H01H 3/301
Using a fluid actuator
Official title: {using a fluid actuator}
H01H3/301 (Using a fluid actuator) appears on 12 US grants and 8 published applications in this corpus.
Search patents in H01H- Granted patents
- 12
- Published applications
- 8
- Assignees
- 10
- Inventors
- 18
- Latest grant
- 29 Mar 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 3 | 0 |
| 2018 | 0 | 3 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Accumulator module for hydromechanical spring-loaded drive29 Mar 2022US 11,286,959 B2Hitachi Energy Switzerland AG
- System and method for air motor recharging of spring mechanisms2 Jul 2019US 10,340,096 B2Mitsubishi Electric Power Products, Inc.
- Bolted pressure switch motor arrangement11 Jun 2019US 10,319,544 B2Eaton Intelligent Power Limited
- Working cylinder for a drive of an electric circuit breaker5 Dec 2017US 9,837,222 B2ABB Schweiz AG
- Electrical switching device, which switches stroke-dependently, with extended switching hysteresis11 Jul 2017US 9,704,660 B2ABB Schweiz AG
- Accumulator Module for Hydromechanical Spring-Loaded Drive27 Dec 2018US 2018/0372125 A1ABB Schweiz AG
- Bolted pressure switch motor arrangement20 Dec 2018US 2018/0366287 A1Eaton Corporation
- System and method for air motor recharging of spring mechanisms22 Nov 2018US 2018/0337006 A1Mitsubishi Electric Power Products, Inc.
- Electrical switching device, which switches stroke-dependently, with extended switching hysteresis6 Aug 2015US 2015/0221455 A1ABB Technology AG
- Working cylinder for a drive of an electric circuit breaker26 Mar 2015US 2015/0083563 A1ABB Technology AG
Most cited
By later US patents
- Stored-spring-energy actuator mechanism for a high-voltage circuit breaker19US 5,113,056 ASprecher Energie AG · 1992
- Actuator mechanism for a high-voltage circuit breaker10US 4,968,861 ASprecher Energie AG · 1990
- Multi-pole high-voltage circuit-interrupter having independent pole tripping with a single common operating mechanism4US 4,123,635 AWestinghouse Electric Corp. · 1978
- Operating apparatus for circuit breaker3US 3,943,777 AHitachi, Ltd. · 1976
- Bolted pressure switch motor arrangement1US 10,319,544 B2Eaton Intelligent Power Limited · 2019