| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
|---|
| 04/28/1992 | US5108259 Flexible connector for use in aircraft |
| 04/07/1992 | US5102302 Fan blade mount |
| 04/07/1992 | US5102300 Pinned airfoil propeller assembly |
| 04/07/1992 | US5102066 Vertical take-off and landing aircraft |
| 04/02/1992 | DE4134062A1 Aircraft propeller with tandem blades - has each tandem pair consisting of two overlapping blades |
| 03/31/1992 | US5099573 Method of making hollow articles |
| 03/25/1992 | CN2099732U Rotorcraft blade |
| 03/17/1992 | US5096384 Plastic fan blade for industrial cooling towers and method of making same |
| 03/17/1992 | US5096383 Propeller blades |
| 03/17/1992 | US5096382 Ring-shrouded propeller |
| 03/11/1992 | EP0464158A4 Lightweight airfoil |
| 03/05/1992 | CA2048799A1 Propeller pitch control |
| 03/03/1992 | US5093791 Variable gain synchrophasing |
| 02/25/1992 | US5090869 Variable pitch propeller module for an aero gas turbine engine powerplant |
| 02/12/1992 | CN2095830U 空气螺旋桨 Air propeller |
| 02/11/1992 | WO1992002412A1 A propeller control system |
| 02/11/1992 | WO1992002411A1 A propeller control system |
| 02/11/1992 | CA2067171A1 Propeller control system |
| 02/11/1992 | CA2067153A1 Propeller control system |
| 01/29/1992 | EP0468221A2 Method of making hollow articles |
| 01/28/1992 | WO1992002410A1 Plastic fan blade for industrial cooling towers and method of making same |
| 01/28/1992 | CA2087846A1 Plastic fan blade for industrial cooling towers and method of making same |
| 01/21/1992 | US5082424 Connection system for aircraft propeller blades |
| 01/21/1992 | CA2042218A1 Composite airfoil with increased shear capability |
| 01/14/1992 | US5079916 Counter rotation power turbine |
| 01/08/1992 | EP0464158A1 Lightweight airfoil. |
| 12/24/1991 | US5075564 Combined solar and wind powered generator with spiral surface pattern |
| 11/19/1991 | US5066195 Propeller for aircraft or the like |
| 10/29/1991 | US5061153 Aircraft propeller assembly with blade pitch reset for ground idle |
| 10/17/1991 | WO1991015399A1 Propeller with twistable blades |
| 10/08/1991 | US5054998 Thrust reversing system for counter rotating propellers |
| 10/08/1991 | CA1290306C Propeller blade |
| 10/02/1991 | EP0448559A1 Lift-jet engine for independent operation or for use in an aircraft. |
| 10/02/1991 | DE4010211A1 Propeller blade twisting about its radial axis - is constructed from longitudinal segments divided transversely into smaller segments |
| 09/12/1991 | DE4026112C1 Exhaust for propeller aircraft - has mouth of exhaust located at small distance from propeller blade plane |
| 08/27/1991 | US5042966 Pitch control system |
| 08/27/1991 | US5042965 Propeller synchrophaser control with trajectory logic |
| 08/14/1991 | EP0441300A2 Surface processing method comprising blowing submicron particles |
| 08/14/1991 | EP0440640A1 Spinner ducted exhaust for pusher turboprop engines |
| 08/06/1991 | US5037271 Pitch control system |
| 07/30/1991 | US5035576 Propeller blade pin attachment |
| 07/30/1991 | US5035377 Free standing or aircraft lift generator |
| 07/17/1991 | CN1013185B Airfoiled blade |
| 07/16/1991 | US5031858 Apparatus and method for folding and locking rotor blades |
| 07/11/1991 | WO1991009775A1 Pitch control system |
| 07/11/1991 | WO1991009774A1 Pitch control system |
| 07/10/1991 | EP0436231A2 Pitch control apparatus for variable pitch propeller |
| 07/04/1991 | DE3943075A1 Aircraft propeller blade - is twisted about radial axis and is constructed from segments enclosed in elastic envelope |
| 07/02/1991 | US5029091 Ground mode control of aircraft propeller speed and pitch |
| 07/02/1991 | US5028207 Arrangement for adjusting the rotor blades of a propfan turboprop engine |
| 06/26/1991 | CN1052457A Controller for safety landing of airplane |
| 06/25/1991 | US5027277 Method for synchrophaser measurement and synchrophaser control |
