E01B 27/023
Spreading, levelling or redistributing ballast already placed
Official title: {Spreading, levelling or redistributing ballast already placed}
E01B27/023 (Spreading, levelling or redistributing ballast already placed) appears on 59 US grants and 19 published applications in this corpus.
Search patents in E01B- Granted patents
- 59
- Published applications
- 19
- Assignees
- 34
- Inventors
- 63
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 0 |
| 2016 | 2 | 2 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 4 |
| 2024 | 2 | 0 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Track maintenance machine with a conveyor or excavating chain arrangement11 Nov 2025US 12,467,208 B2Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Auto stow wings7 Oct 2025US 12,435,474 B2Progress Rail Services Corporation
- Sweeping device for working on a track system18 Feb 2025US 12,227,903 B2Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Method and track maintenance machine for treatment of a ballast track1 Oct 2024US 12,104,330 B2Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Ballast sweeping installation for picking up and distributing ballast located on a track4 Jun 2024US 12,000,093 B2Plasser & Theurer Export von Bahnhaumaschinen Gesellschaft m.b.H.
- Auto Stow Wings6 Jul 2023US 2023/0212828 A1Progress Rail Services Corporation
- Lock with floating nest29 Jun 2023US 2023/0203760 A1Progress Rail Services Corporation
- Track maintenance machine with a conveyor or excavating chain arrangement2 Mar 2023US 2023/0069281 A1Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Sweeping device for working on a track system2 Feb 2023US 2023/0031915 A1Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Track ballast levelling apparatus3 Nov 2022US 2022/0349128 A1System 7 Ballast Regulator GmbH
Most cited
By later US patents
- Mobile track leveling, lining and tamping apparatus19US 4,165,694 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1979
- Tie remover and inserter19US 4,951,573 AHarsco Corporation · 1990
- Apparatus for laying track18US 4,094,249 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. · 1978
- Ballast leveling apparatus and method18US 4,355,687 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1982
- Ballast regulator side plow17US 4,196,532 AMateriel Industriel S.A. · 1980