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Class Information
Number: 37
Name: Excavating >
Description: This class relates to the broad art of digging, moving, and handling material. This class includes method or apparatus for the removal of a tree, stone, soil, or snow from an in situ location, either on the earth"s surface or beneath a body of water.










Class Number Class Name No. of Patents
37/907

Automatic leveling excavators

56
37/307

Beneath a body of water (e.g., dredger)

47
37/314

Adapted to excavate specific discrete material

84
37/315

Shellfish

13
37/316

Including rake or scoop structure

26
37/313

By use of submarine or undersea vessel

41
37/338

Endless

32
37/339

Specific bucket structure

3
37/340

Grab

35
37/337

Rotary digger (e.g., bucket wheel)

23
37/341

Scoop or bucket

45
37/317

Suction

68
37/333

Draghead dredger (e.g., dustpan dredger)

20
37/318

Having intake screen

53
37/319

And material size reducer (e.g., crusher)

15
37/324

Including driven digger adjacent suction inlet (e.g., cutterhead dredger)

14
37/332

Endless

4
37/326

Rotary

21
37/331

Axis longitudinal with respect to suction pipe

23
37/329

Axis transverse with respect to suction pipe

47
37/330

Axis vertical with respect to surface of body of water

12
37/327

Specific cutterhead structure

12
37/328

Including distinct tooth or tooth mounting

13
37/325

With specific bearing, or means to lubricate or seal

14
37/335

Pipe or nozzle structure

52
37/336

With coupling (e.g., connector)

17
37/323

With fluid jet digger adjacent suction inlet

103
37/321

With means to introduce lift agent directly into suction pipe

41
37/322

With downstream directed jet nozzle

35
37/334

With pipe suspension or support (e.g., ladder structure)

33
37/320

With pumping chamber

44
37/309

With means to control dredger operation (e.g., movement of dredged material) in response to sensed condition

67
37/312

Control of swing or swing speed

7
37/311

Suction relief valve

11
37/310

Swell compensator

14
37/342

With means to scour or scrape (e.g., propeller means, digging teeth, plow)

18
37/344

Nozzle

31
37/343

Rotary digging element

15
37/308

With signal, scale, indicator, or inspection means

43
37/345

With vessel, propulsion, or anchor structure (e.g., bank spud, spud brace)

22
37/346

Bottom spud anchor

17
37/901

Bucket cleaners

38
37/394

Cable-operated (e.g., dragline)

22
37/395

Boom-type

25
37/396

Including means to control digging, hoisting, and dumping

38
37/397

Including mounting or support structure (e.g., boom support, sheave or pulley support)

58
37/398

Scoop or bucket

37
37/399

Including support or mounting device (e.g., hitch, shackle, lifting or dumping trunion)

30
37/400

Trolley-supported

7
37/401

Including cable or rope control means to facilitate loading, transporting, or dumping

18
37/908

Canal cleaners

6
37/461

Clamshell bucket

28
37/184

Common pivot

18
37/185

Crossed lever

5
37/186

Contiguous pivots

16
37/188

Link-connected

7
37/187

Spaced pivots

31
37/403

Combined or convertible

307
37/406

Combined with clamp, grapple, or shear

110
37/405

Combined with fork or rake

65
37/404

Combined with subsoiler

61
37/468

Having quick-connect coupling

305
37/407

With scraper

70
37/408

Integrally mounted to a tool body and independently usable by re- positioning the tool body

30
37/409

Multicomponent tool (e.g., scoop or bucket) convertible by relative movement of tool parts

42
37/410

Separate tools simultaneously mounted and independently usable

52
37/446

Digging edge

78
37/448

Corner guard (e.g., corner tooth)

35
37/451

Distinct wear element mounted between teeth

23
37/447

Oscillating or reciprocating

23
37/450

Removable digging edge having integral tooth adaptor

46
37/449

Repositionable digging edge (e.g., reversible)

21
37/460

Specific material (e.g., specialty steel, heat treatment of material, specific hardness test)

70
37/452

Tooth or adaptor

123
37/453

Having wear cap

54
37/455

Mounting or retaining means

148
37/456

Including pin or key

131
37/457

Having resilient elastomeric element

104
37/458

Having resilient metallic element

64
37/459

Wire or rod formed

20
37/454

Repositionable or replaceable tooth (e.g., reversible)

