E01B 29/42
Undetachably joining or fastening track components in or on the track
Official title: Undetachably joining or fastening track components in or on the track, e.g. by welding, by gluing; Pre-assembling track components by gluing; Sealing joints with filling components (E01B31/26 takes precedence; independent heating means E01B31/18; welding in general B23K; gluing metal parts in general F16B11/00)
E01B29/42 (Undetachably joining or fastening track components in or on the track) appears on 84 US grants and 65 published applications in this corpus.
Search patents in E01B- Granted patents
- 84
- Published applications
- 65
- Assignees
- 47
- Inventors
- 147
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 4 | 3 |
| 2004 | 3 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 4 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 1 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 0 | 5 |
| 2013 | 2 | 2 |
| 2014 | 4 | 2 |
| 2015 | 3 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 6 |
| 2018 | 5 | 3 |
| 2019 | 0 | 7 |
| 2020 | 6 | 3 |
| 2021 | 2 | 0 |
| 2022 | 3 | 3 |
| 2023 | 2 | 3 |
| 2024 | 1 | 5 |
| 2025 | 5 | 2 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Welded rail29 Sep 2026US 12,747,483 B2Nippon Steel Corporation
- Tool for aligning rail segments6 Jan 2026US 12,516,477 B2Caterpillar Inc.
- Automated geometry and crowning apparatus for use of mobile electric flash-butt welding of railroad rails and rail inserts11 Nov 2025US 12,466,008 B2One Rail Group, LLC
- Processing system and method for performing track work26 Aug 2025US 12,398,518 B2Robel Bahnbaumaschinen GmbH
- Burning apparatus for railway repair15 Jul 2025US 12,358,072 B2Goldschmidt Holding GmbH
- Improved cable connecting piece8 Oct 2026US 2026/0312306 A1Safetrack Infrasystems SISAB AB
- Zero Emission Railroad Tracks Welder17 Sep 2026US 2026/0273646 A1
- Automated Geometry and Crowning Apparatus for Use of Mobile Electric Flash-Butt Welding of Railroad Rails and Rail Inserts12 Mar 2026US 2026/0071391 A1
- Automated Geometry and Crowning Apparatus for Use of Mobile Electric Flash-Butt Welding of Railroad Rails and Rail Inserts5 Feb 2026US 2026/0034616 A1One Rail Group, LLC
- Rail grinding machine and method thereof18 Sep 2025US 2025/0290254 A1Sperling Railway Services, Inc.
Most cited
By later US patents
- Method and system for welding railroad rails64US 6,278,074 B1Lincoln Global.Inc. · 2001
- Method and apparatus for flash butt welding railway rails28US 5,270,514 AChemetron-Railway Products, Inc. · 1993
- Method of railroad rail repair26US 6,515,249 B1Harsco Technologies LLC · 2003
- Method of welding continuous rails and apparatus therefor25US 4,414,454 AH. A. Schlatter AG · 1983
- Electric flash-butt welding machine and method of providing a welded joint between adjacent ends of rail sections25US 4,929,816 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft · 1990