| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 10/05/1999 | US5961067 Method for reducing turboprop noise |
| 09/21/1999 | US5954479 Twin engine, coaxial, dual-propeller propulsion system |
| 09/15/1999 | EP0941201A1 Adjustable propeller unit which can be hydraulically reversed |
| 09/08/1999 | EP0939725A1 Counterweighted propeller control system |
| 09/01/1999 | CN2335889Y Imitation insect wing propeller |
| 08/26/1999 | DE19920560A1 Wind power plant with vertical rotor |
| 08/10/1999 | US5934609 Deformable propeller blade and shroud |
| 08/10/1999 | CA2007958C Airfoiled blade |
| 08/04/1999 | EP0933293A2 Method and device to reduce the noise produced by propeller aircraft |
| 08/03/1999 | US5931637 Propeller with variable rate of pitch change |
| 07/27/1999 | US5928719 Carrier gas stream containing submicron particles of 0.01-3.00 mu.m and blowing against surface of workpiece at an incident angle less than 40 degrees perpendicular deposit a high-density thin film or to etch |
| 07/27/1999 | US5927948 Propeller |
| 06/30/1999 | EP0925222A1 Apparatus and method for reducing turboprop noise |
| 06/30/1999 | CN1221379A Blade for ship propellers |
| 06/16/1999 | EP0783430A4 Contra-rotating rotor unit |
| 06/15/1999 | US5911559 Airfoiled blade for a propeller |
| 06/01/1999 | US5908522 Supplemental leading edge wear strip for a rotor blade |
| 05/27/1999 | DE19752369A1 Loop-shaped transverse drive body or split-wing loop for aircraft |
| 05/19/1999 | EP0916574A2 Propeller |
| 05/12/1999 | EP0866765B1 Rotor system having alternating length rotor blades for reducing blade-vortex interaction (bvi) noise |
| 04/29/1999 | WO1999020522A1 Variable pitch counterweighted propeller system with releasable hydraulic pitchlock |
| 04/27/1999 | US5897293 Counterweighted propeller control system |
| 04/15/1999 | WO1999017985A1 Adjustable propeller unit which can be hydraulically reversed |
| 04/15/1999 | DE19743739A1 Hydraulically reversible adjusting propeller unit for air, land or water vehicles |
| 04/06/1999 | US5890875 Blade apparatus |
| 04/01/1999 | WO1999015398A1 Ducted turbine |
| 03/25/1999 | WO1999014112A1 Airfoiled blade for a propeller |
| 03/18/1999 | DE19803947C1 Noise suppresser for propeller driven aircraft |
| 03/16/1999 | US5881972 Electroformed sheath and airfoiled component construction |
| 02/25/1999 | WO1999008928A1 Preloaded bearing assembly for aircraft propeller blade retention |
| 02/24/1999 | CN1209087A Shaft phase control mechanism |
| 02/18/1999 | WO1999007981A1 Heat resistant guide blade, leading blade edge and blade body |
| 02/18/1999 | WO1999007601A1 Flying vehicle with lift generators |
| 02/18/1999 | CA2300397A1 Flying vehicle with lift generators |
| 02/11/1999 | DE19734273A1 Hitzebeständige Leitschaufel Refractory vane |
| 02/03/1999 | EP0894066A1 Blade for ship propellers |
| 02/02/1999 | US5865599 System and process for direct blade angle measurement in propulsion systems |
| 02/02/1999 | CA1340376C Pale a faible signature radar |
| 01/27/1999 | EP0892735A1 Blade opening filler |
| 01/26/1999 | US5863181 Blade with shielding for enhanced protection against lightning, for rotocraft rotor |
| 01/07/1999 | WO1999000298A1 Blade profile for aircraft rotor and rotor comprising same |
| 12/30/1998 | EP0887259A2 Method and arrangement for fluidborne vehicle propulsion and drag reduction |
| 12/30/1998 | EP0887257A2 Airfoil with dynamic stall control by oscillatory forcing |
| 12/23/1998 | WO1998057848A1 Contra-rotating ducted impellers |
| 11/17/1998 | US5836743 Variable pitch counterweighted propeller system with releasable hydraulic pitchlock |
| 11/17/1998 | US5836549 For an aircraft |
| 11/05/1998 | WO1998029303A3 Aircraft with a fuselage substantially designed as an aerostatic lifting body |
| 10/22/1998 | WO1998030446A3 Variable pitch aircraft propeller |
| 10/20/1998 | US5823466 Propeller balancing method and apparatus |
| 10/13/1998 | US5820345 Split rotor shaft driven lift fan |
| 10/08/1998 | WO1998033071A3 Fuselage pitot-static tube |
