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Class Information
Number: 244
Name: Aeronautics and astronautics >
Description: This class contains and is limited to:










Class Number Class Name No. of Patents
244/75.1

Aircraft control

206
244/96

Airship control

70
244/97

Buoyancy varying

66
244/98

Gas bag inflation

43
244/99

Gas release

20
244/76R

Automatic

252
244/175

Electric course control

143
244/191

Acceleration control

41
244/180

By change in altitude

106
244/181

By change in pitch, angle of attack or flight path

184
244/182

By change in speed

131
244/189

By remote radio signal

68
244/190

Of pilotless aircraft

120
244/194

Monitoring circuit or response

218
244/195

Self-adaptive control

190
244/177

Multiple-axis altitude stabilization

66
244/179

By change in bank

21
244/178

Trim control

68
244/183

Of aircraft on its landing course

126
244/184

By steering or yaw

42
244/185

And vertical glide path control

25
244/186

Vertical glide path control

48
244/188

Slope control by throttle

30
244/187

With "flare-out" detection

25
244/196

Override of automatic control by human pilot

32
244/197

By engaging manual control system

27
244/192

With "dead-zone" control

5
244/193

With "softener" circuit

5
244/78.1

Fluid

38
244/78.2

Fluid amplifiers

8
244/174

Flutter control

20
244/80

Gravity actuated

4
244/76C

Gust compensators

40
244/79

Gyroscope actuated

28
244/76A

Motor torque control of flaps or tabs

23
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

25
244/99.13

Flutter control

25
244/99.1

Fuselage

22
244/220

Pilot operated

57
244/221

Control system

95
244/233

Cable

20
244/229

Dual

47
244/228

Electric

43
244/226

Fluid

37
244/227

With electric control

34
244/222

Other than hand or foot actuated

4
244/232

With cable and linkage

32
244/225

With dual purpose surface structure (e.g., elevons)

27
244/223

With feel

98
244/231

With interengaging gearing

6
244/224

With locking means

55
244/230

With variable output

32
244/234

Controller

110
244/236

Electrical pickup

48
244/235

Rudder bar and pedal

23
244/237

Three-way steering, single control

19
244/87

Rudders and empennage

147
244/90R

Ailerons and other roll control devices

86
244/90B

Balanced air pressure

6
244/90A

Roll control spoilers

24
244/89

Elevators both front and rear

33
244/88

Rudders universally mounted

9
244/99.2

Specific control connection or actuator

129
244/99.8

Actively deformable material (e.g., piezoelectric, shape memory, magnetostrictive, electrostrictive)

53
244/99.9

Failure tolerant (e.g., jam tolerant, no-back control connection)

59
244/99.5

Fluid

31
244/99.6

Fluid pressure source arrangement

20
244/99.7

Nonlinear fluid actuator

6
244/99.3

Linkage

78
244/99.4

Redundant arrangements

47
244/92

Stabilizing propellers

4
244/93

Stabilizing weights

33
244/95

Ballast making

5
244/94

Ballast storage and release

18
244/99.14

Trim tab

11
244/91

Vertical fins

103
244/99.11

Wing

37
244/53R

Aircraft power plants

271
244/53B

Air intakes

432
244/55

Arrangement

211
244/56

Tilting

117
244/58

Auxiliary

180
244/59

High altitude

28
244/54

Mounting

527
244/61

Power plant using airship gas as fuel

10
244/57

Radiator arrangement

47
244/53A

Starters

22
244/60

Transmission of power

145
244/50

Aircraft propulsion and steering on land or water

193
244/62

Aircraft propulsion

86
244/72

Beating wing

60
244/73R

Fluid

40
244/74

Explosive jet

18
244/73C

Radial outward and downward flow

15
244/73B

Vacuum induced by radial flow

16
244/63

Launching

235
244/64

Manual

13
244/70

Paddle wheel

11
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

36
244/117R

Aircraft structure

263
244/123.1

Airfoil construction

210
244/123.7

Box beam

33
244/123.12

Corrugated panels

20
244/123.14

Hollow

26
244/123.13

Honeycomb in skin panels

18
244/123.11

Inflatable

35
244/123.8

Main spar

34
244/123.9

Tubular spar

24
244/123.5

Nonmetallic filler (e.g., metal skin with foam, cork, or rubber filler)

