B61F 5/12
Incorporating dampers
Official title: incorporating dampers
B61F5/12 (Incorporating dampers) appears on 168 US grants and 114 published applications in this corpus.
Search patents in B61F- Granted patents
- 168
- Published applications
- 114
- Assignees
- 70
- Inventors
- 236
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 4 |
| 2004 | 3 | 4 |
| 2005 | 3 | 4 |
| 2006 | 2 | 3 |
| 2007 | 4 | 5 |
| 2008 | 2 | 6 |
| 2009 | 4 | 3 |
| 2010 | 5 | 5 |
| 2011 | 2 | 5 |
| 2012 | 4 | 1 |
| 2013 | 3 | 7 |
| 2014 | 6 | 6 |
| 2015 | 4 | 6 |
| 2016 | 7 | 5 |
| 2017 | 6 | 6 |
| 2018 | 2 | 10 |
| 2019 | 4 | 7 |
| 2020 | 9 | 9 |
| 2021 | 8 | 5 |
| 2022 | 6 | 3 |
| 2023 | 3 | 2 |
| 2024 | 1 | 4 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Railroad car truck damper wedge fittings4 Aug 2026US 12,698,016 B2National Steel Car Limited
- Railcar truck roller bearing adapter-pad systems6 May 2025US 12,291,247 B2Nevis Industries LLC
- Train suspension device and suspended monorail train29 Oct 2024US 12,128,935 B2Crrc Zhuzhou Locomotive Co., Ltd.
- Railroad car truck damper wedge fittings7 Nov 2023US 11,807,282 B2National Steel Car Limited
- Railway truck assembly having compressible side bearings28 Mar 2023US 11,613,281 B2Amsted Rail Company, Inc.
- Rail Car29 May 2025US 2025/0171058 A1Hitachi, Ltd.
- Bolster friction pocket5 Sep 2024US 2024/0294195 A1Transportation IP Holdings, LLC
- Rail vehicle8 Aug 2024US 2024/0262396 A1BYD Company Limited
- Railroad car truck damper wedge fittings1 Feb 2024US 2024/0034366 A1National Steel Car Limited
- Railcar Truck Roller Bearing Adapter-Pad Systems11 Jan 2024US 2024/0010246 A1Nevis Industries LLC
Most cited
By later US patents
- Railway truck damping assembly70US 4,915,031 AHansen Inc. · 1990
- Damped railway car suspension64US 4,356,775 A1982
- Dual face friction wedge61US 5,511,489 AStandard Car Truck Company · 1996
- Rail road freight car with damped suspension60US 6,895,866 B2National Steel Car Limited · 2005
- Frictionally snubbed railway car truck59US 4,109,585 AAMSTED Industries Incorporated · 1978