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Class Information
Number: 475
Name: Planetary gear transmission systems or components >
Description: This is the class for planetary gear power transmission and elements thereof, such transmission being defined as an assembly of parts including interacting first and second gears each having a central axis and wherein, during at least one mode of operation, the axis of one of the gears follows a path extending around the axis of the other gear.










Class Number Class Name No. of Patents
475/900

Brake for input or output shaft

60
475/254

Condition responsive control

40
475/258

Centrifugally controlled clutch or brake

27
475/262

Axially engaged friction clutch

13
475/260

Centrifugal brake control

10
475/259

One-way clutch or brake

16
475/261

Positive clutch

5
475/256

Downshift responsive to high speed limit

15
475/255

Eccentrically weighted planet

21
475/263

Overload release

69
475/264

Spring applied friction drive establishing means

23
475/265

Drive establishing means is friction brake

27
475/257

Speed responsive control adjusted or opposed by torque

32
475/266

Stepped, torque responsive ratio change

30
475/267

With flywheel or centrifugal weight control

41
475/268

With planet pinion axis at angle to axis of mating gear (e.g., bevel gears)

13
475/14

Cyclical or intermittent drive

42
475/17

Multilated or noncircular gear in drive train

23
475/15

Plural outputs

17
475/16

With means to adjust cycle or drive during operation

36
475/220

Differential planetary gearing

85
475/230

Bevel gear differential

337
475/243

Output gear rotatable relative to axial support shaft

12
475/244

Support shaft coupled to other output gear

7
475/245

With roller bearing between output gear and shaft

9
475/242

Separate planet pinions or separate tooth set on same pinion for each output

9
475/231

With means to limit overspeed of one output (e.g., lock-up clutch)

300
475/234

By axial movement of output gear

37
475/235

With spring bias on gear or clutch

52
475/232

Centrifugal actuator

21
475/233

Lock-up clutch between pinion and pinion carrier

36
475/237

Manual actuator

52
475/238

Friction clutch

15
475/239

Plate clutch

26
475/236

Particular gear shape or tooth interaction limits overspeed

20
475/240

Spring bias on overspeed limiting means

40
475/241

Helically coiled spring

28
475/246

With roller bearing between gear and its support

50
475/247

Ball bearing

16
475/221

Differential or nondifferential planetary combined with differential (e.g., two differentials)

