B64C 13/42
Having duplication or stand-by provisions
Official title: having duplication or stand-by provisions
B64C13/42 (Having duplication or stand-by provisions) appears on 125 US grants and 113 published applications in this corpus.
Search patents in B64C- Granted patents
- 125
- Published applications
- 113
- Assignees
- 61
- Inventors
- 226
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 3 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 1 | 1 |
| 2009 | 3 | 2 |
| 2010 | 0 | 1 |
| 2011 | 5 | 5 |
| 2012 | 2 | 7 |
| 2013 | 8 | 2 |
| 2014 | 4 | 5 |
| 2015 | 3 | 3 |
| 2016 | 3 | 2 |
| 2017 | 2 | 8 |
| 2018 | 3 | 15 |
| 2019 | 11 | 12 |
| 2020 | 8 | 8 |
| 2021 | 14 | 8 |
| 2022 | 7 | 7 |
| 2023 | 6 | 3 |
| 2024 | 5 | 1 |
| 2025 | 6 | 10 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic force fight mitigation7 Oct 2025US 12,435,740 B2Woodward, Inc.
- Hydraulic drag brake23 Sep 2025US 12,420,913 B2Hamilton Sundstrand Corporation
- Method and apparatus for generating hydraulic power in an aircraft19 Aug 2025US 12,392,360 B2Airbus Operations GmbH
- Dual-system hydraulic actuator12 Aug 2025US 12,385,507 B2Parker-Hannifin Corporation
- Fluid system with multi-mode transfer valve1 Jul 2025US 12,345,280 B2Rtx Corporation
- Actuator system, aircraft, and method6 Aug 2026US 2026/0226925 A1Liebherr-Aerospace Lindenberg GmbH
- Rotorcraft fly-by-wire flight control system11 Jun 2026US 2026/0159230 A1Honeywell International Inc.
- Transfer valve with dual authority control porting7 May 2026US 2026/0126060 A1Hamilton Sundstrand Corporation
- Hydraulic force fight mitigation8 Jan 2026US 2026/0009408 A1Woodward, Inc.
- Axially Aligned Triplex Linear Hydraulic Actuators9 Oct 2025US 2025/0313333 A1Textron Innovations Inc.
Most cited
By later US patents
- Dynamic activation of pumps of a fluid power system166US 10,040,541 B2The Boeing Company · 2018
- Fault tolerant actuation system for flight control actuators121US 5,806,805 AThe Boeing Company · 1998
- Aircraft control surface drive system and associated methods52US 6,799,739 B1The Boeing Company · 2004
- System for servo-controlling an aircraft flight control member43US 5,600,220 ALucas France S.A. · 1997
- Non-jamming actuator system36US 4,876,906 ASundstrand Corporation · 1989