B61G 9/08
With fluid springs or fluid shock-absorbers
Official title: with fluid springs or fluid shock-absorbers; Combinations thereof
B61G9/08 (With fluid springs or fluid shock-absorbers) appears on 26 US grants and 6 published applications in this corpus.
Search patents in B61G- Granted patents
- 26
- Published applications
- 6
- Assignees
- 18
- Inventors
- 40
- Latest grant
- 25 Dec 2007
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Positional variable orifice pin for hydraulic pressure control in a draft gear25 Dec 2007US 7,311,215 B2Wabtec Holding Corp.
- High capacity draft gear2 Aug 2005US 6,923,331 B2Westinghouse Air Brake Technologies Corporation
- Traction/compression buffer for coupling devices on rail and wheel-mounted vehicles9 Nov 2004US 6,814,348 B1
- Gas-hydraulic shock absorber assembly30 Dec 2003US 6,669,180 B2Schwab Verkehrstechnik AG
- Rail car cushioning device and method for positioning same19 Mar 2002US 6,357,612 B1ASF-Keystone, Inc.
- Damper arrangement comprising a damper and a plurality of elastomeric elements6 Feb 2025US 2025/0042451 A1Dellner Couplers AB
- Method and system for monitoring structural status of railcar draft gear13 Jun 2019US 2019/0178754 A1Jiaxing Broadsens Technology, Ltd.
- Railcar cushioning device29 Aug 2013US 2013/0220961 A1Amsted Rail Company, Inc.
- Positional variable orifice pin for hydraulic pressure control in a draft gear2 Mar 2006US 2006/0043046 A1Wabtec Holding Corp.
- High capacity draft gear10 Feb 2005US 2005/0029214 A1Westinghouse Air Brake Technologies Corporation
Most cited
By later US patents
- Elastomer spring/hydraulic shock absorber cushioning device38US 5,845,796 AMiner Enterprises, Inc. · 1998
- Hydro-pneumatic cushioning device19US 5,487,480 AOleo International Holdings Limited · 1996
- Railcar cushioning device with internal elastomeric spring15US 6,199,708 B1ASF-Keystone, Inc. · 2001
- Railcar cushion unit14US 5,415,303 AF M Industries, Inc. · 1995
- Railway car cushioning device13US 4,040,523 AACF Industries, Incorporated · 1977