E01B 27/04
Removing the ballast
Official title: Removing the ballast; Machines therefor, whether or not additionally adapted for taking-up ballast (E01B27/06, E01B27/12 takes precedence; redistributing ballasting material E01B27/02)
E01B27/04 (Removing the ballast) appears on 69 US grants and 42 published applications in this corpus.
Search patents in E01B- Granted patents
- 69
- Published applications
- 42
- Assignees
- 36
- Inventors
- 81
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 3 |
| 2003 | 4 | 2 |
| 2004 | 2 | 1 |
| 2005 | 3 | 3 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 3 |
| 2013 | 0 | 2 |
| 2014 | 3 | 4 |
| 2015 | 2 | 0 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 2 | 2 |
| 2021 | 1 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 4 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Dual ballast cribber2 Dec 2025US 12,486,621 B2Soterran Group, LLC
- Track maintenance machine with a conveyor or excavating chain arrangement11 Nov 2025US 12,467,208 B2Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Systems and methods for confining ballast samples4 Jun 2024US 12,000,762 B2BNSF Railway Company
- Dual ballast cribber4 Oct 2022US 11,459,707 B2Soterran Group, LLC
- Rail anchor applicator and cribber apparatus26 Apr 2022US 11,313,083 B2Nordco Inc.
- Machine with a ballast receiviing device5 Dec 2024US 2024/0401284 A1Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Cribbing system and method6 Jun 2024US 2024/0183114 A1Transportation IP Holdings, LLC
- Excavating finger and associated excavating bucket28 Mar 2024US 2024/0102267 A1Matisa Materiel Industriel S.A.
- Dual ballast cribber14 Sep 2023US 2023/0287631 A1Soterran Group, LLC
- Link for an excavating chain and associated excavating chain3 Aug 2023US 2023/0243108 A1Matisa Materiel Industriel S.A.
Most cited
By later US patents
- Undercutter with rotary trencher28US 3,967,396 ACanron, Inc. · 1976
- Apparatus for removing ballast from beneath a railroad track23US 4,563,826 AKershaw Manufacturing Company, Inc. · 1986
- Apparatus for replacing rail fastening elements and, optionally, rails19US 4,393,784 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1983
- Apparatus for laying track18US 4,094,249 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. · 1978
- Low-center-of-gravity self-unloading train for bulk commodities14US 4,795,301 A1989