H01H 71/501
Means for breaking welded contacts
Official title: {Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker}
H01H71/501 (Means for breaking welded contacts) appears on 116 US grants and 41 published applications in this corpus.
Search patents in H01H- Granted patents
- 116
- Published applications
- 41
- Assignees
- 52
- Inventors
- 222
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 12 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 3 |
| 2003 | 4 | 1 |
| 2004 | 2 | 4 |
| 2005 | 3 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 3 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 3 | 8 |
| 2019 | 9 | 1 |
| 2020 | 0 | 3 |
| 2021 | 2 | 1 |
| 2022 | 2 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- System and method of detecting a welded contact12 Aug 2025US 12,387,883 B2Rockwell Automation Switzerland GmbH
- Circuit breaker14 May 2024US 11,984,282 B2Ellenberger & Poensgen GmbH
- Electrical overload protection device and method of use24 Oct 2023US 11,798,767 B1
- Power switch enclosure6 Sep 2022US 11,437,203 B2Hubbell Incorporated
- Operating attachment19 Apr 2022US 11,309,156 B2Eaton Intelligent Power Limited
- Circuit breaker interlock mechanism15 May 2025US 2025/0157771 A1Rockwell Automation Switzerland GmbH
- Linkage Device for Electric Switch Assembly and Electric Switch Assembly Comprising the Linkage Device10 Apr 2025US 2025/0118505 A1ABB Schweiz AG
- Electrical overload protection device and method of use16 Nov 2023US 2023/0368999 A1Lumi Legend Electrical Co. LTD
- System and Method of Detecting a Welded Contact9 Feb 2023US 2023/0044944 A1Rockwell Automation Switzerland GmbH
- Power switch enclosure29 Dec 2022US 2022/0415588 A1
Most cited
By later US patents
- Circuit breaker with positive off protection121US 5,296,664 AWestinghouse Electric Corp. · 1994
- Circuit breaker with remote control and disconnection function120US 5,477,016 AMerlin Gerin · 1995
- Circuit breaker with a blocking mechanism and a blocking mechanism for a circuit breaker111US 5,543,595 AKlockner-Moeller GmbH · 1996
- Electrical circuit breaker operating handle block109US 5,200,724 AWestinghouse Electric Corp. · 1993
- Circuit-breaker operating mechanism105US 4,129,762 ASociete Anonyme dite: UNELEC · 1978