| Patents for B64C 31 - Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft (1,264) |
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| 10/09/1991 | CN1055151A Flapping-wing manpower aircraft with dissimilar wings |
| 10/08/1991 | US5054721 Vertical takeoff aircraft |
| 09/03/1991 | US5044576 Parawing with an automatic canopy withdrawing mechanism |
| 08/21/1991 | EP0442513A1 Paraglider |
| 07/18/1991 | DE4102788A1 Safety device for hand-glider - tightens pilot's safety belt in event of crash |
| 07/09/1991 | US5029777 Seat harness for parachute of the type having a flexible wing |
| 07/09/1991 | US5029774 Glider |
| 06/22/1991 | WO1991009777A1 Glider |
| 06/22/1991 | CA2071945A1 Glider |
| 06/19/1991 | EP0433159A1 Deployable system for carrying and lifting ammunition |
| 06/18/1991 | CA1284916C Torpedo recovery device |
| 05/30/1991 | WO1991007316A1 Device for supplying air to a double-surfaced aerodynamic shape |
| 05/29/1991 | EP0429374A1 Air or water cushion for a harness |
| 05/22/1991 | CN1051536A Heteropterous flapping wing manpower flight vehicle |
| 05/07/1991 | US5012993 Gliding parachute |
| 05/02/1991 | DE4031525A1 Stabilised wing for hang glider - has porous air panels under wing behind leading edge |
| 04/10/1991 | CN2074745U Flying-wing toy |
| 04/04/1991 | WO1991004589A1 Detection of airborne craft |
| 01/31/1991 | DE4016850A1 In-flight cleaning of aircraft wing leading edge - by vane seated, when not in use, in niche in fuselage or wing fillet, with its outer surface flush with that of aircraft |
| 01/29/1991 | US4988059 Large area single surface display kite |
| 01/24/1991 | DE4026089A1 Muscle powered tandem helicopter or sailplane - has pedal operated mechanism which produces constant driving torque |
| 01/08/1991 | US4982917 Glider-canopy |
| 11/14/1990 | EP0397109A1 Body support for a hang glider type aircraft |
| 11/08/1990 | DE3914470A1 Hang glider fitted with engine and propeller - has system to vary position of engine support point relative to line of thrust |
| 11/08/1990 | DE3914469A1 Guard ring for propeller of motorised hang glider - has circumferential groove filled with plastics foam |
| 11/08/1990 | DE3914468A1 IC engine for use with hang glider - has controls mounted on support which is strapped to pilot's forearm |
| 10/31/1990 | DE3913551A1 Hang-glider pilot suspension belt - has ropes adjustable in flight to bring legs higher |
| 10/17/1990 | EP0392911A1 Device permitting the transformation of a motorcycle into an ultra-light aircraft |
| 10/11/1990 | CA2014391A1 Device making it possible to convert a motorcycle in to a motorized ultralight aircraft |
| 10/03/1990 | CN1045740A Manual flying vehicle with flapping-wings of different fins |
| 08/16/1990 | DE3903779A1 Wing (mainplane) |
| 06/19/1990 | US4934630 Powered airfoil canopy aircraft |
| 06/05/1990 | US4930724 Powered airfoil canopy aircraft |
| 05/22/1990 | US4927100 Airfoil configuration |
| 04/19/1990 | WO1990003917A1 Kite-like flying device with dual handles and four point control |
| 04/19/1990 | DE3832157A1 Flying object as a harvesting apparatus, and a method for stabilising the flying object |
| 04/05/1990 | DE3832697A1 Motorisation supplement for hang gliders and ultra-light aircraft which can making running take-offs |
| 03/14/1990 | CN1007144B Aerodynamic device |
| 03/07/1990 | EP0174370B1 Ultra light aircraft with freely rotating rigid wing |
| 02/20/1990 | US4901945 Hybrid wing assembly |
| 02/08/1990 | DE3826856A1 Automatic thrust vector control for weight-controlled ultralight aircraft |
| 02/07/1990 | EP0354110A1 Flying device to be trailed or propelled |
| 02/06/1990 | US4898345 Skyboard |
| 01/09/1990 | US4892272 Kite-like flying device with dual handles and four point control |
| 12/20/1989 | EP0346323A1 Steering device for a hang glider. |
| 12/14/1989 | DE3911663A1 Muscle-powered short-flight aircraft |
