B61F 5/38
Arrangements or devices for adjusting or allowing self- adjustment of wheel axles
Official title: Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
B61F5/38 (Arrangements or devices for adjusting or allowing self- adjustment of wheel axles) appears on 335 US grants and 171 published applications in this corpus.
Search patents in B61F- Granted patents
- 335
- Published applications
- 171
- Assignees
- 165
- Inventors
- 509
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 11 | 0 |
| 1980 | 10 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 20 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 11 | 0 |
| 1988 | 10 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 2 |
| 2003 | 3 | 2 |
| 2004 | 4 | 5 |
| 2005 | 4 | 4 |
| 2006 | 4 | 3 |
| 2007 | 1 | 3 |
| 2008 | 2 | 3 |
| 2009 | 2 | 6 |
| 2010 | 4 | 8 |
| 2011 | 4 | 5 |
| 2012 | 4 | 6 |
| 2013 | 10 | 7 |
| 2014 | 9 | 10 |
| 2015 | 2 | 5 |
| 2016 | 9 | 14 |
| 2017 | 9 | 6 |
| 2018 | 10 | 13 |
| 2019 | 9 | 14 |
| 2020 | 8 | 11 |
| 2021 | 13 | 14 |
| 2022 | 10 | 10 |
| 2023 | 11 | 6 |
| 2024 | 5 | 7 |
| 2025 | 4 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B61F 5/44Adjustment controlled by movements of vehicle body89
- B61F 5/386Fluid actuated44
- B61F 5/383Adjustment controlled by non-mechanical devices33
- B61F 5/40Bogies with side frames mounted for longitudinal relative movements27
- B61F 5/46Adjustment controlled by a sliding axle under the same vehicle underframe17
- B61F 5/48Trailing or leading bogies for locomotives or motor- driven railcars14
- B61F 5/42Adjustment controlled by buffer or coupling gear8
Recent patents
- Method for improving curvilinear running speed of railway vehicle and smart tilting system11 Aug 2026US 12,703,406 B2Zhuzhou Times New Material Technology Co., Ltd.
- Assembly for transmitting longitudinal forces in a rail vehicle14 Jul 2026US 12,679,428 B2Siemens Mobility GmbH
- Multi-unit railroad car and railroad car trucks therefor10 Mar 2026US 12,570,334 B2National Steel Car Limited
- Underneath type railway freight car bogie wheelset radial device18 Nov 2025US 12,472,996 B2Crrc Meishan Co., Ltd.
- Electric rail vehicle13 May 2025US 12,296,866 B2Parallel Systems, Inc.
- Multifunctional steering control system for radial bogies30 Jul 2026US 2026/0217285 A1Changchun Sujian New Technology Development Co., Ltd.
- Multi-unit railroad car and railroad car trucks therefor11 Jun 2026US 2026/0159140 A1National Steel Car Limited
- Computer-implemented method and control device for determining a real time steering angle11 Sep 2025US 2025/0282397 A1Traila AG
- Electric rail vehicle28 Aug 2025US 2025/0269882 A1Parallel Systems, Inc.
- System and method for estimating track curvature for active steering control of railcars22 May 2025US 2025/0162626 A1Korea Railroad Research Institute
Most cited
By later US patents
- Flexible railway car truck68US 4,938,152 ARailway Engineering Associates, Inc. · 1990
- Flexible railway car truck66US 4,483,253 A1984
- Radial axle railway truck64US 4,134,343 AGeneral Steel Industries, Inc. · 1979
- Self-steering railway truck64US 4,151,801 ASouth African Inventions Development Corporation · 1979
- Steering railroad truck64US 4,413,569 AAMSTED Industries Incorporated · 1983