B61F 5/34
Wedge mechanisms for adjusting clearance between underframes and axles
B61F5/34 (Wedge mechanisms for adjusting clearance between underframes and axles) appears on 11 US grants and 4 published applications in this corpus.
Search patents in B61F- Granted patents
- 11
- Published applications
- 4
- Assignees
- 13
- Inventors
- 15
- Latest grant
- 24 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Spring cup for a primary suspension of a rail vehicle24 Sep 2019US 10,421,466 B2Siemens Mobility GmbH
- Suspension for a rail vehicle21 Sep 2010US 7,798,069 B2SCT Europe Limited
- Non-metallic insert for rail car bolster wedge24 Jun 2008US 7,389,731 B2ASF-Keystone, Inc.
- Railcar adapter16 Nov 1993US 5,261,332 AUnity Railway Supply Co., Inc.
- Railcar adapter29 Sep 1992US 5,150,658 AUnity Railway Supply Co., Inc.
- Spring Cup for A Primary Suspension of a Rail Vehicle23 Nov 2017US 2017/0334467 A1Siemens AG Oesterreich
- Railway Bogies1 Oct 2009US 2009/0242335 A1SCT Europe Limited
- Suspension for a rail vehicle30 Oct 2008US 2008/0264292 A1SCT Europe Limited
- Non-metallic insert for rail car bolster wedge15 Feb 2007US 2007/0034108 A1ASF-Keystone, Inc.
Most cited
By later US patents
- Dual purpose wear plate66US 4,785,740 AGeneral Standard Company · 1988
- Bolster for a railroad car truck50US 4,357,880 AMidland-Ross Corporation · 1982
- Welded side frame column wear plate46US 4,316,417 ADresser Industries, Inc. · 1982
- Universally suspended snubbing railway axle truck42US 4,109,586 ABritish Steel Corporation · 1978
- Railcar adapter30US 5,261,332 AUnity Railway Supply Co., Inc. · 1993