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Class Information
Number: 123
Name: Internal-combustion engines >
Description: This class contains inventions relating to prime movers or engines in which a combustible material is burned within an inc losed space or chamber and the heat energy thus developed converted into work by permitting the resulting products of combustion to act upon and through mechanical powers, the engine in question including suitable mechanism whereby the functions above enumerated are continually and automatically carried out, and such engine being designed to communicate power to some machine or device exterior to itself.










Class Number Class Name No. of Patents
123/198R

Accessories

235
123/198B

Antitheft valves and locks

55
123/198DA

Bearing wear, cylinder, oil drain, auto ignition

20
123/198E

Covers, trays, vibrators, corrosion inhibitors, air filters

1031
123/198F

Cylinder cut out

882
123/198A

Decarbonizers and antiknocks

197
123/198DB

Fuel cut-off

518
123/198DC

Ignition cut-off control

227
123/198P

Pressurizing - crankcase, clutch housing, transmission housing

14
123/198C

Pumps

211
123/198D

Safety devices

955
123/DIG.2

Accumulated fuel return to tank or engine-induction system

13
123/26

Additional air supply

83
123/48R

Adjustable combustion chamber

113
123/48D

Auxiliary chamber

32
123/48C

Cylinder or sleeve-moved

51
123/48A

Piston in head adjusted manually or mechanically

51
123/48AA

Piston in head adjusted

32
123/48B

Piston varied by means in crankshaft, connecting rod or piston

263
123/DIG.11

Antidieseling (stopping)

72
123/38

Atmospheric

0
123/27R

Burning by highly compressed air

74
123/27GE

Gas engines (diesel type) convertible from liquid to gas or operable with liquid and gas

189
123/27A

Oil engine air preheated

1
123/434

Charge forming device (e.g., pollution control)

142
123/704

Air/fuel ratio prior to combustion responsive means

74
123/443

Alternate or simultaneous lean-rich

133
123/531

Auxiliary air or gas used to inject fuel

254
123/534

Air is bled from another engine cylinder

17
123/532

Air is bled from the cylinder on the compression stroke in that cylinder

36
123/535

Constant fuel level

2
123/533

Having a separate pump for the air or gas

162
123/585

Auxiliary air or oxygen added to combustible mixture

520
123/588

Oxidant controlled by engine temperature

98
123/587

Oxidant controlled by intake manifold vacuum

151
123/586

Oxidant controlled by throttle

70
123/437

Auxiliary control of carburetor fuel metering

75
123/438

By electrical or electronic control system

222
123/439

Variable venturi carburetor

44
123/441

By mechanical speed sensor

3
123/590

Charge-mixing device in intake (e.g., device which insures the atomization of the combustible mixture)

299
123/592

By fan means

63
123/593

By screen means

76
123/591

Having liquid fuel collector

20
123/525

Combined liquid and gaseous fuel

326
123/526

Diesel engine convertible from liquid to gas

64
123/536

Combustible mixture ionization, ozonation, or electrolysis

213
123/539

Air only

68
123/537

Before intake valve (e.g., in manifold)

64
123/538

Fuel only

281
123/530

Constant flow fuel supply

11
123/540

Cooling of combustible mixture

46
123/542

Air only

58
123/541

Fuel only

133
123/572

Crankcase vapor used with combustible mixture

623
123/574

Specific control valve (e.g., pcv valve)

157
123/573

Vapor treated before mixing with combustible mixture (e.g., cooling)

216
123/575

Diverse fuel supply

478
123/576

Fuel switched in response to engine starting condition

77
123/578

Fuel switched in response to engine temperature

43
123/577

Fuel switched, condition responsive to load

85
123/568.11

Exhaust gas used with the combustible mixture (e.g., emission control exhaust gas recirculation (egr) valve)

370
123/568.19

Egr valve position controlled only in relationship to intake throttle valve position

74
123/568.12

Exhaust gas cooled during recirculation

498
123/568.21

Having electrically actuated control means

473
123/568.22

Ambient condition responsive (e.g., atmospheric temperature, atmospheric pressure)

71
123/568.26

Having electromechanical actuator control of egr valve

107
123/568.27

Controlling vacuum actuator

194
123/568.28

Including auxiliary vacuum pump

39
123/568.23

Having rotary actuator control of egr valve

68
123/568.24

Electrical rotary actuator rotates the egr valve

89
123/568.25

Vacuum actuator control of egr valve

9
123/568.15

Having exhaust gas mixed with a constituent before entry into intake manifold

109
123/568.13

Having recirculation path formed entirely in the cylinder block or head

66
123/568.17

Having specific exhaust gas outlet structure at intake manifold

206
123/568.18

Having a valve located at the outlet of the egr passage

122
123/568.14

Internal exhaust gas recirculation (e.g., exhaust gas retained in the combustion chamber)

267
123/568.2

Plural egr valves in the recirculation passage

150
123/568.29

Vacuum actuator control of egr valve

129
123/568.32

Having fixed restriction in vacuum line

29
123/568.3

Including auxiliary vacuum pump

13
123/568.31

Temperature responsive

33
123/568.16

With electrical means for fail-safe, backup, or malfunction detecting of egr system

170
123/510

Fuel flow regulation between the pump and the charge-forming device

338
123/516

Air or fuel vapor purging system

710
123/517

Carburetor float bowl drain

11
123/514

Excess fuel returned to tank

676
123/515

Regulator controls flow of a plurality of fuels

23
123/511

Regulator means adjusts fuel pressure

155
123/512

Engine parameter responsive

43
123/513

Environmental condition responsive

4
123/445

Fuel injection system

229
123/467

Drip prevention means at injector nozzle

660
123/472

Electrically actuated injector

313
123/475

Actuated by ignition pulse

24
123/478

Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)

1057
123/492

Acceleration or full load condition responsive

531
123/479

Backup systems, fail-safe, failure indicator

477
123/482

Circuit activates valve for continuous fuel flow

28
123/493

Deceleration condition responsive

335
123/481

Engine cylinder cutout

440
123/486

Having a digital memory addressed by an engine parameter

305
123/487

Having an up or up-down counter in circuit

100
123/480

Having microprocessor

716
123/483

Having plural multivibrators

31
123/485

Having ramp generator

25
123/484

Having single multivibrator

15
123/494

Having specific transducer

695
123/490

Injector solenoid drive

438
123/491

Starting condition responsive

593
123/488

Subcircuit operates on a parameter sensor output before input to main fuel control (e.g., function generator)

