B61F 3/10
With three or more axles
Official title: with three or more axles
B61F3/10 (With three or more axles) appears on 22 US grants and 10 published applications in this corpus.
Search patents in B61F- Granted patents
- 22
- Published applications
- 10
- Assignees
- 14
- Inventors
- 22
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 3 |
| 2019 | 3 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Span bolster3 Mar 2026US 12,565,247 B2Kasgro Rail Corp.
- Systems and methods for balancing a single truck industrial locomotive30 Mar 2021US 10,960,902 B2Tractive Power Corporation
- Method of manufacturing a multiple axle railcar having a span bolster8 Sep 2020US 10,766,507 B2Kasgro Rail Corp.
- Railway vehicle and funicular apparatus22 Oct 2019US 10,449,977 B2Agence Nationale Pour La Gestion Des Dechets Radioactifs
- Railway vehicle and funicular apparatus22 Oct 2019US 10,449,978 B2Agence Nationale Pour La Gestion Des Dechets Radioactifs
- Multiple-axle rail car with span bolsters13 Mar 2025US 2025/0083712 A1Kasgro Rail Corp.
- Span bolster27 Jan 2022US 2022/0024499 A1Kasgro Rail Corp.
- Systems and methods for balancing a single truck industrial locomotive13 Sep 2018US 2018/0257679 A1Tractive Power Corporation
- Method of Manufacturing a Multiple Axle Railcar Having a Span Bolster12 Jul 2018US 2018/0194374 A1Kasgro Rail Corp.
- Railway Vehicle and Funicular Apparatus5 Apr 2018US 2018/0093679 A1Agence Nationale Pour La Gestion Des Dechets Radioactifs
Most cited
By later US patents
- Damping railway vehicle suspension63US 4,067,261 ASouth African Inventions Development Corporation · 1978
- Multi-axle railroad car truck50US 5,632,208 ANational Castings, Inc. · 1997
- Articulated coupling for integral trains24US 4,718,351 AGeneral Signal Corporation · 1988
- Container securing device21US 4,792,269 AGeneral Signal Corporation · 1988
- Three axle steered truck5US 4,542,700 AUrban Transportation Development Corporation Ltd. · 1985