E01B 27/18
By introducing additional fresh material under the sleepers
Official title: by introducing additional fresh material under the sleepers, e.g. by the measured-shovel method, by the blowing method
E01B27/18 (By introducing additional fresh material under the sleepers) appears on 11 US grants and 5 published applications in this corpus.
Search patents in E01B- Granted patents
- 11
- Published applications
- 5
- Assignees
- 8
- Inventors
- 16
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 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 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method, apparatus and system for lifting railroad structures14 Jan 2025US 12,195,925 B2Enerpac Tool Group Corp.
- Road rail stoneblower1 Sep 2020US 10,760,221 B2Harsco Technologies LLC
- Stoneblower for rail applications28 Aug 2018US 10,060,078 B2Harsco Technologies LLC
- Switch stoneblower1 Jan 2002US 6,334,396 B1
- Stone metering system for railroad track maintenance vehicle2 Feb 1999US 5,865,592 APandrol Jackson, Inc.
- Prefabricated wire mesh assembly for ballast and method of constructing gravel-ballasted track using the same10 Apr 2025US 2025/0116071 A1Korea Railroad Research Institute
- Method, Apparatus and System for Lifting Railroad Structures14 Oct 2021US 2021/0317615 A1Track Tools, LLC
- Road rail stoneblower27 Dec 2018US 2018/0371698 A1Harsco Technologies LLC
- Stoneblower for rail applications6 Apr 2017US 2017/0096779 A1Harsco Technologies LLC
- Switch stoneblower22 Nov 2001US 2001/0042487 A1
Most cited
By later US patents
- Stone metering system for railroad track maintenance vehicle9US 5,584,641 APandrol Jackson, Inc. · 1996
- Tool for stone-blowing7US 4,850,752 AKango Wolf Power Tools Limited · 1989
- Stoneblower having adjustable workheads and improved blowing tubes7US 5,577,446 APandrol Jackson, Inc. · 1996
- Mobile track position correction machine6US 4,497,256 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1985
- Track leveling method4US 4,528,912 A1985