| 06/11/1991 | US5023793 Apparatus and method for dynamic compensation of a propeller pitch speed control governor |
| 06/11/1991 | US5022825 Pitch retention member |
| 06/11/1991 | US5022824 Pinned airfoil propeller blade |
| 06/04/1991 | CA1284682C Propeller synchrophaser |
| 05/30/1991 | WO1991007314A1 Apparatus and method for folding and locking rotor blades |
| 05/28/1991 | US5019006 Aircraft engine propeller overspeed protection technical field |
| 05/23/1991 | DE4040411A1 Multi-blade propeller or airscrew - incorporates axial displacement of blades to increase airflow speed |
| 05/21/1991 | US5017092 Rotor blade retention |
| 05/21/1991 | US5017089 Propeller speed governor having a derivative inhibit at high flight speeds |
| 05/14/1991 | US5015150 Arrangement for mounting a pivotable propfan blade |
| 04/24/1991 | EP0423902A1 Propellor blade position controller |
| 04/23/1991 | CA1283366C Reduced loss swept supersonic fan blade |
| 04/17/1991 | CN1012353B Blade for high-performance shrouded propeller |
| 04/09/1991 | US5005354 Fuel control having reset of propeller overspeed and underspeed governors |
| 03/26/1991 | US5002001 Blade-like profiled device for acting on a gaseous or liquid fluid flow |
| 03/21/1991 | WO1991003623A1 System and method for suppressing noise produced by rotors |
| 03/14/1991 | DE3929719A1 Aircraft propeller swivel blades - are attached to hub by ball joints which permit limited movement of blades relative to hub |
| 03/05/1991 | US4997414 Torque equalizer for contrarotary shafts |
| 02/19/1991 | US4993919 Discrete (on-off) feather signal to govern propeller overspeed |
| 02/05/1991 | US4990205 Composite |
| 01/23/1991 | EP0409552A2 A propeller blade pitch control mechanism |
| 01/23/1991 | EP0408618A1 Rotary machine with non-positive displacement, for use as a pump, compressor, propulsion unit, generator or drive turbine |
| 01/22/1991 | US4986734 Overspeed protection system for aircraft fan engine |
| 01/16/1991 | CN1011215B Improved propeller synchrophaser |
| 01/15/1991 | US4984967 Propfan blade erection damper |
| 01/15/1991 | CA1278924C Blade pitch varying mechanism |
| 01/10/1991 | WO1991000212A1 Lightweight airfoil |
| 01/08/1991 | US4982914 Aircraft with a plurality of propellers, a pipe structure for thereon holdable wings, for vertical take off and landing |
| 12/27/1990 | CA1278287C2 Composite material propeller blade and process therefor |
| 12/26/1990 | CN1010933B Sections for shrouded propeller blade |
| 12/25/1990 | US4979876 Propfan |
| 12/18/1990 | US4978286 Variable cycle engine passive mechanism |
| 12/11/1990 | US4976102 High bypass ratio gas turbine engine |
| 12/05/1990 | CA2012246A1 Connection system for aircraft propeller blades |
| 12/04/1990 | US4974633 System for controlling the flow of a fluid medium relative to an object |
| 11/28/1990 | CN1047256A Fuel control having reset of propeller overspeed and underspeed governors |
| 11/27/1990 | US4973225 Adjustable propeller |
| 11/22/1990 | EP0398109A2 Propulsion unit for aircrafts flying at very high altitude |
| 11/22/1990 | DE4004514A1 Ducted propeller for aircraft or ship - has axially sliding cones to vary effective areas of duct inlet and outlet |
| 11/20/1990 | US4971641 Method of making counterrotating aircraft propeller blades |
| 11/20/1990 | US4971521 Airfoil blade for impeller fan and manufacturing method thereof |
| 11/14/1990 | EP0397592A2 Improved method of phase control and measurement for propeller synchronizers |
| 11/14/1990 | CN1046989A Use of discrete (on-off) feather signal to govern propeller overspeed |
| 11/14/1990 | CN1046988A Apparatus and method for dynamic compensation of a propeller pitch speed control governer |
| 11/13/1990 | US4969800 Open rotor blading |
| 11/07/1990 | EP0396496A1 Aircraft engine propulsor blade pitch sensing |
| 11/06/1990 | US4968217 Variable pitch arrangement for a gas turbine engine |
| 10/31/1990 | CN1010206B Propller synchrophaser and mode logic |