H01H 21/42
Produced by compression or extension of coil spring
Official title: produced by compression or extension of coil spring
H01H21/42 (Produced by compression or extension of coil spring) appears on 42 US grants and 27 published applications in this corpus.
Search patents in H01H- Granted patents
- 42
- Published applications
- 27
- Assignees
- 35
- Inventors
- 89
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 1 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 5 |
| 2018 | 2 | 0 |
| 2019 | 4 | 6 |
| 2020 | 3 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Switching system with fuse isolation13 Jan 2026US 12,525,415 B2Eaton Intelligent Power Limited
- Switch-type power disconnection device and battery pack including the same28 Nov 2023US 11,830,697 B2LG Energy Solution, Ltd.
- Switching apparatus8 Nov 2022US 11,495,417 B2ABB Schweiz AG
- Dual power automatic transfer switch mechanism26 Oct 2021US 11,158,467 B2Schneider Electric Industries SAS
- Dual power supply transfer switch and switching mechanism thereof27 Oct 2020US 10,818,443 B2Schneider Electric Industries SAS
- Limit switch17 Sep 2026US 2026/0279703 A1OMRON Corporation
- Switching system with fuse isolation19 Mar 2026US 2026/0081085 A1Eaton Intelligent Power Limited
- Switching system with fuse isolation19 Dec 2024US 2024/0420903 A1Eaton Intelligent Power Limited
- Switch-Type Power Disconnection Device and Battery Pack Including the Same29 Dec 2022US 2022/0415589 A1LG Energy Solution, Ltd.
- Switching apparatus13 Aug 2020US 2020/0258696 A1ABB Schweiz AG
Most cited
By later US patents
- Compact electric safety switch97US 4,675,481 AGeneral Electric Company · 1987
- Fused disconnect switch28US 4,778,959 AGeneral Electric Company · 1988
- Switch24US 7,115,829 B2Moeller Gebaudeautomation GmbH · 2006
- Switch mechanism for service disconnect17US 5,850,909 A1998
- Electrical switches16US 4,748,431 AHarvey Hubbell Incorporated · 1988