| Class Number |
Class Name |
No. of Patents |
| 244/75.1 |
Aircraft control |
180 |
| 244/96 |
Airship control |
69 |
| 244/97 |
Buoyancy varying |
64 |
| 244/98 |
Gas bag inflation |
42 |
| 244/99 |
Gas release |
19 |
| 244/76R |
Automatic |
222 |
| 244/175 |
Electric course control |
130 |
| 244/191 |
Acceleration control |
39 |
| 244/180 |
By change in altitude |
101 |
| 244/181 |
By change in pitch, angle of attack or flight path |
177 |
| 244/182 |
By change in speed |
127 |
| 244/189 |
By remote radio signal |
62 |
| 244/190 |
Of pilotless aircraft |
116 |
| 244/194 |
Monitoring circuit or response |
208 |
| 244/195 |
Self-adaptive control |
183 |
| 244/177 |
Multiple-axis altitude stabilization |
65 |
| 244/179 |
By change in bank |
21 |
| 244/178 |
Trim control |
65 |
| 244/183 |
Of aircraft on its landing course |
119 |
| 244/184 |
By steering or yaw |
40 |
| 244/185 |
And vertical glide path control |
24 |
| 244/186 |
Vertical glide path control |
44 |
| 244/188 |
Slope control by throttle |
28 |
| 244/187 |
With "flare-out" detection |
24 |
| 244/196 |
Override of automatic control by human pilot |
29 |
| 244/197 |
By engaging manual control system |
26 |
| 244/192 |
With "dead-zone" control |
5 |
| 244/193 |
With "softener" circuit |
5 |
| 244/78.1 |
Fluid |
38 |
| 244/78.2 |
Fluid amplifiers |
7 |
| 244/174 |
Flutter control |
20 |
| 244/80 |
Gravity actuated |
4 |
| 244/76C |
Gust compensators |
39 |
| 244/79 |
Gyroscope actuated |
27 |
| 244/76A |
Motor torque control of flaps or tabs |
21 |
| 244/81 |
Operated by landing |
9 |
| 244/76J |
Steerable jets |
12 |
| 244/82 |
Vane operated |
26 |
| 244/76B |
Velocity operated devices |
10 |
| 244/99.12 |
Drag |
23 |
| 244/99.13 |
Flutter control |
25 |
| 244/99.1 |
Fuselage |
22 |
| 244/220 |
Pilot operated |
46 |
| 244/221 |
Control system |
84 |
| 244/233 |
Cable |
20 |
| 244/229 |
Dual |
43 |
| 244/228 |
Electric |
40 |
| 244/226 |
Fluid |
36 |
| 244/227 |
With electric control |
31 |
| 244/222 |
Other than hand or foot actuated |
4 |
| 244/232 |
With cable and linkage |
31 |
| 244/225 |
With dual purpose surface structure (e.g., elevons) |
26 |
| 244/223 |
With feel |
95 |
| 244/231 |
With interengaging gearing |
4 |
| 244/224 |
With locking means |
50 |
| 244/230 |
With variable output |
31 |
| 244/234 |
Controller |
102 |
| 244/236 |
Electrical pickup |
47 |
| 244/235 |
Rudder bar and pedal |
21 |
| 244/237 |
Three-way steering, single control |
19 |
| 244/87 |
Rudders and empennage |
134 |
| 244/90R |
Ailerons and other roll control devices |
83 |
| 244/90B |
Balanced air pressure |
6 |
| 244/90A |
Roll control spoilers |
23 |
| 244/89 |
Elevators both front and rear |
31 |
| 244/88 |
Rudders universally mounted |
9 |
| 244/99.2 |
Specific control connection or actuator |
106 |
| 244/99.8 |
Actively deformable material (e.g., piezoelectric, shape memory, magnetostrictive, electrostrictive) |
49 |
| 244/99.9 |
Failure tolerant (e.g., jam tolerant, no-back control connection) |
53 |
| 244/99.5 |
Fluid |
25 |
| 244/99.6 |
Fluid pressure source arrangement |
13 |
| 244/99.7 |
Nonlinear fluid actuator |
6 |
| 244/99.3 |
Linkage |
68 |
| 244/99.4 |
Redundant arrangements |
35 |
| 244/92 |
Stabilizing propellers |
3 |
| 244/93 |
Stabilizing weights |
32 |
| 244/95 |
Ballast making |
5 |
| 244/94 |
