B61K 9/00
Railway vehicle profile gauges
Official title: Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
B61K9/00 (Railway vehicle profile gauges) appears on 697 US grants and 723 published applications in this corpus.
Search patents in B61K- Granted patents
- 697
- Published applications
- 723
- Assignees
- 381
- Inventors
- 1,581
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 10 | 4 |
| 2002 | 9 | 7 |
| 2003 | 12 | 10 |
| 2004 | 8 | 15 |
| 2005 | 7 | 12 |
| 2006 | 9 | 17 |
| 2007 | 13 | 23 |
| 2008 | 8 | 18 |
| 2009 | 14 | 19 |
| 2010 | 19 | 17 |
| 2011 | 11 | 13 |
| 2012 | 15 | 18 |
| 2013 | 19 | 25 |
| 2014 | 19 | 34 |
| 2015 | 26 | 27 |
| 2016 | 25 | 43 |
| 2017 | 30 | 43 |
| 2018 | 35 | 41 |
| 2019 | 43 | 41 |
| 2020 | 39 | 52 |
| 2021 | 25 | 50 |
| 2022 | 45 | 32 |
| 2023 | 25 | 46 |
| 2024 | 50 | 53 |
| 2025 | 37 | 35 |
| 2026 | 26 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Traveling rail detection system with a multi-axis adjustment of detection device29 Sep 2026US 12,746,955 B2Shanghai Oriental Machine Vision & Inspection Technology Co., Ltd
- Systems and methods for detecting tanks in railway environments1 Sep 2026US 12,722,670 B2BNSF Railway Company
- Device and method for monitoring railway health in large windy desert area1 Sep 2026US 12,722,672 B2Lanzhou University
- Rail bond monitor18 Aug 2026US 12,709,313 B2Modular Railway Systems
- Railway system with diagnostic system and method for operating same4 Aug 2026US 12,698,018 B2Siemens Mobility GmbH
- Rail guided carriage system and method for estimating abnormal section of rail guided carriage system8 Oct 2026US 2026/0307689 A1Murata Machinery, Ltd.
- Rail vehicle and method for capturing a track gauge course24 Sep 2026US 2026/0285378 A1Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- In-motion track stiffness change detection17 Sep 2026US 2026/0274311 A1University of South Carolina
- Integrated intelligent cab system for train drivers3 Sep 2026US 2026/0257708 A1Casco Signal Ltd.
- Power converter27 Aug 2026US 2026/0249888 A1Railway Equipment Company, Inc.
Most cited
By later US patents
- Automated track inspection vehicle and method122US 6,064,428 ANational Railroad Passenger Corporation · 2000
- Railroad track profile spacing and alignment apparatus114US 4,040,738 AGulton Industries, Inc. · 1977
- Method and apparatus for monitoring railway defects102US 5,867,404 ACairo Systems, Inc. · 1999
- Apparatus and method for detecting defective conditions in railway vehicle wheels and railtracks90US 5,433,111 AGeneral Electric Company · 1995
- Bearing with sensor module88US 6,161,962 AThe Timken Company · 2000