298
475/223

Including means to selectively apply rotational power to only one output

56
475/224

By braking other output

18
475/226

Planet pinion is worm gear

33
475/227

And spur gear on pinion

39
475/248

Spur gear differential

118
475/252

Intermeshing planet pinions

122
475/251

Pinion axis at angle intersecting axis of output

9
475/249

With means to limit overspeed of one output

190
475/250

Manual actuator

20
475/253

With roller bearing between gear and its support

12
475/225

With additional gearset between differential output and load

95
475/222

With universal joint in drive train

50
475/228

Worm drive on input shaft

14
475/229

And roller bearing supporting worm from casing

3
475/149

Electric or magnetic drive or control

264
475/150

Differential drive or control

258
475/151

Plural power paths

63
475/152

With nonplanetary drive to electric or magnetic path

13
475/153

With condition responsive control

83
475/154

With electric or magnetic controlled brake

61
475/155

And manual speed selector

4
475/156

Electric or magnetic device disengages brake

22
475/157

Electric or magnetic engaged brake and spring engaged lockup clutch

16
475/31

Fluid drive or control of planetary gearing

29
475/84

Control of differential planetary gearing

56
475/86

By fluid operated mechanical clutch

152
475/88

Operated by a pump responsive to differential action

90
475/87

Operated by viscous drag

21
475/89

Fluid resistance controls relative rotation of outputs

53
475/90

Fluid pumped by differential gears

20
475/85

Special fluid

51
475/32

Diverse fluid drives

11
475/114

Fluid control of friction planetary gearing

13
475/115

Stepless ratio change controlled

30
475/116

Fluid controlled mechanical clutch or brake

199
475/143

Expanding fluid motor chamber mechanically contracts second motor

14
475/144

Fluid controlled one-way devices

16
475/145

Fluid motor controls device through cam or lever

8
475/146

Fluid motor structure

81
475/147

Radially expanding motor

2
475/148

With one-way device

20
475/131

Manually actuated ratio selector

45
475/132

Electrical

38
475/134

Plural selector valves

17
475/135

Rotary valve

9
475/133

With safety valve

23
475/127

Pressure regulation

166
475/130

Manual regulator

12
475/128

Valving controls shift timing

136
475/129

With fluid accumulator

80
475/118

Speed responsive control

44
475/120

Pressure control

149
475/121

Ratio change

63
475/122

Speed responsive valve control

34
475/124

Centrifugal control

7
475/123

Electrical control

116
475/119

Safety device

87
475/140

Spring engaged, fluid released clutch or brake device

34
475/141

Plural devices simultaneously spring engaged

14
475/142

Single fluid motor engages one device and releases other

25
475/117

Temperature responsive control

40
475/125

Torque responsive control

57
475/126

Responsive to torque reversal

9
475/136

With ancillary pump or governor drive

42
475/137

Plural pumps

10
475/138

With positive clutch or brake

21
475/139

And friction synchronizer

3
475/72

Fluid pump and motor in one of plural paths to or from planetary gearing

175
475/78

Interrelated fluid unit and gear control

43
475/79

With constant speed ratio between input and one fluid unit

19
475/73

Plural fluid power paths to planetary gearing

49
475/74

Plural outputs

37
475/80

Plural speed ranges

100
475/81

With constant speed ratio between input and one fluid unit

60
475/82

Having single planet carrier

49
475/76

Speed responsive control

58
475/77

Constant speed output

6
475/75

Three pumps or motors

26
475/91

Fluid resistance inhibits relative rotation

31
475/112

Fluid container connected to planet pinion

4
475/92

Fluid damper for reaction element

6
475/113

Impeller-turbine type fluid unit used as brake

22
475/111

Planet clutched to fluid flywheel

4
475/93

Valve inhibits fluid flow

19
475/104

Fluid brake for planetary element

7
475/105

And fluid clutch

2
475/106

Bevel gearing

2
475/107

Sun or orbit braked

19
475/102

Fluid brake(s) for plural planetary elements

4
475/108

Fluid clutch includes gear type pump

11
475/99

Interrelated valve control and mechanical clutch or brake

5
475/100

Valve control and mechanical clutch

1
475/101

Pump pressure engages mechanical clutch

3
475/109

Planet clutched to carrier

5
475/110

With reversing means

2
475/103

Plural fluid clutches

1
475/94

Speed or torque responsive valve control

16
475/98

Centrifugally actuated valve controls fluid brake

1
475/95

Centrifugally actuated valve controls fluid clutch

8
475/96

Clutch connects planet pinion and carrier

1
475/97

With fluid brake control

1
475/47

Impeller-turbine type fluid circuit and mechanical path in parallel

29
475/52

And nonplanetary gearing

28
475/57

Orbit and carrier braked

4
475/58

Orbits braked

2
475/53

Planetary gearing divides paths

35
475/56

Sun and carrier braked

26
475/55

Sun and orbit braked

23
475/54

Sun, orbit and carrier braked

18
475/48

With control of or by the fluid circuit

12
475/50

Fill and empty type fluid circuit

9
475/49

Gearing controlled by fluid circuit condition

3
475/51

With speed responsive control

9
475/59

Impeller-turbine type fluid circuit in series with planetary gearing

62
475/60

And condition responsive control

13
475/61

Control of or by fluid circuit

12
475/62

Control responsive to relative impeller and turbine speeds

6
475/63

System or servo fluid pressure controlled

9
475/64

Fluid circuit controlled

9
475/65

By lock-up clutch actuation

52
475/71

And differential in series

62
475/66

And nonplanetary gearing

61
475/69

Fluid circuit controlled

13
475/70

Pressure controlled

12
475/68

With nonratio brake

12
475/67

With synchronizing of positive clutch or brake

6
475/33

Plural impeller-turbine type fluid circuits

11
475/34

Fill and empty type

8
475/83

Pump and motor in series with planetary gearing

174
475/35

Single impeller-turbine type fluid circuit divides or combines plural power paths

