| Patents for B64D 35 - Transmitting power from power plant to propellers or rotors; Arrangements of transmissions (681) |
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| 03/04/2014 | US8661781 Counter rotating fan design and variable blade row spacing optimization for low environmental impact |
| 02/20/2014 | WO2013181722A3 Road-and-air transport vehicle |
| 02/19/2014 | CN203439257U Unmanned helicopter |
| 02/06/2014 | US20140034781 System and Method of Augmenting Power in a Rotorcraft |
| 01/31/2014 | CA2821104A1 System and method of augmenting power in a rotorcraft |
| 01/29/2014 | CN102333694B Device with counter-rotating propellers having a means for changing the pitch of the propellers |
| 01/25/2014 | CA2821180A1 Direct drive rotation device for passively moving fluid |
| 01/25/2014 | CA2821120A1 Direct drive rotation device for passively moving fluid |
| 01/16/2014 | WO2014009620A1 Method and architecture for the optimized transfer of power between an auxiliary power motor and the main engines of a helicopter |
| 01/16/2014 | CA2874962A1 Method and architecture for the optimized transfer of power between an auxiliary power motor and the main engines of a helicopter |
| 01/09/2014 | US20140010652 Hybrid powertrain system |
| 01/09/2014 | CA2820254A1 Hybrid powertrain system |
| 12/28/2013 | CA2817768A1 Coupling device by abutment for a supercritical drive shaft, specifically for driving the rotor on a rotorcraft |
| 12/25/2013 | CN102556335B Flying-wing layout aircraft provided with cycloidal propellers |
| 12/19/2013 | US20130334360 Clutch with pressure sustaining system |
| 12/15/2013 | CA2808026A1 Clutch with pressure sustaining system |
| 11/26/2013 | US8591136 Non-rotating universal joint for a helicopter drive unit |
| 11/26/2013 | US8590833 Constant-velocity drive system for gimbaled rotor hubs |
| 11/26/2013 | US8590829 System, floating unit and method for elevating payloads |
| 11/20/2013 | CN203294316U Power input rear shaft sleeve adjusting device |
| 11/06/2013 | CN103382981A A single-stage high-ratio reducer gearbox of an aeronautical engine |
| 11/06/2013 | CN102417034B Transverse rigid rotor blade helicopter |
| 10/30/2013 | CN203255354U Plant-protecting unmanned helicopter with double-layer propellers |
| 10/29/2013 | US8567713 Lift fan clutch |
| 10/23/2013 | CN103359292A Ram air turbine stow abort assembly |
| 10/17/2013 | DE102012007822A1 Gearbox device for airplane thruster, has elastomer elements arranged in rotation direction of rotary elements between projections of one set of rotary elements and projections of other set of rotary elements of auxiliary gearbox |
| 10/01/2013 | CA2562290C Reversible gas turbine gearbox |
| 09/18/2013 | CN203199181U Aluminum foil adjustable pad for helicopter transmission system |
| 09/05/2013 | US20130231208 Propulsion and motion-transmission assembly, in particular for a rotary-wing aircraft |
| 09/05/2013 | US20130227950 Hybrid assembly for an aircraft |
| 08/21/2013 | CA2805485A1 Coaxial counter-rotating rotor system |
| 08/21/2013 | CA2803858A1 Rotary-wing aircraft equipped with a rear rotor and process to optimise the operation of a rear rotor |
| 08/06/2013 | CA2649087C Torque transmission for an aircraft engine |
| 07/31/2013 | CN203094440U Non-coaxial multi-rotor wing air vehicle |
| 07/18/2013 | US20130181087 Clutch system for rotary-wing aircraft with secondary thrust system |
| 07/17/2013 | EP2615033A2 Clutch system for rotary-wing aircraft with secondary thrust system |
| 07/17/2013 | CN103204237A Aerial propelling device suitable for amphibious unmanned aerial vehicle |
| 07/17/2013 | CA2802060A1 Gas turbine engine with pylon mounted accessory drive |
| 07/11/2013 | US20130175384 Bearing Restraint for Rotor Systems |
| 07/10/2013 | CN103192990A Vertical/short take-off and landing flying wing layout aircraft |
| 07/03/2013 | CN203032938U Motor power transmission system for transport helicopter |
| 07/02/2013 | CA2559528C Damper support assembly for a supercritical drive shaft |
| 06/28/2013 | CA2794077A1 Electrical powered tail rotor of a helicopter |
| 06/27/2013 | WO2013093447A1 Personal propulsion apparatus and method |
| 06/26/2013 | EP2605964A1 A propulsion and motion-transmission assembly, in particular for a rotary-wing aircraft |
| 06/26/2013 | EP2605963A1 A propulsion and motion-transmission assembly, in particular for a rotary-wing aircraft |
| 06/26/2013 | CN103171770A Engine power transmission system of transport helicopter |
| 06/25/2013 | US8469306 Purebred and hybrid electric VTOL tilt rotor aircraft |
| 06/19/2013 | CN103158880A Aerospace motor-driven helicopter |
