H01H 31/003
Earthing switches
Official title: {Earthing switches (H01H31/02 - H01H31/26 take precedence; contact made by liquid jet H01H29/32; for substations H02B1/16, H02B5/01; for withdrawable switchgear H02B11/28; for gas-insulated switchgear H02B13/075)}
H01H31/003 (Earthing switches) appears on 272 US grants and 262 published applications in this corpus.
Search patents in H01H- Granted patents
- 272
- Published applications
- 262
- Assignees
- 113
- Inventors
- 621
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 5 |
| 2002 | 7 | 10 |
| 2003 | 8 | 8 |
| 2004 | 9 | 9 |
| 2005 | 7 | 11 |
| 2006 | 8 | 8 |
| 2007 | 8 | 10 |
| 2008 | 5 | 9 |
| 2009 | 2 | 15 |
| 2010 | 7 | 14 |
| 2011 | 12 | 12 |
| 2012 | 16 | 13 |
| 2013 | 11 | 11 |
| 2014 | 9 | 10 |
| 2015 | 12 | 9 |
| 2016 | 12 | 3 |
| 2017 | 6 | 12 |
| 2018 | 6 | 9 |
| 2019 | 10 | 9 |
| 2020 | 12 | 7 |
| 2021 | 8 | 13 |
| 2022 | 7 | 14 |
| 2023 | 10 | 11 |
| 2024 | 10 | 17 |
| 2025 | 12 | 6 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Switch for a medium voltage or high voltage switchgear6 Oct 2026US 12,755,911 B2ABB Schweiz AG
- Voltage transformer disconnect switch for utility metering sections of a medium voltage switchgear11 Aug 2026US 12,706,261 B2Iem New Sub 2 LLC
- Rapid safety switch and rapid safety switch system14 Jul 2026US 12,683,103 B2Siemens Aktiengesellschaft
- Apparatuses and methods for improved switchgear sensor data communication7 Jul 2026US 12,676,271 B2Hubbell Incorporated
- Switching system of an electrical device16 Jun 2026US 12,658,387 B2Schneider Electric Industries SAS
- Apparatuses and methods for improved switchgear sensor data communication1 Oct 2026US 2026/0302107 A1Hubbell Incorporated
- Earth switching device17 Sep 2026US 2026/0279704 A1Hyosung Heavy Industries Corporation
- Mechanical fuse device for protecting switching apparatus30 Apr 2026US 2026/0117826 A1Hitachi Energy Ltd
- Fast earthing switch30 Apr 2026US 2026/0120982 A1Hitachi Energy Ltd
- Visual indicator for an electrical assembly16 Apr 2026US 2026/0104278 A1GE Vernova Infrastructure Technology LLC
Most cited
By later US patents
- Isolating ground switch59US 9,728,354 B2Electric Motion Company, Inc. · 2017
- Gas insulated switchgear with grounding and disconnecting switches39US 5,796,060 AAsea Brown Boveri AG · 1998
- Switchgear module and configurations, and method of fabrication and assembly thereof32US 5,521,567 AS&C Electric Company · 1996
- Vacuum load break switch29US 4,484,046 APower Distribution Products, Inc. · 1984
- Isolator switch26US 6,242,708 B1Eaton Corporation · 2001