| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 04/04/2001 | EP1088755A2 Prop rotor hub |
| 04/01/2001 | CA2320629A1 Prop rotor hub |
| 03/20/2001 | US6203269 Centrifugal air flow control |
| 03/14/2001 | CN1287082A Helicopter thrust by airscrew |
| 03/06/2001 | US6196801 Adjustable propeller unit which can be hydraulically reversed |
| 03/06/2001 | US6196797 Electronic self-powered propeller governor |
| 03/01/2001 | WO2001014206A1 Quick disconnect bracket system for propeller deicer |
| 02/21/2001 | EP1076590A1 Propeller, especially for model airplanes |
| 02/21/2001 | CN2420228Y High performance propeller |
| 02/14/2001 | CN1283572A Wheel-type effecient propeller |
| 02/07/2001 | EP1074469A1 Counter propeller propulsion unit |
| 02/07/2001 | EP1073583A1 Control system for blades for a variable pitch propeller |
| 01/30/2001 | US6181235 Rotary apparatus |
| 01/25/2001 | DE19931035A1 Rotor mit gespaltenem Rotorblatt Rotor with a split blade |
| 01/11/2001 | WO2001002742A2 Rotor with a split rotor blade |
| 01/02/2001 | US6168384 Propeller blade configuration |
| 12/26/2000 | US6164919 Propeller and impeller blade configuration |
| 12/12/2000 | US6158960 Propeller hub with self-adjusting pitch mechanism |
| 12/12/2000 | US6158953 Wind turbine with variable position blades |
| 12/05/2000 | US6155784 Variable pitch aircraft propeller |
| 11/21/2000 | US6149163 Ring seal assembly |
| 11/16/2000 | WO2000068569A1 Wind power facility with a vertical rotor |
| 11/09/2000 | WO2000066429A1 Bolted-on propeller blade |
| 11/09/2000 | WO2000066428A1 Pressure relief device for a propeller hub |
| 11/02/2000 | DE19919626A1 Aircraft with combined aerofoils and control surfaces has annulus on each side of fuselage and formed by aerofoils and control surfaces together with side walls of fuselage, and annulus accommodates propeller |
| 10/31/2000 | US6139259 Low noise permeable airfoil |
| 10/31/2000 | US6138948 Bearing and method of disassembling such a bearing |
| 10/24/2000 | US6137082 Multiple piece propeller deicing system brush block housings |
| 09/27/2000 | CN2398202Y Propeller type flying saucer |
| 09/26/2000 | US6122984 Shaft phase control mechanism |
| 09/20/2000 | CN1266798A Efficient energy saver changing slide advancing to rotation advancing |
| 09/12/2000 | US6116856 Bi-directional fan having asymmetric, reversible blades |
| 09/08/2000 | WO2000051700A1 Propeller, especially for model airplanes |
| 08/31/2000 | WO2000050779A1 Centrifugal air flow control |
| 08/22/2000 | US6106232 Propeller structure |
| 08/17/2000 | WO2000047469A1 Duplex coned propellers for airship propulsion/control |
| 08/15/2000 | US6102662 Blade with shielding for enhanced protection against lighting, for rotorcraft rotor |
| 08/08/2000 | US6099256 Three dimensional figure eight propeller/impeller blade apparatus |
| 08/02/2000 | EP1024081A2 Blade root for propellers and rotor blades |
| 08/02/2000 | EP1023219A1 Variable pitch counterweighted propeller system with releasable hydraulic pitchlock |
| 07/26/2000 | EP0843635B1 A bearing and a method of disassembling such a bearing |
| 07/20/2000 | WO1999067507A9 Device and method employing a turbine for contributing thrust to a propeller on a spinner |
| 07/06/2000 | DE19856361C1 Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation |
| 07/05/2000 | EP1015306A1 Ducted turbine |
| 07/05/2000 | EP1015305A1 Airfoiled blade for a propeller |
| 07/05/2000 | CN1258620A Insect wing imitating propeller |
| 07/04/2000 | US6082670 Method and arrangement for fluidborne vehicle propulsion and drag reduction |
| 06/29/2000 | WO2000037312A1 A drive system for a variable diameter tilt rotor |
| 06/29/2000 | WO2000037311A1 Variable diameter rotor blade actuation system |
| 06/20/2000 | US6077040 Control system for blades for a variable pitch propeller |
| 06/14/2000 | CN1053488C Extruded aluminum fan blade |
| 05/25/2000 | DE19903550C1 Blade root, for a fiber-reinforced plastic propeller or rotor blade of an aeroplane, ground effect vehicle, wind power generator or fan, has a blade sleeve with a profiled inner face bonded by adhesive to a blade body |
