H01H 3/56
Using electromagnetic clutch
Official title: using electromagnetic clutch
H01H3/56 (Using electromagnetic clutch) appears on 17 US grants and 8 published applications in this corpus.
Search patents in H01H- Granted patents
- 17
- Published applications
- 8
- Assignees
- 13
- Inventors
- 33
- Latest grant
- 21 Apr 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Latching relay and method thereof21 Apr 2020US 10,629,389 B2
- Actuator override mechanism for subsea circuit breaker14 May 2019US 10,290,453 B2ABB Schweiz AG
- Electric switching device for an energy accumulator in an electric vehicle18 Sep 2018US 10,079,129 B2LION Smart GmbH
- Motorized vacuum circuit breaker assembly12 Jun 2018US 9,997,311 B2General Electric Company
- Dual stroke mechanically latched mechanism21 Mar 2017US 9,601,292 B2Hubbell Incorporated
- Latching relay and method thereof23 May 2019US 2019/0157018 A1
- Electric switching device for an energy accumulator in an electric vehicle25 May 2017US 2017/0148597 A1LION Smart GmbH
- Actuator Override Mechanism For Subsea Circuit Breaker8 Dec 2016US 2016/0358735 A1ABB Schweiz AG
- Vacuum circuit breaker assembly21 Jul 2016US 2016/0211096 A1General Electric Company
- Dual stroke mechanically latched mechanism2 Jun 2016US 2016/0155593 A1Hubbell Incorporated
Most cited
By later US patents
- Permanent magnet latch for speed switching device13US 4,100,382 ACanadian General Electric Company Limited · 1978
- Plugging defeat system for electric motors10US 4,499,409 AClark Equipment Company · 1985
- Very high speed circuit breaker assisted by semiconductors9US 4,956,738 AACEC, Ateliers de Constructions Electriques de Charleroi · 1990
- Circuit breaker3US 5,485,133 ATripco Limited · 1996
- Motor operator system for a power switch with travel set with three positions for ground or double-throw type switch3US 8,988,020 B1Cleaveland/Price Inc. · 2015