Ballast storage and release |
18 |
| 244/99.14 |
Trim tab |
7 |
| 244/91 |
Vertical fins |
99 |
| 244/99.11 |
Wing |
37 |
| 244/53R |
Aircraft power plants |
250 |
| 244/53B |
Air intakes |
400 |
| 244/55 |
Arrangement |
199 |
| 244/56 |
Tilting |
112 |
| 244/58 |
Auxiliary |
161 |
| 244/59 |
High altitude |
26 |
| 244/54 |
Mounting |
482 |
| 244/61 |
Power plant using airship gas as fuel |
10 |
| 244/57 |
Radiator arrangement |
40 |
| 244/53A |
Starters |
21 |
| 244/60 |
Transmission of power |
132 |
| 244/50 |
Aircraft propulsion and steering on land or water |
163 |
| 244/62 |
Aircraft propulsion |
83 |
| 244/72 |
Beating wing |
59 |
| 244/73R |
Fluid |
38 |
| 244/74 |
Explosive jet |
17 |
| 244/73C |
Radial outward and downward flow |
15 |
| 244/73B |
Vacuum induced by radial flow |
16 |
| 244/63 |
Launching |
223 |
| 244/64 |
Manual |
12 |
| 244/70 |
Paddle wheel |
10 |
| 244/71 |
Reciprocating propeller |
2 |
| 244/65 |
Screw |
30 |
| 244/67 |
Body encircling |
7 |
| 244/69 |
Contra-propeller arrangements |
20 |
| 244/68 |
Elongated |
2 |
| 244/66 |
Tilting |
35 |
| 244/117R |
Aircraft structure |
234 |
| 244/123.1 |
Airfoil construction |
186 |
| 244/123.7 |
Box beam |
32 |
| 244/123.12 |
Corrugated panels |
19 |
| 244/123.14 |
Hollow |
25 |
| 244/123.13 |
Honeycomb in skin panels |
15 |
| 244/123.11 |
Inflatable |
33 |
| 244/123.8 |
Main spar |
33 |
| 244/123.9 |
Tubular spar |
23 |
| 244/123.5 |
Nonmetallic filler (e.g., metal skin with foam, cork, or rubber filler) |
25 |
| 244/123.6 |
Honeycomb |
16 |
| 244/124 |
Sectional |
61 |
| 244/123.2 |
Sparless frame construction |
5 |
| 244/123.3 |
Integral frame and skin |
45 |
| 244/123.4 |
Open truss/lattice construction |
18 |
| 244/128 |
Airship gas cell construction and arrangement |
36 |
| 244/125 |
Airship hull construction |
62 |
| 244/127 |
Airship load attachment |
39 |
| 244/126 |
Airship skin construction |
57 |
| 244/129.1 |
Details |
225 |
| 244/130 |
Aerodynamic resistance reducing |
482 |
| 244/129.4 |
Closures |
207 |
| 244/129.5 |
Door |
281 |
| 244/118.3 |
Displaceable to function as ramp |
25 |
| 244/129.2 |
Fire prevention devices |
72 |
| 244/131 |
Joints and connections |
370 |
| 244/133 |
Materials of construction |
174 |
| 244/132 |
Skin fastening devices |
134 |
| 244/129.6 |
Steps |
25 |
| 244/129.3 |
Windows |
157 |
| 244/135R |
Fuel supply |
292 |
| 244/135A |
Aircraft refueling |
194 |
| 244/135B |
Flexible containers |
53 |
| 244/135C |
Fuel balancing systems |
51 |
| 244/119 |
Fuselage and body construction |
488 |
| 244/122R |
Seats and safety belts |
244 |
| 244/122A |
Ejection seats |
56 |
| 244/122AE |
Automatic sequence |
30 |
| 244/122AF |
Canopy release |
28 |
| 244/122AG |
Restraint positioning and protective devices |
87 |
| 244/122AH |
Seat separation |
10 |
| 244/122AB |
Catapult and rocket combined |
12 |
| 244/122AC |
Catapult |
4 |
| 244/122AD |
Rocket |
18 |
| 244/122B |
Safety belts |
42 |
| 244/120 |
Sectional |
180 |
| 244/121 |
Shields and other protective devices |
372 |
| 244/134R |
Ice prevention |
238 |
| 244/134C |
Deicing fluid on airfoil exterior |
66 |
| 244/134D |
Electric |
157 |
| 244/134A |
Flexible surfaces |
77 |
| 244/134B |
Heating fluid in airfoil |
83 |
| 244/134F |
Initiators and indicators |
72 |
| 244/134E |
Nature of surface |
34 |
| 244/118.1 |
