B61F 5/245
By active damping, i.e. with means to vary the damping characteristics in
Official title: {by active damping, i.e. with means to vary the damping characteristics in accordance with track or vehicle induced reactions, especially in high speed mode}
B61F5/245 (By active damping, i.e. with means to vary the damping characteristics in) appears on 68 US grants and 59 published applications in this corpus.
Search patents in B61F- Granted patents
- 68
- Published applications
- 59
- Assignees
- 45
- Inventors
- 148
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 5 |
| 2014 | 2 | 8 |
| 2015 | 5 | 5 |
| 2016 | 8 | 3 |
| 2017 | 3 | 5 |
| 2018 | 4 | 1 |
| 2019 | 3 | 7 |
| 2020 | 2 | 3 |
| 2021 | 2 | 0 |
| 2022 | 1 | 8 |
| 2023 | 2 | 1 |
| 2024 | 3 | 3 |
| 2025 | 3 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for improving curvilinear running speed of railway vehicle and smart tilting system11 Aug 2026US 12,703,406 B2Zhuzhou Times New Material Technology Co., Ltd.
- System and method for guidance control on a wheeled bogie6 Jan 2026US 12,515,717 B2Dp World Logistics US Holdings, Inc.
- Tilting system and tilting control method for railway vehicle and railway vehicle25 Nov 2025US 12,479,480 B2Crrc Qingdao Sifang Co., Ltd.
- System and method for traversing a non-moving rail switch using electromagnetic engines6 May 2025US 12,291,249 B2Hyperloop Technologies, Inc.
- System and method for rail scanning using electromagnetic engines11 Mar 2025US 12,246,762 B2Hyperloop Technologies, Inc.
- Computer-implemented method and control device for determining a real time steering angle11 Sep 2025US 2025/0282397 A1Traila AG
- Systems and methods for active damping of a platform of a vehicle14 Nov 2024US 2024/0375524 A1Transportation IP Holdings, LLC
- Adjustable torsion bar system and anti-roll method7 Nov 2024US 2024/0367699 A1Zhuzhou Times New Material Technology Co., Ltd.
- Method for improving curvilinear running speed of railway vehicle and small tilting system15 Aug 2024US 2024/0270291 A1Zhuzhou Times New Material Technology Co., Ltd.
- Vehicle vibration control system, vehicle vibration control method, and vehicle vibration control program2 Nov 2023US 2023/0347944 A1Mitsubishi Heavy Industries Engineering, Ltd.
Most cited
By later US patents
- System and method for the detection of vehicle rollover conditions256US 5,825,284 ARollover Operations, LLC · 1998
- Semi-active suspension system with control circuit having a direct control loop including an inverse model of the damper54US 6,112,866 AGEC Alsthom Transport SA · 2000
- Laterally damped railway car31US 4,526,109 AThe Budd Company · 1985
- Active vibration damping arrangement for transportation vehicles29US 5,560,589 ANorthrop Grumman Corporation · 1996
- Method and apparatus for controlling railway truck hunting and a railway car body supported thereby18US 5,662,046 AHansen Inc. · 1997