B64C 27/64
Using fluid pressure
Official title: using fluid pressure, e.g. having fluid power amplification
B64C27/64 (Using fluid pressure) appears on 87 US grants and 96 published applications in this corpus.
Search patents in B64C- Granted patents
- 87
- Published applications
- 96
- Assignees
- 39
- Inventors
- 163
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 2 | 6 |
| 2015 | 4 | 9 |
| 2016 | 6 | 10 |
| 2017 | 12 | 7 |
| 2018 | 3 | 11 |
| 2019 | 11 | 8 |
| 2020 | 7 | 3 |
| 2021 | 4 | 8 |
| 2022 | 6 | 5 |
| 2023 | 6 | 7 |
| 2024 | 7 | 8 |
| 2025 | 9 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Propulsor external hydraulic control system14 Apr 2026US 12,600,469 B2Lockheed Martin Corporation
- System for transmitting commands to a hydraulic servo actuator13 Jan 2026US 12,522,348 B2Safran Electronics & Defense
- Hub feed oil system11 Nov 2025US 12,467,438 B2Archer Aviation Inc.
- Single boost hydraulic control system with magnetorheological actuator21 Oct 2025US 12,448,119 B2Textron Innovations Inc.
- Control module for hydraulic system14 Oct 2025US 12,442,395 B2Microtecnica S.R.L.
- System for transmitting commands to a plurality of hydraulic servo-actuators23 Apr 2026US 2026/0109453 A1
- Single boost hydraulic control system with magnetorheological actuator15 Jan 2026US 2026/0015082 A1Textron Innovations Inc.
- Linear actuating device and associated aircraft rotor test bench13 Nov 2025US 2025/0346368 A1Airbus Helicopters
- Axially Aligned Triplex Linear Hydraulic Actuators9 Oct 2025US 2025/0313333 A1Textron Innovations Inc.
- Propulsor external hydraulic control system6 Mar 2025US 2025/0074583 A1Lockheed Martin Corporation
Most cited
By later US patents
- Rotor hub mounted actuator for controlling a blade on a rotorcraft35US 6,354,536 B1Sikorsky Aircraft Corporation · 2002
- Redundant servoactuator unit particularly to operate the flight control mechanisms in aircraft23US 4,699,043 AMagnaghi Oleodinamica S.p.A. · 1987
- Primary flight controls8US 8,888,036 B2Airbus Helicopters · 2014
- Autogyro6US 10,526,084 B2AutoGyro AG · 2020
- Device for operating a controlled member on a rotary-wing aircraft, particularly a helicopter6US 6,772,054 B1Eurocopter · 2004