F16D 51/24
Fluid actuated
Official title: fluid actuated
F16D51/24 (Fluid actuated) appears on 113 US grants and 66 published applications in this corpus.
Search patents in F16D- Granted patents
- 113
- Published applications
- 66
- Assignees
- 59
- Inventors
- 182
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 2 |
| 2002 | 4 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 3 |
| 2016 | 1 | 2 |
| 2017 | 1 | 4 |
| 2018 | 8 | 10 |
| 2019 | 5 | 4 |
| 2020 | 6 | 8 |
| 2021 | 3 | 7 |
| 2022 | 1 | 7 |
| 2023 | 7 | 5 |
| 2024 | 4 | 4 |
| 2025 | 5 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drum brake19 May 2026US 12,631,234 B2Meritor Heavy Vehicle Braking Systems (UK) Limited
- Drum brake system with two tension springs13 Jan 2026US 12,523,265 B2Hl Mando Corporation
- Electric parking brake and vehicle having the same10 Jun 2025US 12,325,395 B2Hl Mando Corporation
- Brake systems, vehicles including such systems, methods of operating such systems, and methods of installing such systems3 Jun 2025US 12,319,250 B2
- Motor-driven drum brake system and method of controlling the same8 Apr 2025US 12,270,444 B2Hl Mando Corporation
- Electromechanically actuated drum brake16 Jul 2026US 2026/0201928 A1
- Method for operating a drum brake, control unit, and friction brake1 Jan 2026US 2026/0002569 A1
- Brake systems, vehicles including such systems, methods of operating such systems, and methods of installing such systems9 Jan 2025US 2025/0010828 A1
- Brake apparatus5 Dec 2024US 2024/0401652 A1Hl Mando Corporation
- Drum brake and braking member5 Sep 2024US 2024/0295247 A1Hitachi Astemo, Ltd.
Most cited
By later US patents
- Dual mode drum brake assembly21US 5,275,260 AKelsey-Hayes Company · 1994
- Parking and emergency brake operating mechanism for dual mode drum brake assemlby18US 5,720,367 AKelsey-Hayes Company · 1998
- Parking brake lever cable retainer16US 5,142,935 AAllied-Signal Inc. · 1992
- Leading/trailing drum brake having servo parking brake15US 5,070,968 AKelsey-Hayes Company · 1991
- Drum brake having duo mode14US 4,364,456 AThe Bendix Corporation · 1982