236
123/476

Magnetically actuated switching

67
123/473

Mechanically actuated switching

6
123/474

Ignition distributor used as switch

7
123/477

Radiation actuated switching

13
123/446

Fuel pump flow regulation

822
123/452

Nonsequential distributor

98
123/456

Common rail system

896
123/455

Distributor and metering unit are in common housing

46
123/453

Enrichment of the combustible mixture for cold starting or cold running

49
123/454

Equal pressure valve type

86
123/457

Regulating means adjusts fuel pressure

238
123/465

Barometric responsive

16
123/459

Bleed off valve

146
123/462

By throttle control

41
123/458

Electric regulator

522
123/466

Having an antitampering device

10
123/461

Having vapor returned to tank or pump inlet

18
123/463

Manifold pressure responsive

157
123/460

Series regulator

35
123/464

Temperature responsive

43
123/448

Sequential distributor

14
123/451

Reciprocating distributor

22
123/449

Rotary and reciprocating distributor

181
123/450

Rotary distributor

288
123/447

With accumulator

539
123/468

Having a specific shape, material, or location of fuel line

402
123/469

Specific fuel line mounting means

174
123/470

Injection nozzle mounting means

652
123/471

Nozzle isolated from manifold vacuum effect

8
123/527

Gaseous fuel and air mixer

467
123/529

Safety device (e.g., cutoff)

43
123/528

Supercharged engine

28
123/444

Having fluidic logic control means

13
123/518

Having fuel vapor recovery and storage system

378
123/519

Having an adsorbent canister

646
123/520

Purge valve controlled by engine parameter

1100
123/521

Responsive to secondary air pressure

35
123/543

Heating of combustible mixture

111
123/555

Air and fuel heated separately

23
123/556

Air only

202
123/552

Automatic control

168
123/547

Combustible mixture and heating meduim adjoin one another

119
123/546

Combustible mixture surrounds heating medium

66
123/554

Combustible mixture, air, and fuel are heated separately

12
123/550

Combustion heater

45
123/551

Part of combustible mixture is burned

29
123/549

Electric heater

464
123/557

Fuel only

685
123/558

Fuel is heated to ignition temperature

40
123/545

Heating meduim surrounds combustible mixture

117
123/553

Intermediate fluid used for heating

39
123/544

Lighter fuel is used during starting

10
123/548

Trap for liquid particle vaporization

61
123/435

Including cylinder pressure or temperature responsive means

698
123/672

Including exhaust gas condition responsive means

247
123/677

Combined with ambient condition responsive means (e.g., pressure)

62
123/678

Ambient temperature responsive

34
123/679

Combined with engine condition responsive means

138
123/689

Engine fluid or engine component temperature responsive

101
123/681

Engine load responsive

188
123/682

Acceleration or deceleration responsive

161
123/684

Pressure downstream of throttle valve responsive

104
123/683

Throttle position responsive

106
123/680

Idling responsive

85
123/688

Inoperative sensor responsive

292
123/687

Speed responsive

152
123/685

Starting or warmup responsive

88
123/686

Engine coolant temperature responsive

82
123/703

Exhaust gas composition sensor

152
123/676

Exhaust gas temperature or pressure repsonsive

291
123/691

Multiple sensors controlling group of cylinders

151
123/692

Controlling plural groups of cylinders

74
123/698

With addition of secondary fluid (e.g., fuel or exhaust gas)

278
123/699

Secondary fluid is auxiliary air or oxygen (e.g., carburetor air bleed)

85
123/700

Fed to air/fuel mixture

80
123/701

With auxiliary control of carburetor

48
123/702

Variable venturi carburetor

20
123/693

With compensator for sensor output (e.g., current or voltage)

58
123/697

Heater for sensor or sensor environment

155
123/694

Output fed to compensating circuit

137
123/696

Proportional or integral circuit

193
123/695

Variable reference value

65
123/690

With fail-safe, backup, or malfunction means

193
123/674

With modifying or updating memory (i.e., learning)

447
123/675

Acceleration or deceleration responsive

61
123/673

With sensor controlling each cylinder individually

178
123/436

Including means responsive to instantaneous change in engine speed

617
123/442

Injection or carburetion system having a series of throttle valves

106
123/523

Liquid fuel evaporating by extended fuel film

64
123/524

Screen or mat

22
123/522

Liquid fuel evaporating by submerged air supply

49
123/579

Multiple carburetors

48
123/580

Each carburetor feeds a cylinder or group of cylinders (e.g., split engine)

46
123/582

Separate carburetor for high load

7
123/581

Separate carburetor for starting

4
123/583

With linkage between carburetor throttle valves

31
123/584

Staged opening of carburetor throttle valves

17
123/567

Oxidant is solely oxygen

17
123/559.1

Supercharger

471
123/564

Boost control

236
123/566

Funnel-type supercharger (e.g., ram-air)

8
123/563

Intercooler

297
123/562

Multiple superchargers

131
123/559.2

Pressure exchange with exhaust gas

59
123/565

Supercharger is driven independently of the engine

72
123/560

Two-cycle compressor feeds a four-cycle engine

23
123/561

Variable ratio compressor driven supercharger

75
123/559.3

With clutch

83
123/495

With fuel pump

248
123/497

Electric fuel pump

338
123/498

Piezoelectric drive

148
123/499

Solenoid drive

73
123/505

Fuel pump and intake air controls interconnected

36
123/506

Having pressure relief valve

529
123/507

Pumping member driven by a piston or valve of the internal combustion engine

18
123/508

Pumping member driven by the internal combustion engine valve operating mechanism

135
123/509

Specific location or mounting of pump

682
123/500

Variable beginning and ending of pumping stroke

193
123/501

Variable beginning of pumping stroke

337
123/502

Fluid pressure control

308
123/503

Variable ending of pumping stroke

127
123/496

Variable rate of injection stroke

195
123/504

Variable stroke

52
123/2

Combined devices

174
123/3

Generating plants

612
123/310

Combustion chamber having multiple spark gaps

93
123/429

Combustion chamber means combined with air-fuel mixture forming means

22
123/432

Air or combustible mixture entering the combustion chamber through plural inlets

522
123/433

One inlet is uncovered by piston travel

28
123/431

Having a single combustible mixture inlet combined with means for injecting additional fuel into the combustion chamber

242
123/430

Stratification in combustion chamber

134
123/294

Combustion chamber means having fuel injection only

119
123/302

Air entering combustion chamber through plural inlets

133
123/303

Having inlet uncovered by working piston

5
123/297

Combination igniting means and injector

102
123/295

Combustible mixture stratification means

694
123/305

Having a particular relationship between injection and ignition characteristics (e.g., nozzle location, spray pattern, timing relative to igniter location, timing)

