B61F 5/06
Incorporating metal springs
Official title: incorporating metal springs
B61F5/06 (Incorporating metal springs) appears on 97 US grants and 86 published applications in this corpus.
Search patents in B61F- Granted patents
- 97
- Published applications
- 86
- Assignees
- 46
- Inventors
- 147
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 4 |
| 2004 | 1 | 2 |
| 2005 | 3 | 3 |
| 2006 | 1 | 3 |
| 2007 | 3 | 1 |
| 2008 | 2 | 4 |
| 2009 | 4 | 4 |
| 2010 | 3 | 5 |
| 2011 | 3 | 3 |
| 2012 | 3 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 5 |
| 2015 | 3 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 4 |
| 2018 | 2 | 11 |
| 2019 | 5 | 11 |
| 2020 | 9 | 7 |
| 2021 | 8 | 3 |
| 2022 | 7 | 3 |
| 2023 | 2 | 2 |
| 2024 | 1 | 4 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Mobile railway asset monitoring apparatus and methods23 Apr 2024US 11,964,681 B2Amsted Rail Company, Inc.
- Railroad car truck damper wedge fittings7 Nov 2023US 11,807,282 B2National Steel Car Limited
- Overhead hoist transport system5 Sep 2024US 2024/0294196 A1Samsung Electronics Co., Ltd.
- Mobile Railway Asset Monitoring Apparatus and Methods18 Jul 2024US 2024/0239386 A1Amsted Rail Company, Inc.
- 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
- Railcar Truck Roller Bearing Adapter-Pad Systems16 Nov 2023US 2023/0365167 A1Nevis Industries LLC
Most cited
By later US patents
- Rail road freight car with damped suspension60US 6,895,866 B2National Steel Car Limited · 2005
- Rail road freight car with resilient suspension56US 6,659,016 B2National Steel Car Limited · 2003
- Railway car truck bolster assembly55US 4,370,933 AAMSTED Industries Incorporated · 1983
- Damping railway truck friction shoe54US 4,256,041 AAMSTED Industries Incorporated · 1981
- Railway truck bolster friction assembly52US 4,295,429 AA. Stucki Company · 1981