| 09/30/1998 | EP0866765A1 Rotor system having alternating length rotor blades for reducing blade-vortex interaction (bvi) noise |
| 09/22/1998 | US5810560 Control system for non-linear control of a speed setting and a throttle valve in an aircraft engine |
| 09/22/1998 | US5810289 High velocity propeller |
| 09/22/1998 | US5810288 For fluid propulsion |
| 09/16/1998 | EP0864490A2 System and process for direct blade angle measurement in propulsion systems |
| 09/15/1998 | CA2015530C Aircraft engine propulsor blade pitch sensing |
| 09/09/1998 | EP0863072A2 Electroformed sheath and airfoiled component construction |
| 09/01/1998 | US5800129 Blade with shielding for enhanced protection against lightning, for rotorcraft rotor |
| 08/18/1998 | US5795200 Contra-rotating rotor unit |
| 08/18/1998 | US5795132 Variable pitch propeller |
| 08/11/1998 | US5791878 Airfoiled blade for cargo transport aircraft |
| 08/04/1998 | US5789678 Method for reducing noise and/or vibration from multiple rotating machines |
| 07/30/1998 | WO1998033071A2 Fuselage pitot-static tube |
| 07/29/1998 | CN2286721Y Air screw propeller or rotory wing |
| 07/21/1998 | US5782607 Replaceable ceramic blade insert |
| 07/16/1998 | WO1998030446A2 Variable pitch aircraft propeller |
| 07/16/1998 | CA2277871A1 Variable pitch aircraft propeller |
| 07/09/1998 | WO1998029303A2 Aircraft with a fuselage substantially designed as an aerostatic lifting body |
| 07/09/1998 | DE19700182A1 Luftfahrzeug mit einem im wesentlichen als aerostatischem Auftriebskörper ausgebildeten Rumpf Aircraft with a trained as aerostatic lift body essentially Hull |
| 07/09/1998 | CA2276876A1 Aircraft with a fuselage substantially designed as an aerostatic liftin g body |
| 07/08/1998 | CN1186705A Portable high-efficiency and high-multiple foam generator |
| 07/08/1998 | CN1186703A High-efficiency and high-multiple foam generator |
| 06/24/1998 | CN1185399A Blade paddle with swept-back wing tip for plane rotor wing |
| 06/18/1998 | WO1998025818A1 A wing or the like |
| 06/17/1998 | CN2284082Y High effective and high multiple foam generator |
| 05/28/1998 | WO1998022340A1 Counterweighted propeller control system |
| 05/27/1998 | EP0843635A1 A bearing and a method of disassembling such a bearing |
| 05/27/1998 | EP0843634A1 Bearing preload |
| 05/20/1998 | EP0842846A1 Rotorcraft rotor blade with sweepback tip |
| 05/06/1998 | EP0839104A1 Torque tube/spar assembly for variable diameter helicopter rotors |
| 04/28/1998 | US5743489 Aircraft with two alternatingly operated propellers of different radius |
| 04/08/1998 | EP0834030A1 Ring seal |
| 04/07/1998 | US5735670 Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise |
| 03/19/1998 | WO1998010984A1 Apparatus and method for reducing turboprop noise |
| 03/19/1998 | CA2264649A1 Apparatus and method for reducing turboprop noise |
| 03/17/1998 | US5727381 Duct flow control system |
| 02/26/1998 | DE3821588C1 Flügelblatt mit schwachem Radarecho An airfoil with a weak radar echo |
| 02/04/1998 | EP0822137A2 Propeller blade root bearing assembly |
| 02/03/1998 | US5715162 Correlative filter for a synchrophaser |
| 12/30/1997 | US5702233 Blade opening filler |
| 12/23/1997 | US5700743 Structural component having protective coating comprising adhesion-promoting layer of plastic matrix containing glass fibers, electrically insulating baked inorganic lacquer layer, electrically conducting covering layer |
| 12/11/1997 | DE19622834A1 Propeller for use on ship or aeroplane |
| 12/10/1997 | EP0586511B1 Propulsive thrust ring system |
| 11/27/1997 | WO1997044239A1 Torque tube/spar assembly for variable diameter helicopter rotors |
| 11/06/1997 | WO1997041030A1 Blade opening filler |
| 11/05/1997 | EP0805107A2 Propeller |
| 11/05/1997 | CN1164212A Contra-rotating rotor unit |
| 10/23/1997 | WO1997038897A1 Blade for ship propellers |
| 10/23/1997 | DE19615046A1 Electrically reversible adjustment propeller unit for air or land or water vehicle |