B61K 3/00
Wetting or lubricating rails or wheel flanges
B61K3/00 (Wetting or lubricating rails or wheel flanges) appears on 136 US grants and 101 published applications in this corpus.
Search patents in B61K- Granted patents
- 136
- Published applications
- 101
- Assignees
- 69
- Inventors
- 202
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 4 |
| 2003 | 3 | 7 |
| 2004 | 4 | 8 |
| 2005 | 3 | 3 |
| 2006 | 7 | 6 |
| 2007 | 4 | 5 |
| 2008 | 2 | 5 |
| 2009 | 2 | 4 |
| 2010 | 4 | 3 |
| 2011 | 4 | 4 |
| 2012 | 1 | 3 |
| 2013 | 5 | 5 |
| 2014 | 3 | 10 |
| 2015 | 6 | 3 |
| 2016 | 3 | 2 |
| 2017 | 2 | 6 |
| 2018 | 2 | 1 |
| 2019 | 8 | 6 |
| 2020 | 1 | 4 |
| 2021 | 4 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 3 |
| 2024 | 4 | 4 |
| 2025 | 4 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Discharge nozzle for discharging grit or lubricant18 Aug 2026US 12,709,309 B2Nowe GmbH
- Systems and methods for inspection of a track of an amusement attraction11 Nov 2025US 12,466,450 B2Universal City Studios LLC
- Drive unit for rail lubricating devices and a method for using the same19 Aug 2025US 12,391,292 B2
- Multiphase composite lubricant27 May 2025US 12,312,551 B2New York Air Brake Corporation
- Drone with railway driving capabilities13 May 2025US 12,296,993 B2Railway Robotics AS
- Solid-liquid bi-phase lubricating devices and methods of using same6 Feb 2025US 2025/0043111 A1P&S Global Holding LLC
- A drive unit for rail lubricating devices and a method for using the same15 Aug 2024US 2024/0270292 A1
- Multiphase composite lubricant21 Mar 2024US 2024/0093112 A1New York Air Brake Corporation
- Systems and methods for inspection of a track of an amusement attraction14 Mar 2024US 2024/0083475 A1Universal City Studios LLC
- Improved drone with railway driving capabilities7 Mar 2024US 2024/0076065 A1Railway Robotics AS
Most cited
By later US patents
- On-board lubrication system for direct application to curved and tangent railroad track39US 5,477,941 ATranergy Corporation · 1995
- Stick coating applicator holder37US 5,054,582 A1991
- Automatic rail greasing apparatus33US 4,214,647 A1980
- Intelligent on-board rail lubrication system for curved and tangent track33US 4,930,600 ATranergy Corporation · 1990
- Rail lubrication apparatus32US 5,641,037 APortec, Inc., R M P Division · 1997