| 06/18/2013 | US8464980 Power plant, a helicopter including such a power plant, and a method implemented by said power plant |
| 06/12/2013 | CN101535128B Multiple drive-path transmission with torque-splitting differential mechanism |
| 06/11/2013 | CA2718682C Planetary gear reduction system |
| 06/09/2013 | CA2798339A1 Preventing rotation of a fixed ring of a swashplate |
| 06/05/2013 | CN102285453B Stepless amplitude-modulating driving mechanism for flapping wing |
| 05/30/2013 | WO2013030489A3 Aircraft comprising a distributed electric power unit with free wheels |
| 05/30/2013 | US20130134264 Electric Motor Powered Rotor Drive for Slowed Rotor Winged Aircraft |
| 05/28/2013 | CA2554264C Reversible driving apparatus for pcu pumps |
| 05/23/2013 | WO2013074603A1 Centrifugal de-clutch |
| 05/23/2013 | US20130126669 Electric drive device for an aircraft |
| 05/23/2013 | CA2837668A1 Centrifugal de-clutch |
| 05/22/2013 | CN103112588A High-energy-saving flying saucer type multi-purpose aerospace craft |
| 05/15/2013 | CN103101621A Parafoil aircraft applicable to cylindrical space loading |
| 05/15/2013 | CA2795366A1 Anti-vibration suspension system for a retaining rod for a power gearbox in an aircraft, anti-vibration device, and aircraft |
| 05/08/2013 | CN103097243A A propulsion and motion-transmission assembly, in particular for a rotary-wing aircraft |
| 05/08/2013 | CN103097242A A propulsion and motion-transmission assembly, in particular for a rotary-wing aircraft |
| 05/08/2013 | CN103085977A Aluminum foil adjustable pad used for helicopter transmission system |
| 05/01/2013 | CN102167159B Bevel gear train flapping-wing aircraft |
| 05/01/2013 | CN101973396B Rapid helicopter |
| 04/24/2013 | CN103062372A Dry running transmission system of civil helicopter |
| 04/24/2013 | CA2792379A1 Hybrid overrunning clutch assembly and method of making same |
| 04/23/2013 | US8424416 Layshaft generator |
| 04/18/2013 | US20130092789 Hybrid drive for helicopters |
| 04/04/2013 | US20130082135 Hybrid aircraft having a rotary wing |
| 04/03/2013 | CN103010470A Feathering control device of turbo-propeller aircraft engine |
| 04/03/2013 | CN103010469A Vector power transmission device |
| 03/26/2013 | US8402740 Aircraft propulsion unit in multi-fan design |
| 03/21/2013 | US20130068878 Self-Healing Reservoir Coating System |
| 03/21/2013 | DE102011053787A1 Propeller device for producing fluid flow, and for use in drive unit for driving vehicle or vehicle model, has propeller, which is arranged coaxial to rotary axis, and is coupled to rotor by using power-transferring coupling |
| 03/07/2013 | WO2013030489A2 Aircraft comprising a distributed electric power unit with free wheels |
| 03/07/2013 | CA2847526A1 Aircraft comprising a distributed electric power unit with free wheels |
| 03/06/2013 | CN102951290A Non-co-axial multi-rotor aircraft and attitude control method thereof |
| 02/20/2013 | CN102935893A Feathering parking protection method and feathering parking protection device of engine |
| 02/19/2013 | US8376269 Hydraulic valve, a hybrid helicopter provided with such a hydraulic valve, and a method implemented by the hydraulic valve |
| 02/19/2013 | CA2667607C Multiple drive-path transmission with torque-splitting differential mechanism |
| 02/19/2013 | CA2573206C Aircraft propulsion system |
| 01/31/2013 | WO2013015295A1 Vertical takeoff and landing aircraft |
| 01/30/2013 | CN102900813A Planetary gear train and corresponding production method |
| 01/30/2013 | CN102897325A Aircraft taxi system including drive chain |
| 01/16/2013 | CN202674179U Combined power-driven box of helicopter |
| 01/08/2013 | CA2657252C Gas turbine aircraft engine with power variability |
| 12/25/2012 | US8336815 Constant-velocity drive system for gimbaled rotor hubs |
| 12/19/2012 | EP2534394A1 Epicyclical gear transmission with improved load carrying capability |
| 12/19/2012 | CN202609090U Airplane with multi-purpose engine |
| 11/29/2012 | DE102006019756B4 Ummanteltes Schaufelwerk mit hybridem kolbenhydraulischem Antrieb Sheathed blade work with hybrid piston hydraulic drive |
| 11/21/2012 | CN102079387B Gear-driven propeller of helicopter |
| 11/14/2012 | CN102774503A Two guides of centripetal force |
| 11/07/2012 | CN101260917B Aircraft with modified gear tooth profile and producing method thereof |
| 11/06/2012 | US8303208 Locknut assembly for a coaxial shaft |
| 10/26/2012 | WO2012145448A1 High speed gear sized and configured to reduce windage loss |
| 10/24/2012 | CN102753858A Epicyclical gear transmission with improved load carrying capability |