B61G 11/14
Absorbing shocks by mechanical friction action
Official title: absorbing shocks by mechanical friction action; Combinations of mechanical shock-absorbers and springs (B61G11/06 takes precedence)
B61G11/14 (Absorbing shocks by mechanical friction action) appears on 12 US grants and 9 published applications in this corpus.
Search patents in B61G- Granted patents
- 12
- Published applications
- 9
- Assignees
- 9
- Inventors
- 18
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Railroad freight car draft gear friction modifying insert4 Nov 2025US 12,459,550 B2Miner Enterprises, Inc.
- Friction shock absorber3 May 2022US 11,320,020 B2
- Rail vehicle having a coupling arranged in the front region thereof2 Feb 2021US 10,906,569 B2Siemens Mobility GmbH
- Friction shock absorber28 Jul 2020US 10,723,372 B2
- Coupler30 Jan 2018US 9,878,728 B2T A Savery & Co., LTD
- Railroad freight car draft geart friction modifying insert10 Aug 2023US 2023/0249720 A1Miner Enterprises, Inc.
- Friction shock absorber29 Jul 2021US 2021/0231189 A1
- Friction shock absorber3 Oct 2019US 2019/0301559 A1
- Friction shock absorber16 May 2019US 2019/0144016 A1
- Friction shock absorber13 Dec 2018US 2018/0355947 A1
Most cited
By later US patents
- Railroad car draft gear having a long travel18US 6,478,173 B2Miner Enterprises, Inc. · 2002
- Friction spring unit8US 4,262,887 ARingfeder GmbH · 1981
- Force absorbing arrangement8US 4,282,979 ARingfeder GmbH · 1981
- Arrangement for resilient absorption of forces4US 4,260,142 ARingfeder GmbH · 1981
- Arrangement for the absorption of forces4US 4,262,888 ARingfeder GmbH · 1981