14
475/42

Control of or by fluid drive

7
475/36

Planetary gearing divides paths

10
475/44

Stator rotatable in reverse direction to provide drive

21
475/45

Turbine braked, stator provides reverse drive

8
475/46

And adds torque in forward drive

7
475/37

Three fluid outputs

2
475/38

And stator

1
475/39

Two fluid outputs and stator

5
475/41

And mechanical drive path

13
475/40

With variable fluid drive control

2
475/43

With speed or torque responsive clutch or brake control

20
475/1

Input from independent power sources

53
475/9

Bevel planet pinion in drive train

47
475/2

Condition responsive motor control

83
475/5

Including electric motor input

910
475/3

Including manual input

29
475/4

And electric motor input

75
475/10

Intermeshing planet pinions in drive train

39
475/8

One-way clutch or brake in drive train

56
475/6

Plural outputs

88
475/7

Worm gear in drive train

46
475/207

Nonplanetary variable speed or direction transmission combined with planetary transmission

173
475/208

Condition repsonsive

49
475/209

Interrelated control of in series transmissions

55
475/210

Nonplanetary transmission is belt or chain gearing

178
475/213

Nonplanetary transmission is chain gearing

31
475/211

Plural power paths to planetary gearing

108
475/212

Nonplanetary transmission is chain gearing

24
475/214

Nonplanetary transmission is friction gearing

95
475/215

Plural power paths to planetary gearing

68
475/216

Friction gear engages facing concave surfaces

143
475/217

Nonplanetary transmission is disc and wheel

37
475/219

Plural planetary units

110
475/218

Plural power paths to planetary gearing

161
475/901

Particular material

22
475/902

Nonmetallic

14
475/904

Particular mathematical equation

68
475/162

Planet periphery surrounds axis of interacting gear (e.g., eccentrically driven transmisson)

198
475/178

Circumferentially spaced connector pins

115
475/179

Roller bearing surrounds pin

54
475/165

Friction gearing

20
475/166

Variable speed

59
475/176

Gear has plural circumferential tooth sets

62
475/177

Internal and external tooth sets

58
475/168

Gear teeth comprise rolling bodies

111
475/167

Link chain gearing

10
475/169

Means to change speed ratio between input and output

40
475/172

Condition responsive control

9
475/173

Plural planetary elements braked

11
475/171

Plural power paths to planetary gearing

4
475/170

Variable eccentricity

88
475/181

Particular counterweight

28
475/180

Particular gear tooth

83
475/174

Plural outputs

25
475/163

Wabbler transmission

54
475/164

Single member has oppositely axially facing tooth sets

25
475/175

With releasable clutch or brake

28
475/182

Planet pinion engages flexible belt or chain

39
475/183

Planet pinion is friction gear

83
475/196

Planet pinion is ball

63
475/197

Planet pinion rotatable about axis at angle to axis of input or output gear

16
475/184

Plural outputs (e.g., differential)

26
475/195

Torque responsive means to increase contact pressure

50
475/185

Variable speed ratio (without slippage)

34
475/186

Condition responsive ratio change

41
475/189

Planet pinion is a ball

53
475/190

Planet pinion rotatable about axis at angle to axis of input or output gear

12
475/193

Conical or frusto-conical planet pinion

43
475/194

Torque responsive means to increase contact pressure

27
475/191

Planet pinion is member having axis fixed or adjustable to position perpendicular to axis of input or output gear

12
475/192

Pinion engages facing concave surfaces (e.g., mounted in torus)

24
475/187

Releasably braked element

9
475/188

Plural elements releasably braked

5
475/331

Planetary gearing or element

498
475/336

Axis of planet pinion at angle intersecting rotational axis of mating gear (e.g., bevel gears)

53
475/338

Coaxial teeth around planet pinion engage axially spaced relatively rotatable gears

78
475/341

Engage plural relatively rotatable orbit gears

48
475/342

And sun gear

80
475/339

Engage plural relatively rotatable sun gears

87
475/340

And orbit gear

31
475/346

Floating or flexible coupling or support

193
475/347

Resilient member

172
475/334

Floating support annulus in rolling contact with planet pinion

20
475/343

Nonplanetary gearing combined with planetary

107
475/344

Particular gear tooth feature

123
475/345

Nonmetallic or resilient

31
475/333

Planet pinion is worm gear

18
475/348

Planet pinion supported by roller bearings

91
475/332

Plural outputs

61
475/337

Plural planet carriers in series move at different speeds

71
475/335

Toothed planet pinion has smooth bearing surface engaging raceway on sun or orbit gear

