Plug-in circuit breaker discharge and disengagement energy storage control device used during extraction of breaker40US 6,177,641 B1Schneider Electric SA · 2001
- Spring powered electrical switching apparatus with anti-rollover cam30US 6,437,269 B1Eaton Corporation · 2002
- Molded case electric power switches with cam driven, spring powered open and close mechanism28US 6,015,959 AEaton Corporation · 2000