B61F 5/10
Incorporating fluid springs
Official title: incorporating fluid springs
B61F5/10 (Incorporating fluid springs) appears on 87 US grants and 81 published applications in this corpus.
Search patents in B61F- Granted patents
- 87
- Published applications
- 81
- Assignees
- 55
- Inventors
- 224
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 0 | 2 |
| 2013 | 1 | 3 |
| 2014 | 3 | 7 |
| 2015 | 4 | 5 |
| 2016 | 5 | 10 |
| 2017 | 6 | 10 |
| 2018 | 12 | 7 |
| 2019 | 10 | 12 |
| 2020 | 6 | 5 |
| 2021 | 6 | 5 |
| 2022 | 5 | 3 |
| 2023 | 4 | 2 |
| 2024 | 2 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for recovery of compressed air released by air suspensions of at least one railway vehicle or train31 Mar 2026US 12,589,780 B2FAIVELEY TRANSPORT ITALIA S. p. A.
- Tilting system and tilting control method for railway vehicle and railway vehicle25 Nov 2025US 12,479,480 B2Crrc Qingdao Sifang Co., Ltd.
- Bogie for a rail vehicle and rail vehicle with a bogie10 Jun 2025US 12,325,455 B2Stadler Rail AG
- Failure determination device, brake control device, and failure determination method4 Mar 2025US 12,240,509 B2Mitsubishi Electric Corporation
- Maglev vehicle and suspension frame assembly thereof24 Dec 2024US 12,172,680 B2Crrc Tangshan Co., Ltd.
- Narrow vehicle body high-speed maglev train and suspension frame therefor6 Aug 2026US 2026/0225626 A1Crrc Qingdao Sifang Co., Ltd.
- Rail Vehicle with Pneumatic Suspension1 Jan 2026US 2026/0001576 A1Siemens Mobility Austria GmbH
- Electric control intelligent leveling valve for vehicle and corresponding vehicle27 Feb 2025US 2025/0065930 A1
- A bogie and a vehicle with such bogie21 Nov 2024US 2024/0383508 A1Vlr Technologies Limited
- Bogie with improved secondary suspension system, and railway vehicle comprising such bogie18 Apr 2024US 2024/0124034 A1ALSTOM Holdings
Most cited
By later US patents
- Bogie vehicle with electrohydraulic brakes and hydropneumatic suspension103US 5,074,624 ACompagnie Industrielle de Materiel de Transport · 1991
- Height and inclination control of a wagon body38US 5,769,400 AKnorr-Bremse GmbH · 1998
- Air spring18US 6,257,561 B1Kawasaki Jukogyu Kabushiki Kaisha · 2001
- Truck for high speed rail cars15US 4,278,030 AWaggon Union GmbH · 1981
- Pneumatic railway car suspension13US 3,941,061 AWegmann & Co. GmbH · 1976