B61F 5/00
Constructional details of bogies
Official title: Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
B61F5/00 (Constructional details of bogies) appears on 1,546 US grants and 962 published applications in this corpus.
Search patents in B61F- Granted patents
- 1,546
- Published applications
- 962
- Assignees
- 512
- Inventors
- 2,177
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 20 | 0 |
| 1978 | 35 | 0 |
| 1979 | 29 | 0 |
| 1980 | 34 | 0 |
| 1981 | 35 | 0 |
| 1982 | 44 | 0 |
| 1983 | 21 | 0 |
| 1984 | 42 | 0 |
| 1985 | 25 | 0 |
| 1986 | 19 | 0 |
| 1987 | 32 | 0 |
| 1988 | 30 | 0 |
| 1989 | 30 | 0 |
| 1990 | 21 | 0 |
| 1991 | 27 | 0 |
| 1992 | 25 | 0 |
| 1993 | 25 | 0 |
| 1994 | 16 | 0 |
| 1995 | 26 | 0 |
| 1996 | 37 | 0 |
| 1997 | 23 | 0 |
| 1998 | 28 | 0 |
| 1999 | 21 | 0 |
| 2000 | 26 | 0 |
| 2001 | 31 | 6 |
| 2002 | 30 | 19 |
| 2003 | 22 | 19 |
| 2004 | 18 | 29 |
| 2005 | 15 | 23 |
| 2006 | 19 | 17 |
| 2007 | 10 | 19 |
| 2008 | 15 | 20 |
| 2009 | 15 | 23 |
| 2010 | 15 | 40 |
| 2011 | 19 | 27 |
| 2012 | 25 | 45 |
| 2013 | 38 | 37 |
| 2014 | 41 | 53 |
| 2015 | 28 | 54 |
| 2016 | 56 | 69 |
| 2017 | 48 | 57 |
| 2018 | 56 | 69 |
| 2019 | 60 | 89 |
| 2020 | 54 | 57 |
| 2021 | 62 | 53 |
| 2022 | 54 | 44 |
| 2023 | 43 | 28 |
| 2024 | 25 | 32 |
| 2025 | 24 | 18 |
| 2026 | 21 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B61F 5/02Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and863
- B61F 5/26Mounting or securing axle-boxes in vehicle or bogie underframes453
- B61F 5/50Constructional details of bogies: other details400
- B61F 5/38Arrangements or devices for adjusting or allowing self- adjustment of wheel axles335
Recent patents
- Locked-axle spring compression system and method15 Sep 2026US 12,735,080 B2BNSF Railway Company
- Bogie for a light rail system25 Aug 2026US 12,715,309 B2The Council of the City of Coventry Council House
- Bogie frame for a railway vehicle25 Aug 2026US 12,715,485 B2Hitachi, Ltd.
- 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.
- Railroad car truck damper wedge fittings4 Aug 2026US 12,698,016 B2National Steel Car Limited
- Undercarriage for a rail-bound maglev vehicle of a magnetic levitation train, and maglev vehicle13 Aug 2026US 2026/0233766 A1Max Boegl Stiftung & Co. KG
- Narrow vehicle body high-speed maglev train and suspension frame therefor6 Aug 2026US 2026/0225626 A1Crrc Qingdao Sifang Co., Ltd.
- Multifunctional steering control system for radial bogies30 Jul 2026US 2026/0217285 A1Changchun Sujian New Technology Development Co., Ltd.
- An automated storage and retrieval system with logically operable barriers for safe enter and exit into a transport vehicle, and an associated method23 Jul 2026US 2026/0208769 A1Autostore Technology AS
- An automated storage and retrieval system comprising lockable barriers for safe transfer of persons into a transport vehicle on a live grid, and associated method23 Jul 2026US 2026/0208770 A1Autostore Technology AS
Most cited
By later US patents
- System and method for the detection of vehicle rollover conditions256US 5,825,284 ARollover Operations, LLC · 1998
- Bogie vehicle with electrohydraulic brakes and hydropneumatic suspension103US 5,074,624 ACompagnie Industrielle de Materiel de Transport · 1991
- Service-life, low-profile, retrofittable, elastomeric mounting for three-piece, railroad-car trucks101US 5,237,933 ALord Corporation · 1993
- Lateral control mount77US 6,178,894 B22001
- Resilient railroad car truck76US 4,111,131 AStandard Car Truck Company · 1978