38
37/142.5

Ditch filler

116
37/347

Ditcher

65
37/348

Condition responsive

353
37/352

Having endless digger

89
37/353

Endless bucket

11
37/355

Longitudinal cut

28
37/362

Drive-related feature

26
37/363

Hand operated

13
37/358

Reciprocating endless digger

2
37/357

With distinct rotary digger

20
37/359

With longitudinal endless conveyor

8
37/356

With side cutters

6
37/360

With transverse endless conveyor

14
37/361

Drive-related feature

4
37/354

Transverse cut

0
37/350

Having screw digger

19
37/351

With conveyor

14
37/366

Plow

18
37/370

Mole plow

28
37/367

Slit ditcher

50
37/368

Including longitudinal endless conveyor

2
37/369

And transverse endless conveyor

1
37/378

With colter

1
37/373

With conveyor

2
37/375

Longitudinal endless conveyor

1
37/376

And transverse endless conveyor

1
37/377

With colter

0
37/374

Wheel and belt

3
37/372

With plow supported wheel or supported on wheel frame

3
37/379

Shovel or scoop

68
37/380

Slit ditcher

8
37/91

Wheel excavator

51
37/92

Longitudinal axis

11
37/93

Conveyor

10
37/94

Transverse axis

68
37/95

Conveyor

11
37/96

Longitudinal endless

20
37/97

Transverse endless

19
37/349

With crumber

15
37/364

With side or auxiliary cutter

25
37/365

Rotary

16
37/462

Endless digger

37
37/465

Digging chain, bucket, blade, or tooth structure, per se

71
37/463

With endless conveyor

8
37/464

Having nonbucket-type digging means

38
37/300

Grave digger

9
37/902

Hydraulic motors

16
37/301

Land clearer

43
37/303

Stone remover

16
37/302

Tree or stump remover

137
37/466

Miscellaneous

98
37/905

Nondredge excavating by fluid contact or explosion

19
37/182

Orange-peel buckets

2
37/3

Peat excavators

10
37/195

Processes

201
37/104

Railway graders

136
37/105

Side former

44
37/106

Scoop

7
37/107

Endless conveyor

12
37/381

Road grader-type

22
37/382

Condition responsive

53
37/383

Including ground supported, grader guiding rail

7
37/384

Adjustable digger

2
37/385

Rotary digger

0
37/393

Plow with inclined axis conveyor wheel

0
37/391

Plow with transverse conveyor wheel

2
37/392

And endless conveyor

0
37/389

Plow with transverse endless conveyor

6
37/390

Disc plow

1
37/386

Rotary digger

3
37/387

Adjustable

8
37/388

Transverse endless digger

4
37/189

Rotary digger

142
37/190

Endless conveyor

77
37/411

Scoop or excavating and transporting container

44
37/443

Dipper-type (e.g., backhoe bucket)

111
37/434

Manually operated (e.g., two-wheel barrow)

23
37/435

Mounted rearwardly of vehicle

9
37/436

Bowl operatively connected to wheel axle

1
37/437

Including rear unloading

0
37/438

Actuated by fluid means

1
37/440

Lever and latch mechanism

1
37/439

With caster wheel or shoe

2
37/441

Dumping runner or revolving-type

2
37/467

Handled or hand operated

1
37/442

Pushed forwardly of vehicle for filling

26
37/444

Scoop or bucket structure, per se

185
37/445

Including door structure or operator

23
37/412

Supported on vehicle between longitudinally spaced ground supports

11
37/414

Condition responsive or programmable means controls the excavating operation

136
37/415

Control of attitude or depth of cut

26
37/416

Control of scoop component (e.g., elevator, apron, or ejector)

36
37/424

With coaction between apron or elevator and bowl

3
37/425

Actuated by fluid means

5
37/426

With coaction between apron or elevator and ejector

7
37/419

With means to aid loading or load distribution

15
37/420

By auger

13
37/421

By digging movement of apron

0
37/422

By endless conveyor

17
37/423

With particular conveyor feature including drive means

14
37/431

With particular unloading feature

26
37/432

Rear unloading

2
37/433

Revolving-type

1
37/429

With significant apron structure or manipulation

7
37/430

Actuated by fluid means

7
37/427

With significant bowl structure or manipulation

6
37/428

Actuated by fluid means

12
37/417

With specific suspension or means to steer or facilitate mounting of implement on vehicle