Load (e.g., cargo) accommodation |
425 |
| 244/118.2 |
Removable, load bearing, airframe section |
60 |
| 244/136 |
Material discharging and diffusing |
154 |
| 244/137.1 |
Passenger or cargo loading or discharging |
360 |
| 244/137.3 |
Aerial cargo unloading by parachute extraction |
72 |
| 244/137.2 |
Passenger |
173 |
| 244/137.4 |
Releasable, externally mounted cargo |
324 |
| 244/118.5 |
Passenger or crew accommodation |
722 |
| 244/118.6 |
Seating arrangement: berth or berthage |
319 |
| 244/117A |
Skin cooling |
119 |
| 244/34R |
Aircraft sustentation |
14 |
| 244/34A |
Annular airfoils |
45 |
| 244/35R |
Sustaining airfoils |
128 |
| 244/45R |
Arrangement |
186 |
| 244/45A |
Canard |
98 |
| 244/46 |
Variable |
121 |
| 244/47 |
Dihedral |
17 |
| 244/49 |
Folding |
199 |
| 244/48 |
Incidence |
65 |
| 244/35A |
Compressible flow |
33 |
| 244/36 |
Lifting fuselages |
116 |
| 244/37 |
Lifting struts |
4 |
| 244/38 |
Resiliently mounted |
15 |
| 244/39 |
Rotatable |
62 |
| 244/198 |
With lift modification |
117 |
| 244/200 |
By characteristic of airfoil's skin |
112 |
| 244/200.1 |
Vortex generation in boundary layer |
73 |
| 244/199.1 |
By vortex control outside of boundary layer |
83 |
| 244/199.2 |
Of tip vortex |
28 |
| 244/199.3 |
Active |
40 |
| 244/199.4 |
Wing tip foils/fences |
86 |
| 244/201 |
Variable |
84 |
| 244/218 |
Area |
91 |
| 244/204 |
By controlling boundary layer |
175 |
| 244/204.1 |
Actively controlled vortex generator |
59 |
| 244/212 |
Having trailing edge flap |
52 |
| 244/207 |
With blowing |
215 |
| 244/208 |
And suction |
86 |
| 244/205 |
With ionic or electrostatic surface |
39 |
| 244/210 |
With nose slot |
38 |
| 244/211 |
Having trailing edge flap |
24 |
| 244/206 |
With rotating member |
24 |
| 244/209 |
With suction |
73 |
| 244/213 |
By flap and/or spoiler |
267 |
| 244/214 |
At leading edge |
182 |
| 244/215 |
At trailing edge |
240 |
| 244/217 |
Plural, relatively pivotable |
41 |
| 244/216 |
Variable gap type, e.g., "fowler flap" |
96 |
| 244/219 |
Camber |
216 |
| 244/203 |
Condition responsive |
93 |
| 244/202 |
With landing gear |
2 |
| 244/4R |
Aircraft, heavier-than-air |
15 |
| 244/8 |
Airplane and auto-rotating wing sustained |
39 |
| 244/11 |
Airplane and beating wing sustained |
43 |
| 244/10 |
Airplane and cylindrical rotor sustained |
23 |
| 244/12.1 |
Airplane and fluid sustained |
101 |
| 244/12.6 |
Channel wing |
23 |
| 244/12.2 |
Circular |
134 |
| 244/12.3 |
Dual propulsion |
92 |
| 244/12.4 |
Thrust tilting |
112 |
| 244/12.5 |
With thrust diverting |
174 |
| 244/6 |
Airplane and helicopter sustained |
79 |
| 244/7R |
Convertible |
98 |
| 244/7A |
Rotary wing |
57 |
| 244/7B |
Tail sitters |
34 |
| 244/7C |
Tilting wing |
44 |
| 244/9 |
Airplane and paddle wheel sustained |
27 |
| 244/13 |
Airplane sustained |
117 |
| 244/14 |
Aerial torpedoes |
11 |
| 244/15 |
Fluid propelled |
56 |
| 244/16 |
Glider |
67 |
| 244/5 |
Airplanes, weight diminished by bouyant gas |
28 |
| 244/22 |
Beating wing sustained |
53 |
| 244/4A |
Body attached |
33 |
| 244/21 |
Cylindrical rotor sustained |
16 |
| 244/23R |
Fluid sustained |
47 |
| 244/23C |
Circular configuration |
158 |
| 244/23B |
Dual propulsion means, horizontal and vertical |
82 |
| 244/23A |
Lifting thrusters |
62 |
| 244/23D |
Thrust diverters |
117 |
