H01H 19/12
Contact arrangements for providing make-before-break operation
Official title: Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing
H01H19/12 (Contact arrangements for providing make-before-break operation) appears on 18 US grants and 10 published applications in this corpus.
Search patents in H01H- Granted patents
- 18
- Published applications
- 10
- Assignees
- 17
- Inventors
- 49
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Passive triggered-power electronic tap-changer device and contact device14 Jan 2025US 12,198,886 B2Electric Power Research Institute. China Southern Power Grid
- Dual start control circuit for auxiliary inverters of railway vehicle26 Sep 2023US 11,770,077 B2CRRC Nanjing Puzhen Co., Ltd.
- Motor drive with disengageable coupling26 Mar 2019US 10,242,811 B2Maschinenfabrik Reinhausen GmbH
- High-voltage switch for series/parallel applications and tap changer applications8 Jan 2019US 10,176,943 B1SPX Transformer Solutions, Inc.
- Longitudinal switch for electric contact locking and position changing system18 Dec 2018US 10,157,718 B2Riotrafo Ltda
- Passive triggered-power electronic tap-changer device and contact device20 Jul 2023US 2023/0230780 A1Electric Power Research Institute. China Southern Power Grid
- Mechanical Device for Regulating Operating Sequence of Parallel Heat Pump Systems3 Nov 2022US 2022/0349630 A1
- Dual Start Control Circuit for Auxiliary Inverters of Railway Vehicle13 Oct 2022US 2022/0329175 A1CRRC Nanjing Puzhen Co., Ltd.
- Longitudinal switch for electric contact locking and position changing system26 Oct 2017US 2017/0309422 A1Riotrafo Ltda
- Motor drive20 Apr 2017US 2017/0110265 A1Maschinenfabrik Reinhausen GmbH
Most cited
By later US patents
- Automatic height control for a harvester header56US 4,332,126 ADeere & Company · 1982
- High-voltage loadbreak switch with enhanced arc suppression22US 6,797,909 B2McGraw-Edison Company · 2004
- Make-before-break selector switch17US 6,825,426 B2McGraw-Edison Company · 2004
- Rotational control dial with flush/protruding flip handle15US 5,128,503 AFrantz Medical Development Ltd. · 1992
- Electrical switching system and method to switch this system8US 4,736,114 ASachsenwerk Licht- und Kraft-Aktiengesellshaft · 1988