H01H 33/6647
Having fixed middle contact and two movable contacts
Official title: {having fixed middle contact and two movable contacts}
H01H33/6647 (Having fixed middle contact and two movable contacts) appears on 21 US grants and 16 published applications in this corpus.
Search patents in H01H- Granted patents
- 21
- Published applications
- 16
- Assignees
- 17
- Inventors
- 62
- Latest grant
- 20 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 3 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Vacuum valve and method for manufacturing vacuum circuit breaker20 Aug 2024US 12,068,122 B2Mitsubishi Electric Corporation
- Vacuum circuit interrupter with dual plate actuation5 Sep 2023US 11,749,477 B2Eaton Intelligent Power Limited
- Double-contact switch having vacuum switching chambers30 Mar 2021US 10,964,497 B2Eaton Intelligent Power Limited
- Actuating system for a vacuum bottle9 Feb 2021US 10,916,393 B2Schneider Electric Industries SAS
- On-load tap changer and method of and system for operating same19 Nov 2019US 10,483,879 B2Maschinenfabrik Reinhausen GmbH
- Vacuum interrupter, assembly comprising vacuum interrupters, and method for grading or controlling a voltage distribution among vacuum interrupters10 Oct 2024US 2024/0339275 A1Siemens Energy Global GmbH & Co. KG
- Vacuum valve and method for manufacturing vacuum circuit breaker29 Dec 2022US 2022/0415594 A1Mitsubishi Electric Corporation
- Vacuum circuit interrupter with dual plate actuation27 Oct 2022US 2022/0344115 A1Eaton Intelligent Power Limited
- Double-contact switch having vacuum switching chambers1 Oct 2020US 2020/0312593 A1Eaton Intelligent Power Limited
- Actuating system for a vacuum bottle27 Aug 2020US 2020/0273646 A1Schneider Electric Industries SAS
Most cited
By later US patents
- Vacuum switching apparatus with double interruption and including an interposed barrier17US 4,107,496 AHazemeijer B. V. · 1978
- Encapsulated vacuum interrupter with grounded end cup and drive rod12US 8,497,446 B12013
- Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof6US 6,529,009 B2Hitachi, Ltd. · 2003
- Double break vacuum interrupter6US 8,471,166 B12013
- Double-contact switch with vacuum switching chambers6US 9,741,513 B2Eaton Electrical IP GmbH & Co. KG · 2017