H01H 9/0027
Operating mechanisms
Official title: {Operating mechanisms}
H01H9/0027 (Operating mechanisms) appears on 138 US grants and 143 published applications in this corpus.
Search patents in H01H- Granted patents
- 138
- Published applications
- 143
- Assignees
- 44
- Inventors
- 266
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 3 |
| 2009 | 3 | 5 |
| 2010 | 1 | 2 |
| 2011 | 3 | 3 |
| 2012 | 3 | 3 |
| 2013 | 2 | 6 |
| 2014 | 2 | 12 |
| 2015 | 9 | 20 |
| 2016 | 13 | 9 |
| 2017 | 9 | 8 |
| 2018 | 8 | 3 |
| 2019 | 8 | 4 |
| 2020 | 2 | 4 |
| 2021 | 6 | 4 |
| 2022 | 2 | 20 |
| 2023 | 5 | 14 |
| 2024 | 16 | 9 |
| 2025 | 12 | 7 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- On-load tap changer and tap-changing transformer having an on-load tap changer29 Sep 2026US 12,749,634 B2Maschinenfabrik Reinhausen GmbH
- On-load tap changer and tap-changing transformer having an on-load tap changer18 Aug 2026US 12,712,136 B2Maschinenfabrik Reinhausen GmbH
- Electrical switch for an on-load tap changer5 May 2026US 12,620,535 B2Hitachi Energy Ltd
- Full range boosting device for accumulator of on-load tap changer, accumulator, and on-load tap changer21 Apr 2026US 12,609,240 B2Beijing Aerospace Control Device Institute
- Switch assembly comprising an on-load tap changer and a drive system14 Apr 2026US 12,603,235 B2Maschinenfabrik Reinhausen GmbH
- On-load tap changer and method for operating an on-load tap changer30 Apr 2026US 2026/0120969 A1Hitachi Energy Ltd
- Electrical operating means comprising a tap changer5 Feb 2026US 2026/0038736 A1
- On-load tap-changer25 Dec 2025US 2025/0391617 A1West Journey Corporation
- Tap modification device configured to provide enhanced operating frequency range6 Nov 2025US 2025/0343013 A1Ppc Broadband, Inc.
- Apparatus and system for remotely operating a reset switch for electrical equipment30 Oct 2025US 2025/0336618 A1Duke Energy Corporation
Most cited
By later US patents
- Tap selector39US 6,060,669 AMaschinenfabrik Reinhausen GmbH · 2000
- Load switch for a step transformer29US 5,107,200 AMaschinenfabrik Reinhausen GmbH · 1992
- Tap selector anti-arcing system26US 5,191,179 ACooper Power Systems, Inc. · 1993
- On-load tap changer of a step switch23US 5,834,717 AMaschinenfabrik Reinhausen GmbH · 1998
- Vacuum switch bulb type change over switch for on-load tap changer20US 5,594,223 AFuji Electric Co., Ltd. · 1997