865
123/301

Injected fuel spraying into whirling fluid

153
123/304

Injecting diverse fuels or different states of same fuel

184
123/298

Injection of fuel onto igniter, deflector, heater, or atomizer

228
123/296

Injector is an integral part of engine valve

22
123/299

Using multiple injectors or injections

825
123/300

Alternating multiple injectors (e.g., series injection)

295
123/657

Combustion chamber

34
123/660

An acoustic cavity used to attenuate detonation shock waves (e.g., bodine)

13
123/663

Annular combustion chamber

13
123/667

Asymmetric combustion chamber

9
123/664

Combustion chamber shape is a figure of revolution

18
123/666

Hemispherical

10
123/665

Spherical

2
123/671

Cylinder head shape conforms to piston shape

17
123/670

Having catalytic cambustion aid

43
123/668

Having coating or liner

155
123/669

With means for mounting coating or liner

50
123/659

Having groove to aid combustion

10
123/661

Having squish area

132
123/658

L- or t-shaped

11
123/662

Multiple annular combustion chambers

5
123/21

Convertible cycle

66
123/DIG.7

Convertible

43
123/41.01

Cooling

173
123/41.56

Air-cooled

82
123/41.7

Engine encasing air duct; e.g., cowling

187
123/41.69

Finned cylinder and/or head

48
123/41.58

Flow-regulating means

39
123/41.59

Adjustable discharge

11
123/41.67

Jacketed cylinder

17
123/41.68

Spiral passages

3
123/41.6

Steam dividing vanes, baffles, conduits, or the like for multiple cylinders

12
123/41.62

Air duct with discharge ports or conduits

17
123/41.61

Individual deflecting cylinder baffles

10
123/41.63

With impelling means

24
123/41.65

Fan type

151
123/41.66

Suction

29
123/41.64

Jet type

16
123/41.57

With liquid cooling

49
123/41.02

Automatic coolant flow control

78
123/41.11

Air impeller

69
123/41.12

Temperature-responsive

300
123/41.03

Float control

2
123/41.04

Shutters, air valves, dampers or adjustable cowls

38
123/41.07

Interrelated shutter and throttle control

0
123/41.06

Servomotor-operated type

20
123/41.05

Temperature and engine operation responsive

93
123/41.08

Valves for fluid coolant

199
123/41.09

Coolant source bypass

69
123/41.1

Radiator or condenser source

334
123/41.55

Combined

26
123/41.18

Convertible

11
123/41.17

Coolant released into cylinder or valve passages

10
123/41.16

Coolant sealed in cylinder valve or piston

8
123/41.48

Devices for cooling liquid by air flow

30
123/41.49

Fan type

392
123/41.52

Engine or cylinder-mounted heat dissipators

11
123/41.53

Hopper type

1
123/41.15

Indicators and safety devices

199
123/41.34

Internal cooling of moving parts; e.g., hollow valves, pistons, and movable cylinder

34
123/41.35

Piston

193
123/41.37

Hollow piston rod

10
123/41.38

Wrist pin type; e.g., nonrigidly connected

21
123/41.39

Side wall opening

15
123/41.36

Telescoping piston and stationary conduits

11
123/41.41

Poppet-type valves

20
123/41.4

Rotary valves

20
123/41.13

Interrelated coolant flow and throttle control

30
123/41.42

Liquid coolants other than water and water treatment

71
123/41.3

Mixed air and liquid

9
123/41.43

Movably mounted tank or radiator

17
123/41.28

Multiple cylinders with equalized cooling

27
123/41.29

Parallel flow

160
123/41.71

Plural materials

12
123/41.51

Plural radiators and/or tanks in series

91
123/41.19

Refrigerating cycle

13
123/41.14

System drained and/or heat-storing

110
123/41.85

Valve seats or guides

35
123/41.31

With cooling of additional parts or materials

431
123/41.33

With lubricant heat exchange

190
123/41.32

With spark plug heat exchange

20
123/41.72

With jacketed head and/or cylinder

113
123/41.83

Cylinder detachable

18
123/41.84

Flanged cylinder or liner

115
123/41.81

Cylinder jacket supported solely by cylinder

22
123/41.73

Jet or spray within jacket

8
123/41.74

Multiple cylinder

166
123/41.75

Reentrant head

2
123/41.76

With cooled valve seats or guides

16
123/41.78

Cylinder side wall valves

5
123/41.77

Poppet-type valves

24
123/41.82R

With head-cooling arrangements

240
123/41.82A

Composite head

14
123/41.79

With passages, baffles, etc.

103
123/41.8

Spiral passages

9
123/41.44

With liquid coolant circulating means

283
123/41.46

Common drive for pump and fan

32
123/41.47

Engine shaft driven

61
123/41.45

Jet pumps

3
123/41.2

With vapor generation and/or condensing

24
123/41.21

Coolant circulation with condensing

72
123/41.23

Entrained in secondary circuit

3
123/41.24

From top of jacket to bottom of radiator

2
123/41.22

Intake or carburetor connection

5
123/41.27

Overflow vent to condenser

71
123/41.26

Vapor only circulated

4
123/41.25

Water bypasses condenser

7
123/41.54

With vent

159
123/41.5

Yielding or resilient walls

23
123/DIG.5

Crankcase pressure-operated pumps

34
123/41.86

Crankcase ventilation

158
123/DIG.6

Detachable

18
 

Double-acting

 
123/63

Four-cycle

25
123/61R

Two-cycle

37
123/62

Combined pump and motor cylinder

14
123/61V

Lengthwise scavenging of cylinders from cylinder head to piston

3
123/250

Engine means having internal vaporizing in prechamber with all combustion in main chamber

13
123/252

Vaporizing by a hot surface of prechamber

6
123/251

Whirling in prechamber

4
123/319

Engine speed regulator

106
123/345

By changing valve lift

78
123/346

Intake valve lift altered

45
123/347

By changing valve timing

107
123/348

Intake valve timing altered

85
123/344

Charge proportion varying (e.g., the fuel-air ratio is varied)

45
123/402

Charge volume varying (e.g., total amount of mixture fed to engine is varied; relative amounts of air and fuel are fixed)

14
123/405

By engine operated valve

16
123/404

Suction operated supply valve lift regulating

4
123/403

Throttling (e.g., volume varying using throttle valve)

175
123/332

Engine speed reduction by fuel cutoff

56
123/333

By electric means

154
123/330

Engine speed reduction by overriching the combustible mixture (e.g., choking engine)

12
123/331

By electric means

9
123/334

Engine speed reduction by partial or complete omission of the ignition

21
123/335

By electric means

157
123/338

Fuel injection pump bypass control

8
123/349

Having condition responsive means with engine being part of a closed feedback system (e.g., cruise control)

