B61C 15/00
Maintaining or augmenting the starting or braking power by auxiliary devices and
Official title: Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels (propelling locomotives or motor railcars by special means B61C11/00; driving wheels with non-slipping devices B60B; brakes B61H; wetting or lubricating rails B61K)
B61C15/00 (Maintaining or augmenting the starting or braking power by auxiliary devices and) appears on 195 US grants and 184 published applications in this corpus.
Search patents in B61C- Granted patents
- 195
- Published applications
- 184
- Assignees
- 97
- Inventors
- 390
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 3 | 5 |
| 2004 | 3 | 7 |
| 2005 | 4 | 9 |
| 2006 | 7 | 1 |
| 2007 | 3 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 8 |
| 2010 | 0 | 6 |
| 2011 | 1 | 6 |
| 2012 | 3 | 6 |
| 2013 | 7 | 8 |
| 2014 | 6 | 11 |
| 2015 | 5 | 7 |
| 2016 | 9 | 12 |
| 2017 | 10 | 9 |
| 2018 | 10 | 15 |
| 2019 | 12 | 10 |
| 2020 | 5 | 14 |
| 2021 | 8 | 9 |
| 2022 | 16 | 10 |
| 2023 | 4 | 12 |
| 2024 | 9 | 7 |
| 2025 | 6 | 3 |
| 2026 | 10 | 4 |
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
- Magnetic traction assist for railcar mover21 Jul 2026US 12,686,418 B2Trackmobile LLC
- Control device and control method for controlling one or more slip-protection systems and one or more systems for outputting adhesion-optimizing means in rail vehicles19 May 2026US 12,630,198 B2Knorr-Bremse Systeme FüR Schienenfahrzeuge GmbH
- Pneumatic sand conveying device for a sanding system of a rail vehicle, sanding system, and method for operating a pneumatic sand conveying device19 May 2026US 12,630,199 B2Knorr-Bremse GmbH
- Vehicle control system21 Apr 2026US 12,606,133 B2Westinghouse Air Brake Technologies Corporation
- Method for monitoring the proper working of a sanding system of a rail vehicle20 Aug 2026US 2026/0241963 A1Siemens Mobility GmbH
- Adhesion enhancement compositions6 Aug 2026US 2026/0226334 A1L B Foster Rail Technologies, Inc
- Fill level monitoring30 Apr 2026US 2026/0116437 A1Siemens Mobility GmbH
- Devices and tooling system for maintenance of dynamic weight management systems on railroad vehicles26 Mar 2026US 2026/0084252 A1BNSF Railway Company
- Friction testing system, computer-implemented friction-testing method for a rail vehicle, computer program and non-volatile data carrier4 Sep 2025US 2025/0276723 A1Dellner Bubenzer AB
Most cited
By later US patents
- Rail vehicles with propulsion energy recovery system101US 4,108,077 A1978
- Adaptive acceleration responsive system50US 4,075,538 AGeneral Electric Company · 1978
- Method for inhibiting wheel slip in an electric alternating current induction motor powered vehicle45US 5,480,220 AGeneral Electric Company · 1996
- Method for monitoring and controlling traction motors in locomotives44US 6,984,946 B2Railpower Technologies Corp. · 2006
- On-board lubrication system for direct application to curved and tangent railroad track39US 5,477,941 ATranergy Corporation · 1995