| 05/24/2000 | EP1001899A1 Preloaded bearing assembly for aircraft propeller blade retention |
| 05/23/2000 | US6065933 Folding rotor blade/propeller drive and pitch control actuator |
| 05/17/2000 | EP0999977A1 Flying vehicle with lift generators |
| 05/17/2000 | EP0651713B1 Variable diameter rotor drive system |
| 05/17/2000 | CN1253532A Blade profile for aircraft rotor and rotor comprising same |
| 05/09/2000 | US6059528 Electronic propeller control system |
| 04/27/2000 | WO1999061314A9 Multiple piece propeller deicing system brush block housings |
| 04/27/2000 | WO1997030813A9 Shaft phase control mechanism |
| 04/25/2000 | US6053700 Ducted turbine |
| 04/12/2000 | EP0991569A1 Blade profile for aircraft rotor and rotor comprising same |
| 04/06/2000 | WO2000018641A1 Load-bearing structure with reduced tip vortex |
| 04/06/2000 | CA2345334A1 Load-bearing structure with reduced tip vortex |
| 04/05/2000 | EP0777602B1 Propeller de-icing apparatus |
| 04/05/2000 | CN1249720A Aircraft with fuselage substantially designed as aerodynamic lifting body |
| 03/30/2000 | DE19909818A1 Adjustable pitch propeller, particularly for model aircraft |
| 03/30/2000 | DE19833869C1 Sectional mold for wind power rotor blade made of fiber-reinforced resin, produces blades of differing size and improved aerodynamic efficiency, avoiding cost of stocking one mold per blade |
| 03/29/2000 | CN1249037A Fuselage pilot-static tube and the aerodynamic profile of its strut |
| 03/23/2000 | WO2000015949A1 Apparatus for adjusting angle of blade of rotating body |
| 03/22/2000 | EP0834030B1 Ring seal |
| 03/09/2000 | WO1999061314A3 Multiple piece propeller deicing system brush block housings |
| 03/07/2000 | US6033186 Frequency tuned hybrid blade |
| 03/02/2000 | WO2000011322A1 Multipurpose propeller with vectored impulses |
| 02/29/2000 | US6030177 Drive system for a variable diameter tilt rotor |
| 02/08/2000 | CA2127077C Extruded aluminum fan blade |
| 02/03/2000 | DE19919627A1 Procedure for creating thrust in aerofoils has second aerofoil located in or close to slipstream of first aerofoil to produce second flow velocity with different direction to first air flow velocity |
| 02/01/2000 | US6019578 Variable diameter rotor blade actuation system |
| 01/18/2000 | US6015264 Preloaded retention assembly for aircraft propeller blade retention |
| 01/18/2000 | CA2134747C Variable diameter rotor having an offset twist |
| 01/13/2000 | WO2000001577A2 Variable-pitch propeller hydraulic controller |
| 01/12/2000 | CN1240745A Method for increasing drive force of aircraft by 29% |
| 01/05/2000 | CN2356941Y Changeable length propeller blade for helicopter |
| 12/29/1999 | WO1999067507A1 Device and method employing a turbine for contributing thrust to a propeller on a spinner |
| 12/29/1999 | CA2336021A1 Device and method employing a turbine for contributing thrust to a propeller on a spinner |
| 12/23/1999 | WO1999065766A1 Rotor or propeller with blade folding and pitch control devices |
| 12/23/1999 | CA2334463A1 Rotor or propeller with blade folding and pitch control devices |
| 12/15/1999 | EP0963556A2 Fuselage pitot-static tube and the aerodynamic profile of its strut |
| 12/14/1999 | US6000911 Blade with swept-back tip for the rotary wings of an aircraft |
| 12/09/1999 | WO1999056912A8 Control system for blades for a variable pitch propeller |
| 12/07/1999 | US5997250 Method and apparatus for controlling pitch of an aircraft propeller |
| 12/02/1999 | WO1999061314A2 Multiple piece propeller deicing system brush block housings |
| 11/11/1999 | WO1999056912A1 Control system for blades for a variable pitch propeller |
| 11/11/1999 | WO1998029303A8 Aircraft with a fuselage substantially designed as an aerostatic lifting body |
| 11/10/1999 | EP0954401A1 Shaft phase control mechanism |
| 10/26/1999 | US5971322 Propeller propulsion unit for aircrafts in general |
| 10/21/1999 | WO1999052770A1 Ring-shrouded propeller |
| 10/14/1999 | WO1999051493A1 Counter propeller propulsion unit |
| 10/13/1999 | EP0948441A2 Aircraft with a fuselage substantially designed as an aerostatic lifting body |
| 10/07/1999 | WO1998029303B1 Aircraft with a fuselage substantially designed as an aerostatic lifting body |