| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 08/31/1993 | CA1321735C Propeller blade assembly |
| 08/17/1993 | CA1321382C Profiles for air shrouded propeller blade |
| 08/12/1993 | DE4203205A1 Location for propeller blade made of fibre cpd. - has loop rail with bearing shaft extending through propeller blade root with loop rail extending around bearing shaft |
| 07/27/1993 | CA1320715C Airfoiled blade |
| 07/27/1993 | CA1320714C Aircraft propeller blade retention |
| 07/27/1993 | CA1320713C Airfoiled blade |
| 07/22/1993 | WO1993013983A1 Engine arrangement |
| 07/06/1993 | US5224833 Fan for a gas turbine engine air intake |
| 07/06/1993 | US5224831 Fan blade protection system |
| 06/30/1993 | EP0549172A1 Design and processing method for manufacturing hollow airfoils (three-piece concept) |
| 06/30/1993 | EP0541718A4 Plastic fan blade for industrial cooling towers and method of making same |
| 06/29/1993 | US5222297 Composite blade manufacture |
| 06/23/1993 | CN2136805Y 不锈钢螺旋桨 Stainless steel propeller |
| 06/22/1993 | US5221188 Blade device for turbo-engines |
| 06/22/1993 | US5221185 Method and apparatus for synchronizing rotating machinery to reduce noise |
| 06/22/1993 | CA1319357C Counterrotating aircraft propulsor blades |
| 06/09/1993 | EP0545750A1 Multiple blade variable pitch rotor, in particular for rear antitorque apparatus of a rotorcraft |
| 06/08/1993 | US5217349 System and method for suppressing noise produced by rotors |
| 05/25/1993 | US5213471 Propeller pitch control |
| 05/19/1993 | EP0541718A1 Plastic fan blade for industrial cooling towers and method of making same. |
| 05/18/1993 | US5211539 Apparatus for indicating the pitch of turbofan blades |
| 05/11/1993 | US5209643 Tapered propeller blade design |
| 05/11/1993 | US5209642 Modified optimum pitch propeller |
| 05/11/1993 | US5209640 Pitch control apparatus for variable pitch propeller |
| 04/29/1993 | WO1993008017A1 Composite blade manufacture |
| 04/27/1993 | US5205714 Aircraft fan blade damping apparatus |
| 04/27/1993 | US5205712 Variable pitch fan gas turbine engine |
| 04/06/1993 | US5199850 Pitch stop assembly for variable pitch propulsor |
| 04/01/1993 | WO1993006539A1 Method and apparatus for determining the phase difference between two input signals |
| 04/01/1993 | WO1993006538A1 Method for matching engine torques for multiple engine aircraft |
| 04/01/1993 | WO1993006353A1 Propeller governor control for turboprop engines |
| 04/01/1993 | DE4201383C1 Light aircraft propeller rest position fixing mechanism - has two-armed lever with brake-block mounted on propeller shaft, and inserts retaining pin into notch in shaft when propeller drive is switched off |
| 03/30/1993 | USRE34207 Counterrotating aircraft propulsor blades |
| 03/30/1993 | US5197855 Engine exhaust/blade interaction noise suppression |
| 03/30/1993 | CA1315257C Shrouded rotor blade having helicopter tail reduced diameter |
| 03/09/1993 | US5192191 Propeller vane structure for marine propulsion unit |
| 03/04/1993 | WO1993003960A1 Blade pitch change control system |
| 03/02/1993 | US5190441 Noise reduction in aircraft propellers |
| 02/18/1993 | WO1993003258A1 Pitch stop assembly for variable pitch propulsor |
| 02/17/1993 | CN1068998A Transmission differential mechanism for coaxial rotor flying vehicle |
| 02/16/1993 | US5186609 Contrarotating propeller type propulsion system |
| 02/16/1993 | US5186608 Hydraulic low pitch switch for propeller pitch change system |
| 02/04/1993 | WO1993001976A1 Lift generating method and apparatus for aircraft |
| 02/04/1993 | DE4125836A1 Pitch change mechanism for variable pitch propeller - has oblique faced disc to convert rotary motion to axial motion |
| 02/03/1993 | EP0526057A1 Layup of composite fan blades/vanes |
| 02/02/1993 | US5183387 Fault-tolerant apparatus for controlling blade pitch |
| 01/23/1993 | CA2070522A1 Layup of composite fan blades/vanes |
| 01/14/1993 | DE4120908A1 Wind energy extraction aerofoil - has trough-shaped front sheet and flatter rear sheet leading into trough at front end |