70
123/394

By combustion air or air-fuel mixture cutoff

6
123/350

Electrical sensing or regulating

322
123/362

Cold engine control

21
123/351

Engine overspeed sensing with an indicator or alarm and speed regulation

52
123/352

Engine speed sensing having an error signal producing circuit

445
123/360

Circuit controls a fluid throttle operator (e.g., vacuum)

100
123/361

Circuit controls an electric throttle operator

476
123/356

Circuit resonates (e.g., tuned) at governed speed

3
123/357

Electric fuel injection pump governor

449
123/359

Fail-safe feature (e.g., cuts off fuel pump)

81
123/358

Max-min governor (i.e., no control in between)

37
123/355

Having phase difference detector

5
123/353

Having variable duty cycle multivibrator (e.g., length of "time on" in each cycle)

30
123/354

Having variable frequency multivibrator (e.g., number of "time ons" per unit of time)

2
123/378

Fluidic sensor or regulator

52
123/390

Fuel injection pressure governor

10
123/379

Fuel injection pump governor

16
123/380

Barometric sensor

30
123/384

Floating piston-type governor (e.g., bessiere)

2
123/381

Fuel viscosity sensor (e.g., temperature sensing)

56
123/385

Liquid fluid governor

35
123/387

Fuel pressure sensor

93
123/386

Lubrication pressure sensor

17
123/388

Override for basic mechanical governor

8
123/382

Manifold pressure sensor

53
123/383

Supercharger

87
123/389

Intake manifold vacuum responsive

78
123/392

Responsive to cooling fan airflow

14
123/393

Responsive to exhaust gas

12
123/391

Responsive to intake airflow

24
123/363

Mechanical sensor or regulator

29
123/375

Fuel injection pressure governor

6
123/364

Fuel injection pump governor (e.g., diesel)

70
123/370

Acceleration responsive

25
123/372

Biased axial link (e.g., sliding rod with spring return)

51
123/371

Deceleration responsive

6
123/365

Governor override

70
123/366

Engine starting or warm-up control

54
123/367

Variable throttle or control rod stop

38
123/373

Pivoted link connected to pump rack

125
123/374

Movable fulcrum (e.g., slot and pin)

44
123/369

Three-dimensional cam control

18
123/376

Throttle positioning

140
123/377

Safety override of dangerous manual position

15
123/336

Having plural throttle valve structure

310
123/339.1

Idle speed control

112
123/339.12

And air-fuel ratio feedback controlled

61
123/339.29

By overriding injection pump governor

24
123/339.11

By regulating spark ignition timing

154
123/339.14

Electrically operated control means

105
123/339.19

By engine speed error feedback

120
123/339.21

And integral or derivative control

85
123/339.22

And temperature responsive

99
123/339.23

Controlling throttle bypass

153
123/339.2

Dynamic state variable model

29
123/339.16

External load condition responsive

90
123/339.18

Accessory load (e.g., lights, heater blower motor, radiator fan motor, generator) on engine electrical system responsive

62
123/339.17

Air conditioner operating mode responsive (i.e., compressor on-off)

99
123/339.27

Including linear reciprocating solenoid control device

60
123/339.28

Having valve controlled vacuum actuator

44
123/339.25

Including rotary actuator

52
123/339.26

Stepping motor type

33
123/339.24

Temperature responsive

104
123/339.15

With fail-safe, backup, or malfunction detecting means

81
123/339.13

Manual adjustment

54
123/395

Open loop condition responsive

27
123/401

Fluidic device between input and regulator

61
123/399

Having an electrical device between input and speed regulator

1271
123/400

Mechanical connection between input and speed regulator

213
123/396

Resistance or override acts on input connection to regulator

314
123/397

Shutdown safety device

58
123/398

Throttle position lock

42
123/343

Regulator accessory (e.g., cleaner, adjusting tool, etc.)

10
123/342

Regulator changes length of accelerator linkage

72
123/320

Responsive to deceleration mode (e.g., engine acting as a brake)

110
123/327

Auxiliary air fed to the engine

115
123/325

Deceleration responsive cutoff of fuel to engine (e.g., pollution control)

197
123/326

Rich resupply of fuel at end of deceleration

44
123/323

Exhaust throttling or blocking

201
123/329

Having means to retard spark (e.g., ignition timing)

20
123/328

Idle jet bypassed by a slight opening of the throttle

22
123/324

Part of the air or combustible mixture to the engine cylinder omitted

28
123/321

Valve timing altering means (e.g., axially sliding cam shaft)

317
123/322

Electrical means adapted to alter valve timing

138
123/337

Specific throttle valve structure

498
123/DIG.9

Flame ignition

10
123/DIG.10

Fluidic amplifier fuel control

11
123/311

Four-cycle

39
123/84

Adjacent supply and exhaust valves

2
123/85

Aligned supply and exhaust valves

2
123/317

Crankcase compression of air or combustible mixture to be subsequently pumped into the working cylinder

51
123/312

Engine cylinder having a reciprocating sleeve valve

6
123/313

Having a junk ring seal

0
123/314

Having sleeve valve lubrication means

6
123/316

Having subcharger associated with the cylinder

148
123/87

Longitudinal valve and lever

0
123/315

Multiple exhaust

113
123/86

Opposite supply and exhaust valves

0
123/81R

Oscillating valve

8
123/81D

Disc valve

3
123/81B

Oscillating valve - not sleeve or disc

15
123/81C

Sleeve valve

14
123/318

Rear compression of air or combustible mixture to be subsequently pumped into the working cylinder

