E01B 31/18
Reconditioning or repairing worn or damaged parts on the spot
Official title: Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding (E01B31/04 - E01B31/12 take precedence); Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
E01B31/18 (Reconditioning or repairing worn or damaged parts on the spot) appears on 45 US grants and 44 published applications in this corpus.
Search patents in E01B- Granted patents
- 45
- Published applications
- 44
- Assignees
- 49
- Inventors
- 100
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 0 |
| 2013 | 2 | 4 |
| 2014 | 1 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 6 |
| 2019 | 1 | 4 |
| 2020 | 4 | 3 |
| 2021 | 1 | 3 |
| 2022 | 3 | 2 |
| 2023 | 1 | 0 |
| 2024 | 3 | 8 |
| 2025 | 4 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for reprofiling at least one switch blade in points laid in a railway track26 May 2026US 12,637,813 B2MATE GmbH
- Systems and methods for performing maintenance of an amusement park attraction system10 Mar 2026US 12,571,165 B2Universal City Studios LLC
- Mobile waterjet rail repair system21 Oct 2025US 12,448,747 B2RailRestore BV, RailRestore Holding BV
- Burning apparatus for railway repair15 Jul 2025US 12,358,072 B2Goldschmidt Holding GmbH
- Mobile device for heating a rail of a permanent way using infrared-radiation electric lamps, and associated heating method24 Jun 2025US 12,338,583 B2Matisa Material Industriel S.A.
- Method for increasing hardened layer thickness of a rail head of a flash welded joint of a steel rail and a steel rail16 Jul 2026US 2026/0200019 A1Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd.
- Automated Geometry and Crowning Apparatus for Use of Mobile Electric Flash-Butt Welding of Railroad Rails and Rail Inserts12 Mar 2026US 2026/0071391 A1
- Mobile waterjet rail repair system22 Jan 2026US 2026/0022526 A1RailRestore BV
- Rail heater and method of use20 Nov 2025US 2025/0354339 A1Sperling Railway Services, Inc.
- Induction rail heater8 May 2025US 2025/0151179 A1
Most cited
By later US patents
- Self-propelled rail heater car with movable induction heating coils82US 5,299,504 ATechnical Rail Products, Incorporated · 1994
- Device for the substitution of the rails of railway tracks18US 5,181,472 ALes Fils d'Auguste Scheuchzer S. A. · 1993
- Gas shield chamber for arc welding of rails13US 4,686,341 ANippon Kokan Kabushiki Kaisha · 1987
- Rail heating module and assembly13US 6,308,635 B1Kershaw Manufacturing Company, Inc. · 2001
- Method of laying railroad rail11US 3,999,276 A1976