B61G
Couplings
Official title: COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general B60D)
B61G (Couplings) appears on 1,089 US grants and 671 published applications in this corpus.
Search patents in B61G- Granted patents
- 1,089
- Published applications
- 671
- Assignees
- 352
- Inventors
- 1,445
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 27 | 0 |
| 1978 | 29 | 0 |
| 1979 | 11 | 0 |
| 1980 | 14 | 0 |
| 1981 | 27 | 0 |
| 1982 | 24 | 0 |
| 1983 | 11 | 0 |
| 1984 | 19 | 0 |
| 1985 | 10 | 0 |
| 1986 | 20 | 0 |
| 1987 | 27 | 0 |
| 1988 | 13 | 0 |
| 1989 | 13 | 0 |
| 1990 | 23 | 0 |
| 1991 | 16 | 0 |
| 1992 | 34 | 0 |
| 1993 | 17 | 0 |
| 1994 | 19 | 0 |
| 1995 | 17 | 0 |
| 1996 | 25 | 0 |
| 1997 | 14 | 0 |
| 1998 | 16 | 0 |
| 1999 | 19 | 0 |
| 2000 | 21 | 0 |
| 2001 | 21 | 2 |
| 2002 | 15 | 7 |
| 2003 | 6 | 12 |
| 2004 | 16 | 13 |
| 2005 | 8 | 25 |
| 2006 | 14 | 16 |
| 2007 | 15 | 23 |
| 2008 | 12 | 26 |
| 2009 | 19 | 28 |
| 2010 | 21 | 20 |
| 2011 | 21 | 26 |
| 2012 | 22 | 29 |
| 2013 | 27 | 34 |
| 2014 | 32 | 26 |
| 2015 | 28 | 29 |
| 2016 | 22 | 30 |
| 2017 | 32 | 38 |
| 2018 | 21 | 37 |
| 2019 | 34 | 51 |
| 2020 | 33 | 39 |
| 2021 | 37 | 20 |
| 2022 | 40 | 38 |
| 2023 | 25 | 39 |
| 2024 | 21 | 33 |
| 2025 | 29 | 17 |
| 2026 | 35 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B61G 5/00Couplings for special purposes not otherwise provided for334
- B61G 7/00Details or accessories331
- B61G 9/00Draw-gear304
- B61G 3/00Couplings comprising mating parts of similar shape or form which can be201
- B61G 11/00Buffers154
- B61G 1/00Couplings comprising interengaging parts of different shape or form and having links85
Recent patents
- Electrical coupler for a first car of a multi-car vehicle29 Sep 2026US 12,746,954 B2Dellner Couplers AB
- Power supply system for groups of electrical loads1 Sep 2026US 12,722,669 B2HARTING Electric Stiftung & Co. KG
- Coupling arrangement25 Aug 2026US 12,715,486 B2Bradken Resources Pty Limited
- Device for supporting cables for articulated vehicles18 Aug 2026US 12,709,123 B2P.E.I. Protezioni Elaborazioni Industriali S.r.l.
- Articulated vehicle arrangement for a rail freight train18 Aug 2026US 12,709,310 B2Sws Ps Power Solutions GmbH
- Automatic Railcar Coupling System8 Oct 2026US 2026/0307688 A1Trackmobile LLC
- Railcar drawbar assembly17 Sep 2026US 2026/0274310 A1Miner Enterprises, Inc.
- Control system and control method for a vehicle coupler, coupler and vehicle3 Sep 2026US 2026/0257702 A1FAIVELEY TRANSPORT ITALIA S. p. A.
- Central buffer coupler, signal transceiver, vehicle member and computer-implemented method30 Jul 2026US 2026/0217286 A1Dellner Couplers AB
- Coupling for rail vehicle30 Jul 2026US 2026/0217287 A1Dellner Couplers AB
Most cited
By later US patents
- Vehicle system and method166US 9,550,501 B2General Electric Company · 2017
- Low profile railway car112US 5,320,046 ATrinity Industries, Inc. · 1994
- Polymeric apparatus and method of making the same84US 4,566,678 AMiner Enterprises, Inc. · 1986
- Rail semi-trailer and releasable coupler77US 4,741,273 A1988
- Crossbelt sortation system74US 5,588,520 ARapistan Demag Corporation · 1996