22
123/82

Rotating side shaft

2
123/83

Rotating transverse shaft

3
123/80R

Rotating valve

24
123/80D

Disc valve

30
123/80DA

Rotary plug

5
123/80BB

Rotary valve is parallel to cylinder

27
123/80BA

Rotary valve is perpendicular to cylinder

68
123/80C

Sleeve valve

17
123/76

Scavenging

21
123/79R

Single poppet valve

35
123/79C

Concentric valves; relatively movable

39
123/79A

Rotary valve and poppet which extends through rotary valve

6
123/77

Single revolution

1
123/89

Transverse valve and bell crank

1
123/88

Transverse valve and lever

2
123/78R

Variable clearance

68
123/78D

Auxiliary chamber

19
123/78C

Cylinder or sleeve moved

41
123/78A

Piston in head adjusted mechanically

39
123/78AA

Piston in head adjusted by fluid means

26
123/78E

Varying means is in the connecting rod

123
123/78F

Varying means is in the crankshaft

101
123/78B

Varying means is in the piston

60
123/78BA

Varying means is in the piston connection

57
123/195R

Frame construction

474
123/195C

All covers

674
123/195A

Auxiliaries, brackets

296
123/195E

Electrical

40
123/195HC

Horizontal cylinder

77
123/195H

Horizontal stress members

114
123/195AC

Inclined cylinder

44
123/195P

Outboard motor frames

174
123/195S

Sheet metal frames

38
123/46R

Free piston

179
123/46E

Electric generating means

54
123/46H

Hammer

43
123/46B

Phasing means between two or more units

17
123/46SC

Single chamber; one piston

173
123/46A

Two chambers; one piston

28
123/DIG.13

Gas

5
123/24R

Gunpowder

9
123/24A

Single shot gun powder motors

3
123/594

High tension ignition system

36
123/620

Additional spark energy supply

166
123/644

Current or voltage sensing in coil primary

232
123/640

Dual systems

77
123/641

One for starting

9
123/643

Electronic cylinder sequencing

201
123/628

Having a continuous high voltage output to the high voltage distributor

8
123/634

Having a specific ignition coil

289
123/647

Having a specific mounting of system component

150
123/621

Having an ignition coil with multiple primary or secondary windings

35
123/622

Separate circuit for each winding

30
123/627

Having auxiliary spark gap in series or parallel with the coil

31
123/624

Having ballast resistor cutout or control

8
123/609

Having dwell control

196
123/611

Dwell maintained at constant value

24
123/610

Using a monostable multivibrator

19
123/612

Having engine component position sensor

71
123/614

Including a zero crossing detector

10
123/615

Includng an oscillator

12
123/617

Inductive or magnetic sensor

213
123/613

Optical sensing

67
123/616

Piezoelectric sensor

6
123/648

Having scr triggered by lowering cathode voltage below ground

12
123/618

Having specific trigger circuitry

109
123/619

Oscillatory trigger circuit

14
123/623

Having supply voltage regulation

28
123/606

High frequency ignition system

122
123/607

Free running oscillator supplies coil primary

24
123/608

Having a specific spark plug

20
123/645

Maverick spark suppressor

31
123/646

Point bounce or arc suppression system

4
123/629

Monostable multivibrator controls timing of coil primary current

6
123/649

Multiple primary current interrupters

13
123/636

Multiple spark ignition system

37
123/638

System fires multiple spark plugs per cylinder

62
123/637

System fires single spark plug per cylinder

100
123/639

System using vibrator for multiple sparks upon starting

3
123/642

Piezoelectric voltage generator

11
123/650

Power supply, ignition coil primary, and interrupter element all in series

40
123/654

Additional capacitor other than breaker point capacitor is in parallel with coil primary or secondary

33
123/653

Additional capacitor other than breaker point capacitor is in series with coil primary or secondary

25
123/656

Diode is in parallel with coil primary or secondary

42
123/655

Diode is in series with coil primary or secondary

62
123/651

Interrupter is multiple transistor circuit

115
123/652

Interrupter is single transistor

55
123/633

Radio interference protection

83
123/625

Responsive to engine or environmental condition

50
123/626

Oscillator or trigger circuit responsive to engine condition

12
123/595

Retrofit conversion ignition unit

31
123/630

Safety device

178
123/632

Ignition switch opened when engine stops

22
123/631

Reverse engine rotation protection

42
123/635

Specific coil location

174
123/596

Using capacitive storage and discharge for spark energy

57
123/599

Having a magneto

133
123/603

Antireverse protection

26
123/601

Specific design of charge or trigger winding core

37
123/600

Triggering voltage obtained from capacitor charging winding

22
123/605

Having a specific capacitor, ignition coil means, or switching element circuit path

133
123/598

Having an oscillator

80
123/604

Inductive capacitive discharge system

49
123/597

Regulating sensed ignition capacitor voltage

22
123/DIG.12

Hydrogen

250
123/143R

Igniters

59
123/144

Flame

4
123/143A

High compression igniters

17
123/145R

Incandescent

45
123/145A

Electric (incandescent ignitors using electricity as a source of heat)

375
123/146

Valve controlled

0
123/143C

Insulated casing enclosing wires leading to plugs, distributor, etc.

93
123/146.5R

Sparkers

21
123/150

Combined adjusting and exhaust regulating

1
123/151

Combined sparker and valve

13
123/152

Combined valve and sparker operating

8
123/146.5D

Devices for opening the ignition circuit when engine stops in order to save battery

