B61J 3/12
Self-propelled tractors or pushing vehicles
Official title: Self-propelled tractors or pushing vehicles, e.g. mules (with cable traction B61J3/06)
B61J3/12 (Self-propelled tractors or pushing vehicles) appears on 45 US grants and 29 published applications in this corpus.
Search patents in B61J- Granted patents
- 45
- Published applications
- 29
- Assignees
- 30
- Inventors
- 82
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 3 | 1 |
| 2019 | 1 | 5 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 3 | 3 |
| 2023 | 1 | 3 |
| 2024 | 2 | 5 |
| 2025 | 1 | 1 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- End cab switcher locomotive4 Aug 2026US 12,698,012 B2Siemens Mobility GmbH
- Magnetic traction assist for railcar mover21 Jul 2026US 12,686,418 B2Trackmobile LLC
- Laser alignment system for railcar mover and method of use17 Mar 2026US 12,576,894 B2Zephir S.p.A.
- Mechanical coupling in automated gladhand system13 Jan 2026US 12,522,261 B2Trackmobile LLC
- Railcar spacing tool22 Apr 2025US 12,280,812 B2Inter-Rail Transport, Inc.
- Transport Facility7 May 2026US 2026/0125084 A1Daifuku Co., Ltd.
- Platform lift for railroad car moving vehicle6 Feb 2025US 2025/0042450 A1Stewart & Stevenson LLC
- Magnetic Traction Assist for Railcar Mover17 Oct 2024US 2024/0343272 A1Trackmobile LLC
- End cab switcher locomotive26 Sep 2024US 2024/0317279 A1Siemens Mobility GmbH
- Freight handling system and method23 May 2024US 2024/0166246 A1Kaci Intermodal Systems, LLC
Most cited
By later US patents
- Spike-type railcar mover with optional gate opener76US 7,377,219 B2Calbrandt, Inc. · 2008
- Railroad car moving vehicle43US 5,168,815 AStewart & Stevenson Services, Inc. · 1992
- Retractable wheeled vehicle18US 4,355,584 AWhite Machinery Corporation · 1982
- Railcar-moving vehicle with load-shifting device13US 6,786,158 B22004
- Low clearance train positioner12US 6,267,059 B1Motion Controls, Inc. · 2001