H01H 71/44
Having means for introducing a predetermined time delay
Official title: having means for introducing a predetermined time delay (by short-circuited winding H01H71/30; by additional armature H01H71/34)
H01H71/44 (Having means for introducing a predetermined time delay) appears on 41 US grants and 16 published applications in this corpus.
Search patents in H01H- Granted patents
- 41
- Published applications
- 16
- Assignees
- 26
- Inventors
- 61
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 2 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tripping device for a circuit breaker10 Mar 2026US 12,573,573 B2Siemens Energy Global GmbH & Co. KG
- Configurable circuit-breaker13 Oct 2020US 10,804,045 B2Siemens Aktiengesellschaft
- System and method with timing self-configuration4 Jun 2019US 10,312,042 B2Amazon Technologies, Inc.
- Delay time generation apparatus for air circuit breaker20 Feb 2018US 9,899,177 B2Lsis Co., Ltd.
- System and method with timing self-configuration14 Feb 2017US 9,570,253 B1Amazon Technologies, Inc.
- Tripping device for a circuit breaker8 Feb 2024US 2024/0047162 A1Siemens Energy Global GmbH & Co. KG
- Operating mechanism for tripping a voltage circuit breaker4 Jan 2018US 2018/0005775 A1General Electric Technology GmbH
- Configurable circuit-breaker24 Aug 2017US 2017/0243702 A1Siemens Aktiengesellschaft
- Delay time generation apparatus for air circuit breaker29 Jun 2017US 2017/0186580 A1Lsis Co., Ltd.
- System and method with timing self-configuration1 Jun 2017US 2017/0154745 A1Amazon Technologies, Inc.
Most cited
By later US patents
- Switching device for the interruption of fault currents29US 5,206,616 ASachsenwerk Aktiengesellschaft · 1993
- Parallel contact circuit breaker19US 6,034,586 AAirpax Corporation, LLC · 2000
- Circuit breaker with improved delay17US 4,062,052 AAirpax Electronics Incorporated · 1977
- Circuit breaker with impact trip delay15US 4,697,163 AWestinghouse Electric Corp. · 1987
- Selective trip unit for a multipole circuit breaker13US 5,831,499 ASchneider Electric SA · 1998