13
123/149R

Dynamos

41
123/149D

Flywheel type

95
123/149B

Impulse starters

0
123/149A

Inductor type

23
123/149G

Movable pole shoes and bell-magnets

1
123/149E

Oscillating armature type

2
123/149H

Reciprocating

1
123/149F

Special waveforms

3
123/149FA

Double current generators

0
123/146.5C

Fluid level or pressure-actuated ignition switches

2
123/146.5B

Ignition locks

30
123/147

Low tension

0
123/153

Make and break

4
123/164

Adjusting mechanism

1
123/154

Electromagnetic

3
123/160

Oscillating electrodes

0
123/162

Piston-operated

16
123/155

Pneumatic

2
123/156

Reciprocating electrode

2
123/158

Rocking and rigid electrodes

1
123/159

Rocking and yielding electrodes

2
123/157

Rocking-electrode hammer action

0
123/161

Rotary electrodes

2
123/163

Stationary-electrode structure

3
123/169R

Plugs

117
123/169EC

Adjustable and replaceable

6
123/169EA

Adjustable gap

13
123/169CL

Cleaners automatic

13
123/169CM

Cleaners manual

0
123/169CA

Compound insulation

3
123/169C

Cool

9
123/169CB

Core retaining

2
123/169DW

Disk wrappings type

0
123/169EL

Electrodes

191
123/169E

Insulated electrodes

26
123/169P

Insulating protecting

13
123/169PB

Heaters

6
123/169PH

Hoods and shields

41
123/169PA

Tubes and attachments

119
123/169G

Intensity in gap only

3
123/169MG

Multiple firing gap

42
123/169EB

Replaceable electrode

4
123/169TC

Transparent combustion chamber

0
123/169V

Valved

24
123/146.5A

Timers

259
123/143B

Special charge igniters

211
123/184.21

Intake manifold

370
123/184.28

For engine having radiating cylinders

6
123/184.31

For v-type engine

103
123/184.32

For use with carburetor upstream of manifold

44
123/184.33

Inlet manifold heated by outlet manifold

12
123/184.34

Manifold having plenum

105
123/184.35

Plural plenums

38
123/184.36

Interconnected between plenums

61
123/184.37

Multiple passage leading to inlet of one cylinder

28
123/184.29

Star-type engine

1
123/184.38

For in-line engine

72
123/184.39

For use with carburetor upstream of manifold

32
123/184.41

Intake manifold heated by outlet manifold

19
123/184.42

Manifold having plenum

175
123/184.43

Plural plenums

24
123/184.44

Interconnection between plenums

17
123/184.45

Multiple passage leading to inlet of one cylinder

69
123/184.46

For use with carburetor upstream of manifold

39
123/184.47

Manifold having plenum

109
123/184.51

Adjustable plenum

19
123/184.48

Plural plenums

17
123/184.49

Interconnection between plenums

31
123/184.61

Manifold material or composition

225
123/184.53

Manifold tuning, balancing or pressure regulating means

287
123/184.56

Adjustable cross section passage

118
123/184.55

Adjustable length passage

211
123/184.59

Interconnection between passages

50
123/184.57

Resonator chamber

210
123/184.58

Return loop to inlet

12
123/184.54

With back flow prevention valve

83
123/184.52

Multiple passage leading to inlet of one cylinder

39
123/184.22

Passage to crankcase

17
123/184.23

For use with carburetor upstream of manifold

22
123/184.24

Manifold having plenum

51
123/184.25

Plural plenums

11
123/184.26

Interconnection between plenums

9
123/184.27

Multiple passage leading to inlet of head

7
123/DIG.1

Interchangeable

18
123/22

Internal combustion and air

5
123/19

Liquid piston

17
123/196R

Lubricators

1118
123/196CP

Crankcase, pressure control

120
123/196A

Filtering

293
123/196AB

Heating and cooling

304
123/196S

Safety devices

318
123/196V

Sleeve valve lubrication

10
123/196M

Upper cylinder lubricants

146
123/196W

Vertical shaft

182
123/306

Means to whirl fluid before, upon, or after entry into combustion chamber

361
123/308

Having multiple oxidant inlet means

501
123/309

Specific spark plug location

41
123/307

Structural projection on working piston causes whirling

60
123/1R

Miscellaneous

68
123/1A

Fuels, lubricants and additives

832
123/DIG.3

Model

30
123/52.1

Multiple cylinder

27
123/53.1

Cylinder offset from crankshaft axis

50
123/53.5

Crankshaft between parallel cylinders

27
123/53.3

Cylinders opposite

15
123/53.4

Two-stroke cycle

11
123/53.2

Multiple crankshafts

18
123/53.6

Cylinders having opposing heads

34
123/58.1

Cylinders in-line

25
123/58.7

Cylinder supercharged by pressure pulse of released exhaust gases

12
123/58.8

Exhaust to next cylinder ready to fire

70
123/58.4

Lengthwise charging

11
123/58.5

Step piston

7
123/58.2

Locked pistons

11
123/58.3

Two-stroke cycle

7
123/59.6

Multiple crankshafts

35
123/58.9

Oscillating or reciprocating, nonpoppet valve

8
123/59.5

Plural carburetors

22
123/59.1

Rotary valve

9
123/59.4

Disc valve

3
123/59.3

Sleeve valve

9
123/59.2

Tapered

1
123/58.6

Step piston

15
123/59.7

Two-stroke cycle

19
123/54.1

Cylinders radiating

33
123/54.4

"v" type

141
123/54.5

Odd number of cylinders

8
123/54.6

Six cylinder

33
123/54.7

Eight cylinder

19
123/54.8

More than eight cylinder

10
123/55.2

Cylinders opposite

46
123/55.3

Cam on rotary output shaft

35
123/55.4

Four-stroke cycle

20
123/55.5

Cylinders opposite and aligned

44
123/55.6

Two-stroke cycle

7
123/55.7

Cylinders opposite and aligned

59
123/55.1

Semi-radial

8
123/54.2

Star

33
123/54.3

Cam on rotary output shaft

41
123/56.1

Having rotary output shaft parallel to cylinders

50
123/56.2

Cam on rotary output shaft

32
123/56.8

Motion converting means between two banks of cylinders

21
123/56.9

Multiple cam drives

17
123/56.7

Single bank of cylinders

18
123/56.3

Swash plate type

26
123/56.5

Motion converting means between two banks of cylinders

13
123/56.6

Multiple swash plate drive

18
123/56.4

Single bank of cylinders

32
123/57.1

Shaft rotates through piston

8
123/60.1

Locked annular piston

17
123/52.2

Simultaneous compression, distinct pistons, restricted communication to a single combustion chamber

11
123/52.3

Four-stroke cycle

19
123/52.4

Multiple crankshafts

24
123/52.5

Two-stroke cycle

10
123/52.6

Multiple crankshafts

8
123/DIG.8

Multiple engine units

51
123/37

Multiple explosion

14
123/51R

Multiple piston, common nonrestrictive combustion chamber

58
123/51A

Four-cycle

25
123/51AA

Four-cycle separate crankshaft for piston

26
123/51AC

Two or more combustion chambers between the piston

2
123/51B

Two-cycle

60
123/51BD

Inlet or exhaust ports in two or more planes

26
123/51BB

Piston offset from crankshaft

14
123/51BC

Plural combustion chamber and plural piston

10
123/51BA

Two-cycle separate crankshaft for piston

52
123/39

Noncompression

13
 

Oil engines

 
 

