H01H 71/34
Having two or more armatures controlled by a common winding
Official title: having two or more armatures controlled by a common winding
H01H71/34 (Having two or more armatures controlled by a common winding) appears on 40 US grants and 8 published applications in this corpus.
Search patents in H01H- Granted patents
- 40
- Published applications
- 8
- Assignees
- 24
- Inventors
- 73
- Latest grant
- 29 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Ultra-fast moving conductor with removable core pin29 Aug 2023US 11,742,169 B2Eaton Intelligent Power Limited
- Electromagnetic trip unit25 Oct 2022US 11,482,392 B2Schneider Electric Industries SAS
- Direct-acting electromagnetic trip device18 May 2021US 11,011,336 B2Seari Electric Technology Co., Ltd.
- Switching-device tripping apparatus17 Jan 2017US 9,548,175 B2Siemens Aktiengesellschaft
- Circuit breaker8 Feb 2005US 6,853,274 B2Airpax Corporation, LLC
- Ultra-fast moving conductor with removable core pin15 Jun 2023US 2023/0187157 A1Eaton Intelligent Power Limited
- Electromagnetic trip unit23 Jan 2020US 2020/0027680 A1Schneider Electric Industries SAS
- Direct-acting electromagnetic trip device20 Jun 2019US 2019/0189380 A1Seari Electric Technology Co., Ltd.
- Switching-device tripping apparatus2 Oct 2014US 2014/0292452 A1Siemens Aktiengellschaft
- Switching Equipment Comprising a Thermal and Electromagnetic Trip Device22 May 2008US 2008/0117006 A1
Most cited
By later US patents
- Parallel contact circuit breaker19US 6,034,586 AAirpax Corporation, LLC · 2000
- Circuit breaker with improved delay17US 4,062,052 AAirpax Electronics Incorporated · 1977
- Magnetic trigger for a selectively operative switch16US 4,808,952 ASprecher & Schuh AG · 1989
- Dual plunger solenoid device15US 4,503,411 ACooper Industries, Inc. · 1985
- Circuit breaker with moving magnetic core for low current magnetic trip14US 4,951,015 AWestinghouse Electric Corp. · 1990