| 01/13/1993 | EP0522035A1 Propeller with twistable blades. |
| 12/30/1992 | CN1019657B Aircraft propeller blade retention device |
| 12/29/1992 | US5174718 Blade pitch change control system |
| 12/29/1992 | US5174716 Pitch change mechanism |
| 12/23/1992 | WO1992022459A1 Propulsive thrust ring system |
| 12/17/1992 | DE4119810A1 Aircraft propeller with foldable blades - has variable blade adjustment angle with link between outer linkage positions and propeller drive shaft |
| 12/10/1992 | WO1992021515A1 A fibre reinforced component and a method of manufacturing such a component |
| 12/08/1992 | US5170365 Propeller speed and phase sensor |
| 12/01/1992 | US5167489 Forward swept rotor blade |
| 12/01/1992 | US5167384 Increasing lift on helicopter rotor blades and aircraft propellers |
| 11/25/1992 | CN1019178B Blade of composite materials and its manufacturing process |
| 11/24/1992 | US5165856 Fan blade mount |
| 11/24/1992 | US5165240 Method for matching engine torques for multiple engine aircraft |
| 11/18/1992 | CN1066251A Rotor wing |
| 11/17/1992 | US5163817 Rotor blade retention |
| 11/10/1992 | US5161953 Aircraft propeller and blade element |
| 11/10/1992 | US5161952 Dual-plane blade construction for horizontal axis wind turbine rotors |
| 11/10/1992 | US5161948 Propulsor pitchlock and feather stop |
| 10/20/1992 | USRE34109 Propeller blade |
| 10/20/1992 | US5156648 Prop-fan pitch-change mechanism |
| 10/20/1992 | US5156527 Main helicopter rotor |
| 10/13/1992 | US5154580 Aircraft propulsion system |
| 10/06/1992 | US5152668 Pitch change mechanism for prop fans |
| 09/29/1992 | US5151014 Lightweight airfoil |
| 09/29/1992 | US5150855 Reducing vibrations in the cabin of an aircraft |
| 09/22/1992 | US5149251 For airplane engines |
| 09/22/1992 | CA1307673C Center fastened stationary intake cowling for jet engine and jet engine equipped with said cowling |
| 09/15/1992 | US5148402 Method for reducing aircraft cabin noise and vibration |
| 09/08/1992 | US5145320 Mass loaded composite rotor for vibro-acoustic application |
| 09/03/1992 | WO1992014646A1 Lightweight propulsor blade |
| 08/27/1992 | DE4203098A1 Propeller blade pitch control - is for motorised glider and has hydraulic system operated from cockpit controls |
| 08/25/1992 | US5141399 Pitch change control system |
| 08/20/1992 | WO1992013758A1 Flexible tailored elastic airfoil section |
| 08/20/1992 | DE4203045A1 Feathering control for motorised glider - has sprung thrust plate about propeller hub to move axially via bearing thruster |
| 08/18/1992 | US5139391 Rotary machine with non-positive displacement usable as a pump, compressor, propulsor, generator or drive turbine |
| 08/12/1992 | CN1017792B Airfoiled blade |
| 07/28/1992 | CA1305771C Aircraft propeller speed control |
| 07/22/1992 | CN1062876A Gyrocraft rotor hub body |
| 07/14/1992 | US5129787 Lightweight propulsor blade with internal spars and rigid base members |
| 07/14/1992 | US5129786 Variable pitch pan blade retention arrangement |
| 07/07/1992 | US5127802 Reinforced full-spar composite rotor blade |
| 07/01/1992 | EP0493145A1 Rotor hub for a rotorcraft |
| 07/01/1992 | EP0493005A1 Variable-pitch mechanism of a propeller |
| 07/01/1992 | EP0492207A1 Blade for flow-machines |
| 06/17/1992 | EP0489871A1 System and method for suppressing noise produced by rotors |
| 06/02/1992 | US5118257 Boot attachment for composite turbine blade, turbine blade and method of making turbine blade |
| 06/02/1992 | US5118256 Blade retention apparatus with elastomeric preload |
| 05/20/1992 | EP0295247B1 Device at members forming part of a turbo machinery and a method of producing such members |
| 05/12/1992 | US5112191 Aircraft propulsion system |
| 05/07/1992 | DE4034511A1 Aircraft propeller with two blades mounted one above other - with gap between blades functioning as nozzle |
| 05/06/1992 | CN2103513U Propeller blade for helicopter |
| 04/28/1992 | US5108262 High damping flexible propeller/impleller |