Pump supply to air inlet

 
123/42

Oscillating cylinder

28
123/18R

Oscillating piston

94
123/18A

Toroidal cylinder

31
123/193.1

Particular piston and enclosing cylinder construction

74
123/193.2

Cylinder detail

281
123/193.5

Cylinder head

583
123/193.3

Having detail of connection to other cylinder structure

248
123/193.6

Piston

820
123/193.4

Having detail to guiding structure cooperating with cylinder

134
123/90.1

Poppet valve operating mechanism

54
123/90.31

Camshaft drive means

1157
123/90.6

Cam

400
123/90.11

Electrical system

809
123/90.21

Follower displaced axially of camshaft

20
123/90.12

Hydraulic system

735
123/90.13

With manifold and distributor

136
123/90.33

Lubrication

207
123/90.34

Camshaft

182
123/90.38

Housings

257
123/90.36

Rocker fulcrum as conduit

106
123/90.37

Seals and shields

108
123/90.35

Tappet as conduit

62
123/90.27

Overhead camshaft

494
123/90.22

Plural valve trains, single actuator

135
123/90.23

Intake and exhaust

82
123/90.14

Pneumatic system

67
123/90.39

Rocker

813
123/90.44

Cam engaged

565
123/90.41

Individually fulcrumed

226
123/90.43

Lash adjustment at fulcrum

172
123/90.42

Rotation prevention

88
123/90.45

Lash adjustment

147
123/90.46

Hydraulic

183
123/90.4

Plural valves

120
123/90.47

Yieldable engagement

17
123/90.61

Rod

96
123/90.64

Pull type

5
123/90.62

Self-adjusting

6
123/90.63

Hydraulic

15
123/90.65

Spring

103
123/90.66

Attenuated

15
123/90.67

Seat and retainer

77
123/90.48

Tappet

368
123/90.51

Composition, surface treatment manufacture

159
123/90.49

Cushion and silencer

58
123/90.52

Lash adjustment

225
123/90.53

Self-operating

13
123/90.55

Hydraulic

390
123/90.56

Pressure flow upwardly into pressure chamber

26
123/90.58

Self-contained

42
123/90.57

Vent or bleed means for pressure chamber

62
123/90.59

With provision for horizontal positioning

29
123/90.54

Screw

19
123/90.5

Rotation prevention

178
123/90.24

Valve driven closed

104
123/90.26

By cam-actuated unitary follower

33
123/90.25

By valve-opening rocker

34
123/90.32

With alternate interruption of drive train

20
123/90.2

With compound movement of cam follower

70
123/90.15

With means for varying timing

2466
123/90.16

Cam-to-valve relationship

1891
123/90.17

Camshaft or cam characteristics

1969
123/90.18

Axially shiftable camshaft

174
123/90.28

With nonvalving movement (e.g., about valve stem)

36
123/90.29

Oscillating movement converted internally

5
123/90.3

Positive rotation provided by internal means

21
123/90.19

With temperature compensation

49
123/253

Precombustion and main combustion chambers in series

26
123/280

Atomizer, deflector, or shield in precombustion chamber

62
123/254

Chamber temperature control means

85
123/274

Having combustible mixture forming means

84
123/275

By fuel injection into precombustion or main combustion chamber

155
123/278

By fuel injection into main chamber with carbureted precombustion chamber

3
123/277

By fuel injection into precombustion chamber with carbureted main chamber

25
123/276

Fuel injected into precombustion chamber formed in piston

232
123/262

Having fluid whirling means

99
123/263

Whirling in precombustion chamber only

135
123/286

Having specific connecting passage means between precombustion and main combustion chambers

104
123/289

Fluid flow through passage controlled by working piston

27
123/291

Multiple connecting passages

18
123/290

With whirling

17
123/288

Having fuel, a combustible mixture, or air added in the connecting passage

10
123/293

Having multiple passages

114
123/287

With ignition means in connecting passage

43
123/292

With valve means or variable orifice means in the passage

75
123/258

Having timed valves to precombustion and main combustion chambers

27
123/259

Having volumetric relation between precombustion and main combustion chambers

64
123/279

Piston carried precombustion chamber

147
123/269

Piston shape complements precombustion chamber discharge

51
123/256

Plural precombustion chambers

73
123/265

Precombustion and main chambers form an "i" head

10
123/266

Precombustion chamber assembly inserted in spark plug hole

63
123/267

Separate fuel or combustible mixture added to precombustion chamber

43
123/285

Precombustion chamber having a specific shape

57
123/264

Precombustion chamber is carried by a valve

6
123/270

Precombustion chamber liner or coating

71
123/272

Including combustion catalyst liner or coating means

24
123/271

With liner mounting means

41
123/273

Precombustion chamber mounting means

37
123/281

Precombustion chamber shape is a figure of revolution

28
123/283

Cylindrical

16
123/282

Figure of revolution is multishaped to form a precombustion chamber

18
123/284

Spherical

17
123/257

Two-cycle

63
123/268

Valveless precombustion chamber

75
123/255

Vaporizing in precombustion chamber

42
123/260

With ignition means particularly positioned relative to precombustion and main combustion chambers

182
123/261

With injection means particularly positioned relative to precombustion and main combustion chambers

96
123/50R

Reciprocating cylinder

25
123/50A

Four-cycle

7
123/50B

Two-cycle

12
123/41R

Reversible

15
123/41E

Electrical

24
123/45R

Rotary reciprocating piston

37
123/45A

Piston and crankshaft coaxial

25
123/200

Rotary

38
123/247

Only combustion and expansion of charge in engine

13
123/248

Abutment

20
123/249

Interengaging rotors

23
123/201

Reversible

4
123/216

With charge treatment means

40
123/217

Exhaust gas recirculation

8
123/220

Preheating

13
123/218

Rotor shape

22
123/219

Stratification

38
123/203

With combusted gas treatment or handling means

28
123/204

With compression volume means in uninterrupted communication with expansion volume means

67
123/241

With compression, combustion, and expansion in a single variable volume

166
123/244

Abutment

30
123/245

Alternately approaching and receding elements

118
123/246

Eccentric interengaging rotors

60
123/242

Planetating rotor

81
123/243

Vane

91
123/205

With fuel injection means

50
123/206

And pump or control means

30
123/208

Into intake chamber

6
123/207

Into intake port

10
123/209

Into prechamber

19
123/210

With ignition means

34
123/211

Plural

27
123/202

With means to control degree of compression

23
123/212

With plural compression volume means

21
123/213

In series

22
123/214

With plural expansion volume means

13
123/215

In series

15
123/221

With transfer means intermediate single compression volume means and single expansion volume means

25
123/234

Compression volume means axially disposed relative to expansion volume means

23
123/237

Abutment

36
123/238

Interengaging rotors

42
123/235

Transfer means in rotor

37
123/236

Vane

58
123/228

Compression volume means circumferentially disposed relative to expansion volume means

53
123/230

Compression volume is also expansion volume

11
123/232

Interengaging rotors

37
123/233

Nonparallel axes

15
123/229

Transfer means in rotor

39
123/231

Vane

31
123/239

Compression volume means radially disposed relative to expansion volume means

15
123/240

Concentric

17
123/222

Isolated charge in movable transfer element

22
123/223

Reciprocating or oscillating compression volume means

18
123/224

Radially spaced from expansion volume means

4
123/225

Abutment acts as compression means

4
123/226

Compression means disposed in rotor

13
123/227

Vane acts as compression means

14
123/43R

Rotating cylinder

68
123/43C

Cam transmission

24
123/43A

Parallel to shaft

37
123/43AA

Parallel to shaft cam track

30
123/44R

Radial

41
123/44E

Cam transmission

39
123/44B

Combustion chamber is center of star

32
123/44C

Two-cycle

46
123/44D

Valve casing-cylinders have no valves but have ports which register with ports in casing

