H01H 3/3021
Using unidirectional coupling
Official title: {using unidirectional coupling}
H01H3/3021 (Using unidirectional coupling) appears on 59 US grants and 28 published applications in this corpus.
Search patents in H01H- Granted patents
- 59
- Published applications
- 28
- Assignees
- 32
- Inventors
- 123
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 3 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 0 | 4 |
| 2017 | 5 | 2 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 4 |
| 2021 | 5 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Balance spring assembly for disconnector1 Apr 2025US 12,266,486 B2Hitachi Energy Ltd
- Tensioning mechanism for clamping a pre-loaded spring of a spring-loaded accumulator drive24 May 2022US 11,342,136 B2Siemens Energy Global GmbH & Co. KG
- Charging mechanism for charging a stored-energy spring of a stored-energy spring mechanism28 Dec 2021US 11,211,206 B2Siemens Energy Global GmbH & Co. KG
- Motor device for a switch drive of an electric switch2 Nov 2021US 11,164,704 B2Siemens Energy Global GmbH & Co. KG
- Charging mechanism for charging a stored-energy spring of a stored-energy spring mechanism19 Oct 2021US 11,152,162 B2Siemens Aktiengesellschaft
- Balance spring assembly for disconnector18 May 2023US 2023/0154693 A1Hitachi Energy Switzerland AG
- Manual control device for a remotely operated source inverter12 Aug 2021US 2021/0249205 A1Socomec
- Charging mechanism for charging a stored-energy spring of a stored-energy spring mechanism15 Oct 2020US 2020/0328034 A1Siemens Aktiengesellschaft
- Charging mechanism for charging a stored-energy spring of a stored-energy spring mechanism15 Oct 2020US 2020/0328035 A1Siemens Aktiengesellschaft
- Tensioning mechanism for clamping a pre-loaded spring of a spring-loaded accumulator drive16 Jul 2020US 2020/0227213 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- 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 operator for a power circuit breaker27US 5,280,258 ASiemens Energy & Automation, Inc. · 1994
- Rotational backlash compensating cam for stored energy circuit breaker charging motor control26US 7,186,937 B1Eaton Corporation · 2007
- Circuit interrupter having improved operating mechanism25US 5,224,590 AWestinghouse Electric Corp. · 1993
- Ratcheting mechanism for circuit breaker motor operator24US 4,167,988 AGeneral Electric Company · 1979