B61G 3/20
Control devices
Official title: Control devices, e.g. for uncoupling
B61G3/20 (Control devices) appears on 6 US grants and 8 published applications in this corpus.
Search patents in B61G- Granted patents
- 6
- Published applications
- 8
- Assignees
- 7
- Inventors
- 17
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 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 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Extendable coupler2 Jun 2026US 12,643,582 B2
- Train coupler, system and method for automatic coupling trains, and related train26 Aug 2025US 12,397,831 B2ALSTOM Holdings
- Non-stop train with attaching and detaching train cars6 Dec 2022US 11,518,416 B2
- Automatic uncoupling mechanism for couplers27 Jul 2021US 11,072,353 B2Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd. X
- Coupler uncoupling control mechanism8 Oct 2019US 10,435,046 B2Qingdao Sri Technology Co., Ltd.
- Coupler comprising a blocking mechanism for preventing coupling of the mechanical coupler, and method to operate a coupler1 Aug 2024US 2024/0253674 A1Dellner Couplers AB
- Coupler with angular position detection assembly, angular position detection system and method25 Jul 2024US 2024/0246580 A1Dellner Couplers AB
- Extendable Coupler21 Dec 2023US 2023/0406371 A1
- Automatic train coupling7 Dec 2023US 2023/0391380 A1Voith Patent GmbH
- Train coupler, system and method for automatic coupling trains, and related train30 Jun 2022US 2022/0204059 A1ALSTOM Holdings
Most cited
By later US patents