28
244/123.6

Honeycomb

16
244/124

Sectional

63
244/123.2

Sparless frame construction

5
244/123.3

Integral frame and skin

47
244/123.4

Open truss/lattice construction

20
244/128

Airship gas cell construction and arrangement

39
244/125

Airship hull construction

64
244/127

Airship load attachment

40
244/126

Airship skin construction

58
244/129.1

Details

242
244/130

Aerodynamic resistance reducing

511
244/129.4

Closures

222
244/129.5

Door

295
244/118.3

Displaceable to function as ramp

27
244/129.2

Fire prevention devices

74
244/131

Joints and connections

417
244/133

Materials of construction

185
244/132

Skin fastening devices

147
244/129.6

Steps

26
244/129.3

Windows

170
244/135R

Fuel supply

315
244/135A

Aircraft refueling

208
244/135B

Flexible containers

55
244/135C

Fuel balancing systems

55
244/119

Fuselage and body construction

561
244/122R

Seats and safety belts

259
244/122A

Ejection seats

57
244/122AE

Automatic sequence

30
244/122AF

Canopy release

28
244/122AG

Restraint positioning and protective devices

88
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

204
244/121

Shields and other protective devices

394
244/134R

Ice prevention

253
244/134C

Deicing fluid on airfoil exterior

67
244/134D

Electric

172
244/134A

Flexible surfaces

77
244/134B

Heating fluid in airfoil

91
244/134F

Initiators and indicators

76
244/134E

Nature of surface

34
244/118.1

Load (e.g., cargo) accommodation

462
244/118.2

Removable, load bearing, airframe section

63
244/136

Material discharging and diffusing

163
244/137.1

Passenger or cargo loading or discharging

384
244/137.3

Aerial cargo unloading by parachute extraction

76
244/137.2

Passenger

174
244/137.4

Releasable, externally mounted cargo

331
244/118.5

Passenger or crew accommodation

795
244/118.6

Seating arrangement: berth or berthage

355
244/117A

Skin cooling

120
244/34R

Aircraft sustentation

16
244/34A

Annular airfoils

46
244/35R

Sustaining airfoils

130
244/45R

Arrangement

193
244/45A

Canard

100
244/46

Variable

127
244/47

Dihedral

18
244/49

Folding

209
244/48

Incidence

65
244/35A

Compressible flow

36
244/36

Lifting fuselages

120
244/37

Lifting struts

5
244/38

Resiliently mounted

16
244/39

Rotatable

65
244/198

With lift modification

124
244/200

By characteristic of airfoil's skin

125
244/200.1

Vortex generation in boundary layer

78
244/199.1

By vortex control outside of boundary layer

90
244/199.2

Of tip vortex

28
244/199.3

Active

41
244/199.4

Wing tip foils/fences

92
244/201

Variable

89
244/218

Area

97
244/204

By controlling boundary layer

184
244/204.1

Actively controlled vortex generator

64
244/212

Having trailing edge flap

59
244/207

With blowing

224
244/208

And suction

92
244/205

With ionic or electrostatic surface

43
244/210

With nose slot

39
244/211

Having trailing edge flap

30
244/206

With rotating member

26
244/209

With suction

77
244/213

By flap and/or spoiler

289
244/214

At leading edge

199
244/215

At trailing edge

267
244/217

Plural, relatively pivotable

49
244/216

Variable gap type, e.g., "fowler flap"

