H01H 3/3047
Adapted for operation of a three-position switch
Official title: {adapted for operation of a three-position switch, e.g. on-off-earth}
H01H3/3047 (Adapted for operation of a three-position switch) appears on 21 US grants and 10 published applications in this corpus.
Search patents in H01H- Granted patents
- 21
- Published applications
- 10
- Assignees
- 16
- Inventors
- 56
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 3 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus for operating an electric switching device28 Oct 2025US 12,456,589 B2Hitachi Energy Ltd
- Key switch22 Aug 2023US 11,735,376 B2PIAGGIO & C. S. p. A.
- Medium voltage switching apparatus1 Aug 2023US 11,715,613 B2ABB Schweiz AG
- Switch device1 Nov 2022US 11,488,790 B2ABB Schweiz AG
- Dual power automatic transfer switch mechanism26 Oct 2021US 11,158,467 B2Schneider Electric Industries SAS
- Apparatus for operating an electric switching device29 Jun 2023US 2023/0207229 A1Hitachi Energy Switzerland AG
- Key switch15 Sep 2022US 2022/0293351 A1PIAGGIO & C. S. p. A.
- Medium voltage switching apparatus8 Sep 2022US 2022/0285110 A1ABB Schweiz AG
- Switch device2 Jun 2022US 2022/0172908 A1ABB Schweiz AG
- Electromechanical actuation system for momentary contact control switches14 Nov 2019US 2019/0348230 A1Schweitzer Engineering Laboratories, Inc.
Most cited
By later US patents
- Ankle brace having multiple inflatable aircells155US 5,125,400 AAircast, Inc. · 1992
- Three-position switch actuating mechanism89US 5,438,176 AMerlin Gerin · 1995
- Operating mechanism of a three-position switch9US 4,916,268 AMerlin Gerin · 1990
- Safety trip mechanism for multi-position switch8US 4,095,065 AG & W Electric Specialty Company · 1978
- Latching operating mechanism of a three-position circuit breaker8US 4,821,008 A1989