H01H 51/08
Contacts alternately opened and closed by successive cycles of energisation and de-energisation
Official title: Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
H01H51/08 (Contacts alternately opened and closed by successive cycles of energisation and de-energisation) appears on 41 US grants and 19 published applications in this corpus.
Search patents in H01H- Granted patents
- 41
- Published applications
- 19
- Assignees
- 30
- Inventors
- 98
- Latest grant
- 29 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 3 |
| 2003 | 2 | 0 |
| 2004 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 1 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Electromagnetic switch for sliding shoe sorter conveyor system utilizing reversed current flow in electromagnet coil29 Nov 2022US 11,511,948 B2Lafayette Engineering, Inc.
- Relay30 Mar 2021US 10,964,504 B2OMRON Corporation
- Relay14 Jul 2020US 10,714,291 B2OMRON Corporation
- Apparatus and method for powering a coil of latching relays and hybrid switches10 Mar 2020US 10,586,671 B2Elbex Video Ltd.
- High voltage DC relay30 Apr 2019US 10,276,335 B2Carling Technologies, Inc.
- Movable contact driving device and switching apparatus6 Mar 2025US 2025/0079094 A1Schneider Electric Industries SAS
- Electromagnetic switch for sliding shoe sorter conveyor system utilizing reversed current flow in electromagnet coil3 Feb 2022US 2022/0037103 A1Lafayette Engineering, Inc.
- Relay16 Jul 2020US 2020/0227224 A1OMRON Corporation
- Switching contact arrangement24 Oct 2019US 2019/0326086 A1Phoenix Contact GmbH & Co.KG
- Relay20 Sep 2018US 2018/0269018 A1OMRON Corporation
Most cited
By later US patents
- Remote control system75US 4,518,945 ALeviton Manufacturing Co., Inc. · 1985
- Remote control system49US 4,386,338 ALeviton Manufacturing Co., Inc. · 1983
- Twin break transfer switch29US 4,791,255 AWestinghouse Electric Corp. · 1988
- Safety lock for the doors of electrical applicances29US 5,062,668 AEllenberger & Poensgen GmbH · 1991
- Methods and apparatus for transfer switch25US 6,849,811 B1General Electric Company · 2005