B61G 3/04
Couplings comprising mating parts of similar shape or form which can be
Official title: with coupling head having a guard arm on one side and a knuckle with angularly-disposed nose and tail portions pivoted to the other side thereof, the nose of the knuckle being the coupling part, and means to lock the knuckle in coupling position, e.g. "A.A.R." or "Janney" type
B61G3/04 (Couplings comprising mating parts of similar shape or form which can be) appears on 158 US grants and 102 published applications in this corpus.
Search patents in B61G- Granted patents
- 158
- Published applications
- 102
- Assignees
- 55
- Inventors
- 172
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 7 |
| 2010 | 1 | 1 |
| 2011 | 2 | 6 |
| 2012 | 6 | 10 |
| 2013 | 7 | 8 |
| 2014 | 11 | 8 |
| 2015 | 6 | 7 |
| 2016 | 5 | 9 |
| 2017 | 7 | 7 |
| 2018 | 5 | 3 |
| 2019 | 7 | 4 |
| 2020 | 3 | 9 |
| 2021 | 4 | 1 |
| 2022 | 5 | 4 |
| 2023 | 4 | 3 |
| 2024 | 3 | 6 |
| 2025 | 3 | 1 |
| 2026 | 5 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Coupling arrangement25 Aug 2026US 12,715,486 B2Bradken Resources Pty Limited
- Coupler and vehicle with coupler7 Jul 2026US 12,673,523 B2Crrc Qiqihar Rolling Stock Co., Ltd.
- Coupler knuckle internal pivot pin support2 Jun 2026US 12,643,581 B2New York Air Brake Corporation
- Railcar coupler key retainer apparatus12 May 2026US 12,623,697 B2Miner Enterprises, Inc.
- Safety device21 Apr 2026US 12,606,220 B2
- Coupler head for a coupler assembly of a multi-car rail vehicle, coupler assembly, and method of retrofitting a coupler head with a safety device19 Jun 2025US 2025/0196899 A1
- Ride vehicle decoupling control system and method31 Oct 2024US 2024/0359108 A1Universal City Studios LLC
- Coupling arrangement17 Oct 2024US 2024/0343276 A1Bradken Resources Pty Limited
- Safety device19 Sep 2024US 2024/0308554 A1
- Coupler and Vehicle with Coupler11 Jul 2024US 2024/0227471 A9Crrc Qiqihar Rolling Stock Co., Ltd.
Most cited
By later US patents
- Low profile railway car112US 5,320,046 ATrinity Industries, Inc. · 1994
- Railway car coupler knuckle44US 5,582,307 AAMSTED Industries Incorporated · 1996
- Method and system for manufacturing a coupler knuckle44US 7,302,994 B2McConway & Torley Corporation · 2007
- Slack reduced lock member for a type E raiway coupler41US 5,878,897 AMcConway & Torley Corporation · 1999
- Lightweight knuckle for a railroad car coupler37US 6,129,227 ANational Casting Incorporated · 2000