B64D 35/08
Transmitting power from power plants to propellers or rotors: characterised by the
Official title: characterised by the transmission being driven by a plurality of power plants (for hybrid-electric power plants B64D35/022)
B64D35/08 (Transmitting power from power plants to propellers or rotors: characterised by the) appears on 162 US grants and 181 published applications in this corpus.
Search patents in B64D- Granted patents
- 162
- Published applications
- 181
- Assignees
- 72
- Inventors
- 350
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
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| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 3 |
| 2014 | 0 | 2 |
| 2015 | 2 | 8 |
| 2016 | 4 | 4 |
| 2017 | 3 | 13 |
| 2018 | 13 | 18 |
| 2019 | 9 | 13 |
| 2020 | 15 | 13 |
| 2021 | 7 | 16 |
| 2022 | 19 | 17 |
| 2023 | 22 | 23 |
| 2024 | 22 | 16 |
| 2025 | 21 | 16 |
| 2026 | 14 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hybrid aircraft power plant and method of operation18 Aug 2026US 12,709,399 B2Pratt & Whitney Canada Corp.
- Rotor position control system11 Aug 2026US 12,703,481 B2Textron Innovations Inc.
- Combined offset gearbox arrangement for hybrid-electric powerplant4 Aug 2026US 12,698,090 B1Pratt & Whitney Canada Corp.
- Aircraft propulsion assembly2 Jun 2026US 12,643,671 B2Safran Transmission Systems
- Aircraft power plant with electric motor powered by fuel cell19 May 2026US 12,630,295 B2Pratt & Whitney Canada Corp.
- Method and system for assisting with the piloting of a rotary wing aircraft in a fuel economy mode30 Jul 2026US 2026/0217376 A1Safran Helicopter Engines
- Electric machine and accessory gearbox arrangement for aircraft propulsion system9 Jul 2026US 2026/0192928 A1Rtx Corporation
- Transmission device comprising at least one compact decoupling system and at least one control system integrated in said decoupling system9 Jul 2026US 2026/0194139 A1Airbus Operations GmbH
- System for mimicking the behavior of a multi-engine aircraft with a single engine aircraft25 Jun 2026US 2026/0175968 A1Daher Aerospace
- Rotorcraft with a flight control system for improving rotorcraft control upon occurrence of an in-flight shutdown in an asymmetric flight regime mode18 Jun 2026US 2026/0167328 A1Airbus Helicopters
Most cited
By later US patents
- Multiple engine drive for single output shaft and combining gearbox therefor69US 4,829,850 ASoloy Dual Pac, Inc. · 1989
- Convertiplane65US 6,367,736 B1Agusta S.p.A. · 2002
- Tilt rotor aircraft with fixed engine arrangement56US 8,602,347 B2Textron Innovations Inc. · 2013
- Architecture of a multiple-engine helicopter propulsion system, and corresponding helicopter36US 10,766,629 B2Safran Helicopter Engines · 2020
- Tilt rotor aircraft with fixed engine arrangement28US 9,199,732 B2Textron Innovations Inc. · 2015