| 244/17.11 |
Helicopter or auto-rotating wing sustained, i.e., gyroplanes |
383 |
| 244/17.13 |
Automatic or condition responsive control |
279 |
| 244/17.23 |
Having plural lifting rotors |
127 |
| 244/17.25 |
Lifting rotor having lift direction varying means |
116 |
| 244/17.27 |
Lifting rotor supports, e.g., pylons |
139 |
| 244/17.19 |
With auxiliary propulsion, counter-troque or steering device |
147 |
| 244/17.21 |
Auxiliary rotor |
41 |
| 244/17.17 |
With landing, mooring, or nonaerial propelling or steering gear |
75 |
| 244/17.15 |
With safety lowering device |
15 |
| 244/19 |
Paddle wheel sustained |
17 |
| 244/20 |
Feathering |
9 |
| 244/24 |
Aircraft, lighter-than-air |
51 |
| 244/28 |
Airship and beating wing sustained |
8 |
| 244/29 |
Airship and fluid sustained |
31 |
| 244/26 |
Airship and helicopter sustained |
42 |
| 244/27 |
Airship and paddle wheel sustained |
2 |
| 244/25 |
Airships with sustaining wings |
36 |
| 244/30 |
Airships |
189 |
| 244/31 |
Balloons |
153 |
| 244/33 |
Captive |
106 |
| 244/32 |
With parachutes |
7 |
| 244/51 |
Aircraft, steering propulsion |
37 |
| 244/52 |
Fluid |
147 |
| 244/2 |
Composite aircraft |
198 |
| 244/3 |
Trains |
36 |
| 244/905 |
Inflatable evacuation slide |
78 |
| 244/153R |
Kites |
240 |
| 244/155R |
Accessories |
118 |
| 244/155A |
Kite controls |
128 |
| 244/154 |
Airplane type |
32 |
| 244/153A |
Rotating |
37 |
| 244/114R |
Landing field arrangement |
153 |
| 244/114B |
Blast deflectors |
21 |
| 244/115 |
Mooring devices |
95 |
| 244/116 |
Movable |
69 |
| 244/100R |
Landing gear |
161 |
| 244/101 |
Amphibian |
37 |
| 244/100C |
Endless track |
2 |
| 244/100A |
Inflatable |
57 |
| 244/102R |
Retractable |
218 |
| 244/102A |
Interconnected elements |
71 |
| 244/102SL |
Strut locks |
47 |
| 244/102SS |
Strut shortening |
35 |
| 244/108 |
Skids |
51 |
| 244/109 |
Tail supports |
13 |
| 244/105 |
Water landing |
65 |
| 244/107 |
Emergency |
30 |
| 244/106 |
Flying boat |
28 |
| 244/103R |
Wheel |
94 |
| 244/103W |
Crosswind gear |
11 |
| 244/103S |
Prerotation |
32 |
| 244/104R |
Resiliently mounted |
44 |
| 244/104CS |
Coil spring |
5 |
| 244/104FP |
Fluid pressure |
75 |
| 244/104LS |
Leaf spring |
4 |
| 244/900 |
Lightweight, winged, air vehicle (e,g,. ultralight or hang glider) |
41 |
| 244/901 |
Having delta shaped wing |
20 |
| 244/902 |
Having parachute type wing |
45 |
| 244/904 |
Miscellaneous hardware or control |
16 |
| 244/903 |
Powered |
42 |
| 244/1R |
Miscellaneous |
401 |
| 244/1A |
Lightning arresters and static eliminators |
110 |
| 244/1N |
Noise abatement |
228 |
| 244/1TD |
Trailing devices |
120 |
| 244/3.1 |
Missile stabilization or trajectory control |
488 |
| 244/3.15 |
Automatic guidance |
440 |
| 244/3.21 |
Attitude control mechanisms |
276 |
| 244/3.22 |
Fluid reaction type |
250 |
| 244/3.2 |
Inertial |
82 |
| 244/3.16 |
Optical (includes infrared) |
533 |
| 244/3.18 |
Celestial navigation |
22 |
| 244/3.17 |
Optical correlation |
82 |
| 244/3.19 |
Radio wave |
166 |
| 244/3.24 |
Externally mounted stabilizing appendage (e.g., fin) |
244 |
| 244/3.27 |
Collapsible |
186 |
| 244/3.28 |
Longitudinally rotating |
165 |
| 244/3.29 |
Radially rotating |
115 |
| 244/3.3 |
Extending beyond rear of missile |
60 |
| 244/3.25 |
Removable |
36 |
| 244/3.26 |
Sliding |
34 |
| 244/3.11 |
