B61G 1/22
Couplings comprising interengaging parts of different shape or form and having links
Official title: having screws incorporated in the links for lengthening or shortening the couplings
B61G1/22 (Couplings comprising interengaging parts of different shape or form and having links) appears on 5 US grants and 4 published applications in this corpus.
Search patents in B61G- Granted patents
- 5
- Published applications
- 4
- Assignees
- 6
- Inventors
- 12
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
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| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
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| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 2 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System for automatic coupling and release of vehicles travelling on the rail network20 Jan 2026US 12,528,522 B2Co.El.Da. Software Srl
- Train coupler arrangement with axial expansion module23 Jul 2024US 12,043,296 B2Dellner Couplers AB
- Coupling support for a central buffer coupling of a rail vehicle4 Jun 2024US 11,999,389 B2Siemens Mobility GmbH
- Electrical connecting apparatus for supplying power to coupled cars of a rail vehicle28 Nov 2023US 11,827,252 B2HARTING Electric GmbH & Co. KG
- Train coupling system31 Aug 1976US 3,977,532 ASouthwest Products Co.
- System for automatic coupling and release of vehicles travelling on the rail network4 Jan 2024US 2024/0001974 A1Co.El.Da. Software Srl
- Coupling support for a central buffer coupling of a rail vehicle21 Oct 2021US 2021/0323587 A1Siemens Mobility GmbH
- Train coupler arrangement with axial expansion module19 Aug 2021US 2021/0253146 A1Dellner Couplers AB
- Electrical connecting apparatus for supplying power to coupled cars of a rail vehicle19 Mar 2020US 2020/0086896 A1HARTING Electric GmbH & Co. KG
Most cited
By later US patents