| 11/30/1989 | WO1989011417A1 Wind driven craft |
| 11/08/1989 | EP0341208A1 Powered fuselage suspended below a wing |
| 11/02/1989 | DE3813369A1 Locking device for propellers of motorised gliders having a retractable engine |
| 10/24/1989 | US4875642 Light aircraft with parachute wing |
| 10/11/1989 | EP0336910A1 Pneumatic launching device for rescue parachutes for aerodines and aerostats |
| 10/11/1989 | EP0336277A1 Gliding parachute |
| 10/11/1989 | CN2045664U Manpower helicopter entertainment equipment |
| 10/05/1989 | DE3916535A1 Motorisation accessory for all-wing hang gliders which can take off from a running start |
| 10/03/1989 | US4871132 Aerodynamic structural pipe for hang gliders |
| 08/29/1989 | US4860970 Nonrigid wing aircraft |
| 08/24/1989 | WO1989007548A1 Hybrid wing assembly |
| 08/24/1989 | DE3804562A1 Aircraft float |
| 08/24/1989 | DE3804561A1 Aircraft |
| 08/22/1989 | US4858854 Inflatable aerodynamic wing structure |
| 08/16/1989 | EP0327778A1 Seat harness for a gliding airfoil chute |
| 08/02/1989 | EP0325953A2 Gliding parachute |
| 07/25/1989 | CA1257856A1 Wing structure with self-induced camber |
| 07/18/1989 | US4848704 Aerodynamic devices |
| 07/12/1989 | EP0175739B1 Flex wing apparatus |
| 06/22/1989 | DE3741857A1 Drive extension/retraction mechanism for 2-engined aircraft in weight classes (civil) G, I, K and corresponding military aircraft |
| 06/15/1989 | WO1989005263A1 Improved stunt kite dihedral wing |
| 05/24/1989 | EP0202271B1 Propulsive wing with inflatable armature |
| 05/17/1989 | EP0315843A1 Ultralight aircraft with interconnected wings |
| 05/11/1989 | DE3736839A1 Cableway for hang-gliders (kites) |
| 05/11/1989 | DE3736255A1 Geometrical reduction in the decalage for hang gliders having a flexible wing and gravity-force control, and simultaneous influencing of the profile (warping) in the trailing profile region |
| 05/03/1989 | DE3735567A1 Hang gliding rescue system |
| 04/26/1989 | EP0180611B1 Aerodynamic devices |
| 03/28/1989 | US4815681 Stunt kite dihedral wing |
| 01/12/1989 | DE3722057A1 Hang glider |
| 01/05/1989 | DE3714824A1 Hang glider |
| 12/28/1988 | CN88101826A Flying wing with tongue plate and its spray type air cushion |
| 12/22/1988 | DE3719800A1 Folding propeller device for motorised gliders |
| 11/17/1988 | DE3714825A1 Hang glider |
| 11/01/1988 | US4781341 Flying wing aircraft |
| 10/25/1988 | US4779825 Aerodynamic devices |
| 10/11/1988 | US4776530 Safety apparatus for hang glider |
| 09/27/1988 | US4773619 Aircraft structure for take-off and landing on a pilot's feet |
| 09/21/1988 | EP0127652B1 Air craft structure for take-off and landing on the feet of the pilot |
| 09/15/1988 | DE3706211A1 Parachute with a motor drive |
| 09/07/1988 | WO1988006550A1 Steering device for a hang glider |
| 08/17/1988 | EP0278784A2 Light aircraft |
| 08/04/1988 | DE3702273A1 Hang glider composite-wing system |
| 07/14/1988 | WO1988005010A1 Pendular pilotting device integrated on two axes of an aircraft |
| 05/19/1988 | DE3637691A1 Hang glider having a telescopic lateral rod or wing strut and a wing profile which can be clamped on by means of elastic sail slats |
| 05/11/1988 | DE3717030A1 Mainplane cleaning apparatus for removing flies or the like from the wing leading edge in flight |
| 04/28/1988 | DE3713657A1 Ram pressure ventilation system |
| 03/30/1988 | EP0261753A2 Aerodynamic devices |
| 03/29/1988 | CA1234513A1 Flex wing apparatus |
| 03/16/1988 | EP0259363A1 Torpedo recovery device |
| 02/02/1988 | US4722498 Inflatable air foil |
| 01/14/1988 | WO1988000152A1 Foldable wing, particularly for slope flight |
| 01/14/1988 | DE3621823A1 Trimming device for hang gliders having a tail motor (engine) |
| 01/05/1988 | US4717092 Torpedo recovery device |
| 11/24/1987 | US4708079 Flex wing apparatus with resilient couplings |