Remote control |
251 |
| 244/3.13 |
Beam rider |
151 |
| 244/3.14 |
Radio wave |
178 |
| 244/3.12 |
Trailing wire |
108 |
| 244/3.23 |
Stabilized by rotation |
148 |
| 244/110R |
Retarding and restraining devices |
60 |
| 244/110D |
Aerodynamic braking |
28 |
| 244/113 |
Aerodynamic retarders |
71 |
| 244/110G |
Arresting hoods |
10 |
| 244/110A |
Brake |
33 |
| 244/110C |
Cable or net support |
58 |
| 244/110H |
Friction brakes |
7 |
| 244/110E |
Landing platforms |
46 |
| 244/110F |
Snares |
36 |
| 244/110B |
Thrust reversers |
312 |
| 244/112 |
Water brake arrangement |
2 |
| 244/111 |
Wheel brake arrangement |
142 |
| 244/138R |
Safety lowering devices |
128 |
| 244/139 |
Entire aircraft |
86 |
| 244/142 |
Parachutes |
111 |
| 244/144 |
Aircraft element convertible to parachute |
3 |
| 244/145 |
Canopy construction |
134 |
| 244/152 |
Control devices |
166 |
| 244/143 |
Garment attached |
12 |
| 244/151R |
Harness |
77 |
| 244/151B |
Parachute load releasing |
79 |
| 244/151A |
Parchute harness connection |
40 |
| 244/146 |
Inflated bracing |
35 |
| 244/147 |
Storage and release |
94 |
| 244/149 |
Opening devices |
95 |
| 244/148 |
Packs |
33 |
| 244/150 |
Timing mechanism |
36 |
| 244/140 |
Passenger compartment |
34 |
| 244/141 |
Seat |
43 |
| 244/138A |
Rotating vanes |
15 |
| 244/158.1 |
Spacecraft |
207 |
| 244/164 |
Attitude control |
396 |
| 244/167 |
By gravity gradient |
20 |
| 244/165 |
By gyroscope or flywheel |
256 |
| 244/169 |
By jet motor |
178 |
| 244/166 |
By magnetic effect |
74 |
| 244/170 |
By nutation damper |
60 |
| 244/168 |
By solar pressure |
69 |
| 244/171 |
With attitude sensor means |
270 |
| 244/171.6 |
Having launch pad cooperating structure |
15 |
| 244/158.3 |
Inflated |
33 |
| 244/159.4 |
Modular and assembled in space |
83 |
| 244/159.5 |
Foldable |
32 |
| 244/159.6 |
Including use of launch vehicle part |
16 |
| 244/172.4 |
Rendezvous or docking |
133 |
| 244/172.5 |
Including satellite servicing |
67 |
| 244/158.9 |
Reusable or returnable |
37 |
| 244/159.3 |
Having aerodynamic lifting body (e.g., space shuttle) |
33 |
| 244/159.1 |
With reentry shield |
119 |
| 244/159.2 |
Inflatable |
22 |
| 244/158.4 |
Spacecraft formation, orbit, or interplanetary path |
118 |
| 244/158.5 |
Orbit insertion |
58 |
| 244/158.6 |
Orbital control |
53 |
| 244/158.7 |
Aerobraking |
15 |
| 244/158.8 |
Automatic |
37 |
| 244/158.2 |
Tethered |
38 |
| 244/172.6 |
With deployable appendage |
168 |
| 244/172.2 |
With fuel system details |
79 |
| 244/172.3 |
Fuel tank arrangement |
36 |
| 244/173.1 |
With payload accommodation |
116 |
| 244/173.3 |
And payload deployment |
118 |
| 244/173.2 |
Including vibration control |
40 |
| 244/171.1 |
With propulsion |
149 |
| 244/171.3 |
Launch from surface to orbit |
56 |
| 244/171.4 |
Horizontal launch |
18 |
| 244/171.2 |
Steerable mount |
14 |
| 244/171.5 |
Without mass expulsion |
34 |
| 244/171.7 |
With shield or other protective means (e.g., meteorite shield, insulation, radiation/plasma shield) |
138 |
| 244/171.8 |
Active thermal control |
130 |
| 244/172.7 |
With solar panel |
188 |
| 244/172.9 |
Having launch hold down means |
23 |
| 244/172.8 |
Having solar concentrator |
38 |
| 244/171.9 |
With special crew accommodations |
30 |
| 244/172.1 |
Emergency rescue means (e.g., escape pod) |
11 |