41
37/418

With tandem or plural scoops or compartments

4
37/413

With alarm, indicator, signal, or inspection means

24
37/903

Scoop or scraper attachments

187
37/304

Self-loading vehicle

19
37/306

Elevating wheel

1
37/305

Having endless digger or conveyor

15
37/196

Snow or ice removing or grooming by portable device

34
37/241

Combined or convertible

54
37/242

Rotary excavating tool

24
37/243

Lawnmower

24
37/234

Including specific hydraulic control system to position implement

117
37/285

Manually powered

103
37/244

Motorized rotary excavating tool

67
37/259

Centrifugal impeller

28
37/248

Diverse multistage rotary tools or tool portions (e.g., feeding and throwing, etc.)

34
37/249

Including screw-type auger for first stage

24
37/251

And centrifugal impeller for final stage

25
37/252

Auger and impeller on single shaft

16
37/250

Augers on separate shafts

17
37/246

Electric motor drive

27
37/253

Fed by scraper blade

9
37/256

Including centrifugal impeller

11
37/254

Including screw-type auger

18
37/255

Augers on separate shafts

11
37/260

Having specific flow guide

46
37/261

Having motor powered adjustment

18
37/262

Vane within chute controls flow path

18
37/247

Rotor shaft adjustable relative to direction of travel

9
37/257

Screw-type auger

36
37/258

Having plural vane segments

13
37/245

Tool arresting means responsive to sensed condition

21
37/197

Process

44
37/198

Railway clearer

4
37/201

Explosive

2
37/202

Fluid current conveyor

6
37/203

For clearing single rail of set

2
37/204

Electrified rail

1
37/207

Including means clearing side of, or groove in, rail

3
37/205

Including rotary excavating tool

0
37/206

And scraper blade

0
37/209

Having rotary excavating tool

1
37/210

Plural rotary tools

1
37/212

And v-shaped scraper blade

1
37/211

Diverse tools performing different stages of operation

1
37/213

Screw-type auger

5
37/214

Having scraper blade

4
37/218

Diagonal

2
37/215

Inclined plane with v-divider

0
37/216

Having auxiliary blade or shiftable divider

3
37/217

V-shaped

6
37/208

With endless conveyor

3
37/199

With melter

9
37/200

Heated plow

3
37/264

Scoop

14
37/265

Manually powered

56
37/266

Scraper blade

158
37/279

Diagonally oriented

30
37/283

Adjustable about central vertical hinge

42
37/281

And auxiliary wing or extension

87
37/280

Including side gate discharge preventer

22
37/284

Manually powered

24
37/282

Supported on inclined plane

1
37/267

Invertible

17
37/270

Mounted on surface contacting support or guide

80
37/271

For adjusting height of blade

32
37/268

Pulled (e.g., by horse or vehicle)

49
37/269

V-shaped

8
37/272

V-shaped

15
37/273

Adjustable or collapsible apex

21
37/274

And auxiliary wing or extension

39
37/275

Top flap

5
37/276

Diverging forwardly

7
37/278

Manually powered

9
37/277

Supported on inclined plane

1
37/219

Snow or ice surface groomer

72
37/221

Having diverse tools

19
37/222

Including rotary tool

36
37/223

Having rotary tool

31
37/224

Compacting roller

13
37/220

Including rut cutter

12
37/263

Tool prepares wheel path for passage of wheel

8
37/235

Vehicle mount including power lift

57
37/236

Power means is hydraulically actuated piston

104
37/232

Vehicle mount with obstacle responsive trip, or yieldable tool (e.g., brush)

147
37/233

Resilient impeller or blade

69
37/225

With compressor die

4
37/226

And heater

4
37/237

With endless conveyor

12
37/238

And rotary excavating tool

12
37/240

Carrying excavating tool

7
37/239

Multistage conveyors

3
37/227

With melter

46
37/228

Having heated transport chamber

30
37/229

Electric or solar heat source

4
37/230

Manually powered

14
37/231

With specific means to facilitate connection to, or disconnection from, vehicle

263
37/904

Vibration means for excavating tool

84
37/906

Visual aids and indicators for excavating tool

20
 
 
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