B61L 23/02
Control, warning or like safety means along the route or between vehicles
Official title: for indicating along the route the failure of brakes
B61L23/02 (Control, warning or like safety means along the route or between vehicles) appears on 6 US grants and 6 published applications in this corpus.
Search patents in B61L- Granted patents
- 6
- Published applications
- 6
- Assignees
- 6
- Inventors
- 17
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1985 | 1 | 0 |
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| 2006 | 0 | 1 |
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| 2008 | 1 | 0 |
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| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vehicle braking control system21 Jul 2026US 12,686,369 B1FAIVELEY TRANSPORT ITALIA S. p. A.
- Systems and methods for adjusting train operation20 Dec 2022US 11,529,979 B2Progress Rail Services Corporation
- Redundant method of confirming an ECP penalty5 Nov 2019US 10,464,584 B2Westinghouse Air Brake Technologies Corporation
- Fault diagnosis apparatus for brake of train and automatic train operation equipment due to the reduction braking performance using the same and fault diagnosis method for brake of train15 Jan 2019US 10,180,369 B2Lsis Co., Ltd.
- Railroad car coupler gap analyzer12 Feb 2008US 7,328,871 B2Progressive Rail Technologies, Inc.
- Vehicle braking control system30 Jul 2026US 2026/0217229 A1FAIVELEY TRANSPORT ITALIA S. p. A.
- Systems and methods for detecting applied railcar brakes using thermal imaging26 Feb 2026US 2026/0054755 A1BNSF Railway Company
- Systems and methods for adjusting train operation16 Sep 2021US 2021/0284210 A1Progress Rail Services Corporation
- Redundant Method of Confirming an ECP Penalty22 Feb 2018US 2018/0050711 A1Westinghouse Air Brake Technologies Corporation
- Fault diagnosis apparatus for brake of train and automatic train operation equipment due to the reduction braking performance using the same and fault diagnosis method for brake of train28 Sep 2017US 2017/0278319 A1Lsis Co., Ltd.
Most cited
By later US patents
- Railroad car coupler gap analyzer33US 7,328,871 B2Progressive Rail Technologies, Inc. · 2008
- Train defect detecting and enunciating system16US 4,491,290 A1985
- Redundant method of confirming an ECP penalty2US 10,464,584 B2Westinghouse Air Brake Technologies Corporation · 2019
- Systems and methods for adjusting train operation1US 11,529,979 B2Progress Rail Services Corporation · 2022