29
475/349

With manual input

30
475/329

Plural power paths to planetary gearing

57
475/330

Plural planetary units

284
475/12

Reversal of direction of power flow changes power transmission to alternate path

49
475/13

Input and output exchange functions

8
475/11

Rotary planetating output

32
475/903

Stacked planetary gearing

33
475/18

Steering by driving

39
475/27

Fluid steer control

13
475/19

With condition responsive steer control

29
475/20

With cooling or lubrication

4
475/21

With infinitely variable drive

8
475/25

Belt type

6
475/22

Variable drive is fluid drive

9
475/23

Hydrostatic type

41
475/24

Plural pump-motor sets

34
475/26

Variable drive is friction drive

11
475/29

With planetary reaction brake steering

16
475/30

And carrier input to planetary gearing

10
475/28

With plural power paths to a planetary transmission at each output

50
475/198

Variable speed or direction transmission combined with differential

135
475/199

Condition responsive

35
475/200

Differential is beneath prime mover or transmission

84
475/201

Differential is between prime mover and transission in the path of power flow

34
475/203

Plural selectively driveable gears surround differential

25
475/206

Transmission output shaft parallel to differential output shafts

217
475/204

Variable speed or direction is planetary transmission

202
475/205

Plural planetary units combined with differential

111
475/202

With universal joint in drive train

29
475/158

With indicator or alarm

38
475/159

With lubricaton

297
475/160

For differential planetary gearing

159
475/269

With means to vary drive ratio or disconnect drive (e.g., brake or clutch)

172
475/306

Brake for planetary transmission having axis of planet pinion at angle to axis of mating gear (e.g., bevel gears)

14
475/308

And lock-up clutch

7
475/309

Friction clutch

1
475/310

Plate clutch

3
475/307

Including one-way clutch or brake

6
475/301

Brake or clutch on surface of helically coiled member

18
475/323

Carrier braked

125
475/326

And lock-up clutch

30
475/327

Friction clutch

10
475/328

Plate clutch

17
475/324

Including one-way clutch or brake

47
475/325

Intermeshing planet pinions on single carrier

57
475/298

Gear shiftable axially to disconnect or vary ratio

102
475/299

Orbit shiftable relative to sun and carrier

75
475/300

Sun shiftable relative to orbit and carrier

34
475/305

Including releasable clutch directly between planet pinion and carrier

13
475/270

Manual force provides reaction during drive

26
475/302

Nonplanetary gearing combined with planetary

110
475/317

Orbit braked

153
475/320

And lock-up clutch

53
475/321

Friction clutch

12
475/322

Plate clutch

33
475/318

Including one-way clutch or brake

57
475/319

Intermeshing planet pinions on single carrier

39
475/304

Planet pinion is worm gear

3
475/296

Plural drive ratios other than unity

174
475/297

Including one-way clutch or brake

106
475/271

Plural elements selectively braked

71
475/273

Axis of planet pinion at angle to axis of mating gear (e.g., bevel gears)

6
475/274

And additional planetary gearset having axis of pinion parallel to axis of mating gear

2
475/286

Brake for orbit and carrier

174
475/287

Including one-way clutch or brake

32
475/284

Brake for sun and carrier

242
475/285

Including one-way clutch or brake

109
475/282

Brake for sun and orbit

226
475/283

Including one-way clutch or brake

53
475/280

Brake for sun, carrier and orbit

232
475/281

Including one-way clutch or brake

113
475/292

Including one-way clutch or brake

25
475/290

Plural orbits braked

89
475/291

Including one-way clutch or brake

14
475/288

Plural suns braked

133
475/289

Including one-way clutch or brake

43
475/275

Transmission includes three relatively rotatable sun gears

454
475/279

With brake for plural orbits

77
475/277

With brake for plural sun gears

119
475/278

And brake for carrier

137
475/276

With brake for sun, carrier and orbit

357
475/272

With preselection

4
475/295

Plural outputs

99
475/294

Ratio shift initiated by reverse rotation of input shaft

19
475/293

Speed responsive clutch or brake

31
475/311

Sun braked

97
475/314

And lock-up clutch

27
475/315

Friction clutch

8
475/316

Plate clutch

18
475/312

Including one-way clutch or brake

65
475/313

Intermeshing planet pinions on single carrier

29
475/303

With synchronizing clutch or brake

88
475/161

With transmission cooling or heating means

56
 
 
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