103
244/219

Camber

219
244/203

Condition responsive

99
244/202

With landing gear

2
244/4R

Aircraft, heavier-than-air

18
244/8

Airplane and auto-rotating wing sustained

39
244/11

Airplane and beating wing sustained

43
244/10

Airplane and cylindrical rotor sustained

24
244/12.1

Airplane and fluid sustained

108
244/12.6

Channel wing

23
244/12.2

Circular

138
244/12.3

Dual propulsion

98
244/12.4

Thrust tilting

126
244/12.5

With thrust diverting

180
244/6

Airplane and helicopter sustained

88
244/7R

Convertible

104
244/7A

Rotary wing

62
244/7B

Tail sitters

35
244/7C

Tilting wing

48
244/9

Airplane and paddle wheel sustained

29
244/13

Airplane sustained

124
244/14

Aerial torpedoes

11
244/15

Fluid propelled

58
244/16

Glider

69
244/5

Airplanes, weight diminished by bouyant gas

28
244/22

Beating wing sustained

54
244/4A

Body attached

35
244/21

Cylindrical rotor sustained

18
244/23R

Fluid sustained

53
244/23C

Circular configuration

171
244/23B

Dual propulsion means, horizontal and vertical

88
244/23A

Lifting thrusters

68
244/23D

Thrust diverters

121
244/17.11

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

408
244/17.13

Automatic or condition responsive control

302
244/17.23

Having plural lifting rotors

151
244/17.25

Lifting rotor having lift direction varying means

125
244/17.27

Lifting rotor supports, e.g., pylons

145
244/17.19

With auxiliary propulsion, counter-troque or steering device

160
244/17.21

Auxiliary rotor

46
244/17.17

With landing, mooring, or nonaerial propelling or steering gear

79
244/17.15

With safety lowering device

15
244/19

Paddle wheel sustained

17
244/20

Feathering

9
244/24

Aircraft, lighter-than-air

57
244/28

Airship and beating wing sustained

9
244/29

Airship and fluid sustained

35
244/26

Airship and helicopter sustained

43
244/27

Airship and paddle wheel sustained

3
244/25

Airships with sustaining wings

38
244/30

Airships

204
244/31

Balloons

161
244/33

Captive

110
244/32

With parachutes

8
244/51

Aircraft, steering propulsion

40
244/52

Fluid

152
244/2

Composite aircraft

207
244/3

Trains

37
244/905

Inflatable evacuation slide

78
244/153R

Kites

243
244/155R

Accessories

118
244/155A

Kite controls

133
244/154

Airplane type

32
244/153A

Rotating

37
244/114R

Landing field arrangement

163
244/114B

Blast deflectors

21
244/115

Mooring devices

96
244/116

Movable

72
244/100R

Landing gear

182
244/101

Amphibian

38
244/100C

Endless track

2
244/100A

Inflatable

59
244/102R

Retractable

239
244/102A

Interconnected elements

84
244/102SL

Strut locks

50
244/102SS

Strut shortening

40
244/108

Skids

56
244/109

Tail supports

14
244/105

Water landing

66
244/107

Emergency

31
244/106

Flying boat

29
244/103R

Wheel

103
244/103W

Crosswind gear

11
244/103S

Prerotation

38
244/104R

Resiliently mounted

46
244/104CS

Coil spring

5
244/104FP

Fluid pressure

79
244/104LS

Leaf spring

5
244/900

Lightweight, winged, air vehicle (e,g,. ultralight or hang glider)

42
244/901

Having delta shaped wing

20
244/902

Having parachute type wing

46
244/904

Miscellaneous hardware or control

16
244/903

Powered

43
244/1R

Miscellaneous

422
244/1A

Lightning arresters and static eliminators

115
244/1N

Noise abatement

255
244/1TD

Trailing devices

129
244/3.1

Missile stabilization or trajectory control

552
244/3.15

Automatic guidance

490
244/3.21

Attitude control mechanisms

294
244/3.22

Fluid reaction type

258
244/3.2

Inertial

88
244/3.16

Optical (includes infrared)

562
244/3.18

Celestial navigation

24
244/3.17

Optical correlation

88
244/3.19

Radio wave

179
244/3.24

Externally mounted stabilizing appendage (e.g., fin)

269
244/3.27

Collapsible

201
244/3.28

Longitudinally rotating

170
244/3.29

Radially rotating

119
244/3.3

Extending beyond rear of missile

66
244/3.25

Removable

36
244/3.26

Sliding

37
244/3.11

Remote control

263
244/3.13

Beam rider

155
244/3.14

Radio wave

184
244/3.12

Trailing wire

109
244/3.23

Stabilized by rotation

155
244/110R

Retarding and restraining devices

66
244/110D

Aerodynamic braking

28
244/113

Aerodynamic retarders

73
244/110G

Arresting hoods

14
244/110A

Brake

36
244/110C

Cable or net support

66
244/110H

Friction brakes

9
244/110E

Landing platforms

49
244/110F

Snares

45
244/110B

Thrust reversers

333
244/112

Water brake arrangement

2
244/111

Wheel brake arrangement

156
244/138R

Safety lowering devices

128
244/139

Entire aircraft

86
244/142

Parachutes

116
244/144

Aircraft element convertible to parachute

3
244/145

Canopy construction

139
244/152

Control devices

166
244/143

Garment attached

12
244/151R

Harness

78
244/151B

Parachute load releasing

79
244/151A

Parchute harness connection

41
244/146

Inflated bracing

35
244/147

Storage and release

98
244/149

Opening devices

99
244/148

Packs

34
244/150

Timing mechanism

37
244/140

Passenger compartment

37
244/141

Seat

43
244/138A

Rotating vanes

15
244/158.1

Spacecraft

239
244/164

Attitude control

404
244/167

By gravity gradient

20
244/165

By gyroscope or flywheel

258
244/169

By jet motor

179
244/166

By magnetic effect

75
244/170

By nutation damper

61
244/168

By solar pressure

71
244/171

With attitude sensor means

274
244/171.6

Having launch pad cooperating structure

15
244/158.3

Inflated

35
244/159.4

Modular and assembled in space

86
244/159.5

Foldable

33
244/159.6

Including use of launch vehicle part

16
244/172.4

Rendezvous or docking

138
244/172.5

Including satellite servicing

68
244/158.9

Reusable or returnable

43
244/159.3

Having aerodynamic lifting body (e.g., space shuttle)

37
244/159.1

With reentry shield

119
244/159.2

Inflatable

23
244/158.4

Spacecraft formation, orbit, or interplanetary path

127
244/158.5

Orbit insertion

58
244/158.6

Orbital control

56
244/158.7

Aerobraking

17
244/158.8

Automatic

37
244/158.2

Tethered

41
244/172.6

With deployable appendage

176
244/172.2

With fuel system details

81
244/172.3

Fuel tank arrangement

36
244/173.1

With payload accommodation

123
244/173.3

And payload deployment

124
244/173.2

Including vibration control

41
244/171.1

With propulsion

153
244/171.3

Launch from surface to orbit

57
244/171.4

Horizontal launch

20
244/171.2

Steerable mount

14
244/171.5

Without mass expulsion

35
244/171.7

With shield or other protective means (e.g., meteorite shield, insulation, radiation/plasma shield)

150
244/171.8

Active thermal control

132
244/172.7

With solar panel

196
244/172.9

Having launch hold down means

23
244/172.8

Having solar concentrator

39
244/171.9

With special crew accommodations

31
244/172.1

Emergency rescue means (e.g., escape pod)

12
 
 
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