61
123/44A

Wheel

2
123/43B

Toroidal cylinders

21
123/64

Six-cycle

53
123/23

Solid fuel

78
123/406.11

Spark ignition timing control

58
123/406.75

Centrifugal timing mechanism

23
123/406.12

Electronic control

62
123/406.5

Acceleration or deceleration responsive

42
123/406.51

Acceleration responsive

70
123/406.49

Barometric pressure responsive

23
123/406.19

Closed loop feedback control of spark timing

43
123/406.26

Combustion condition responsive

96
123/406.28

Combustion condition sensed by optical sensor

32
123/406.27

Combustion failure responsive (e.g., misfire)

64
123/406.41

Engine cylinder pressure responsive

72
123/406.42

Peak pressure responsive

67
123/406.43

Responsive to derivative, integral or average of pressure

29
123/406.29

Engine knock responsive

148
123/406.3

Fuel quality or composition signal responsive

57
123/406.31

Alcohol concentration responsive

15
123/406.32

Having a plurality of speed/load maps related to fuel quality or composition

25
123/406.37

Having specific knock detecting means

113
123/406.4

And specific system component mounting or location details

14
123/406.38

Knock frequency distribution pattern responsive

67
123/406.39

Knock signal counting

35
123/406.34

Modification of knock signal by engine operating condition signal

46
123/406.35

Engine operating condition is load or speed

77
123/406.36

Acceleration or deceleration responsive

39
123/406.33

With modifying or updating memory (i.e., learning)

74
123/406.23

Engine output (e.g., torque, speed, horsepower) or fuel consumption optimization

203
123/406.44

Exhaust gas condition responsive control of spark timing

70
123/406.24

Including means responsive to the instantaneous change in engine speed (e.g., roughness, unstable combustion, etc.)

128
123/406.25

Acceleration or deceleration responsive

35
123/406.2

Separate control for each cylinder

38
123/406.22

Cylinder pressure responsive

44
123/406.21

Knock responsive

97
123/406.58

Having engine shaft rotational position signal generator (e.g., crank shaft, cam shaft)

106
123/406.59

Speed responsive timing control

107
123/406.6

Having counter or addressable memory (e.g., digital timing circuit)

91
123/406.64

Memory addressed by engine speed or load

40
123/406.65

With microprocessor

126
123/406.61

Plural engine shaft position sensors

29
123/406.62

Position sensors at separate shafts

47
123/406.63

Position sensors having different pulse rates

53
123/406.66

With resistor/capacitor (rc) timing circuit (e.g., multivibrator)

87
123/406.45

Including control of combustible mixture or a constituent thereof (e.g., air, fuel, exhaust gas)

113
123/406.46

Acceleration or deceleration responsive

47
123/406.48

With exhaust gas recirculation (egr) control

59
123/406.47

With fuel injection control

261
123/406.53

Starting condition responsive

136
123/406.54

Start detected by engine speed

37
123/406.55

Temperature responsive (e.g., ambient, engine, etc.)

142
123/406.52

Throttle position responsive

106
123/406.13

With fail-safe, backup or malfunction detecting means

88
123/406.17

Cylinder pressure sensor malfunction responsive

9
123/406.18

Engine shaft rotational position sensor malfunction responsive (e.g., crank shaft, cam shaft)

62
123/406.15

Fuel sensor malfunction responsive

7
123/406.14

Including spark failure responsive means (e.g., misfire)

61
123/406.16

Knock control malfunction responsive

59
123/406.56

With magneto

43
123/406.57

And capacitor discharge for ignition spark energy

140
123/406.74

Mechanical or hydraulic link to throttle valve or accelerator

30
123/406.76

Spark delay actuated or deactuated by starting device

5
123/406.67

Vacuum timing control

17
123/406.68

Barometric pressure responsive

8
123/406.69

Condition responsive valve in fluid path from vacuum source

57
123/406.7

Temperature responsive

40
123/406.71

Fluid delay between vacuum source and actuator (e.g., fixed restriction)

9
123/406.72

Increasing vacuum retards spark timing

2
123/406.73

Plural diaphragms or actuators

17
123/179.1

Starting device

138
 

Starting device

 
123/179.7

Auxiliary fuel supply device

27
123/179.14

Condition responsive

47
123/179.15

Temperature

96
123/179.9

Priming means

48
123/179.12

Condition responsive

13
123/179.13

Temperature

17
123/179.11

Manual pump device or squeeze bulb

83
123/179.8

Starting fluid

59
123/182.1

Compression relieving type

187
123/179.3

Condition responsive control of starting device

444
123/179.4

Including automatic engine stop

319
123/179.6

Control of glow plug during starting

109
123/179.5

Control of spark ignition during starting

161
123/179.24

Either power or manual starting device

48
123/179.27

For airplane

17
123/185.7

Manual type

7
123/183.1

Gunpowder type

0
123/179.31

Having fluid-driven starting motor

70
123/179.25

Having specific mounting or drive connection for electric starter motor

174
123/179.26

For nonoperator supporting wheeled platform

19
123/179.19

Includes auxiliary internal combustion engine

23
123/179.22

Inertia type

25
123/185.1

Mechanical

22
123/185.2

Includes cable

45
123/185.3

Including recoil mechanism

173
123/185.4

Lever connected to the cable

16
123/185.9

Includes coaxial cooperating threaded members in linkage

7
123/185.8

Includes friction means in linkage

3
123/185.5

Includes lever or slide linkage

9
123/185.6

Lever or slide actuates a gear segment

9
123/185.14

Includes mechanical potential motor (e.g., spring motor)

70
123/185.15

Operated by wheels of vehicle

1
123/185.11

Includes worm gear in linkage

0
123/185.12

Including crank-type handle

4
123/185.13

Means provided to prevent counter rotation of crank

8
123/179.2

Remote control

117
123/184.1

With auxiliary igniters

2
123/179.21

With charge or cylinder heating

212
123/179.28

With electric generating means

77
123/179.29

Auxiliary magneto

8
123/179.16

With fuel or intake air control

334
123/179.17

Fuel injection pump

287
123/179.18

Intake air control

228
123/DIG.4

Stratification

27
123/197.1

Transmission mechanism from piston

199
123/197.4

Crankshaft and connecting rod

346
123/197.3

Particular connecting rod

181
123/197.5

Including clutch

28
123/197.2

With particular piston

43
123/65R

Two-cycle

95
123/65BA

Blowers

83
123/66

Combined pump and motor cylinder

17
123/67

Divided pump discharge

4
123/65EM

Exhaust manifolds

29
123/65PE

Exhaust ports

187
123/65A

Inlet and exhaust ports in two or more planes

74
123/65VD

Intake and exhaust valve in top of cylinder

46
123/65VC

Lengthwise scavenging exhaust above

42
123/65VB

Lengthwise scavenging list above

37
123/65PD

Port deflectors

25
123/65P

Ports

113
123/70R

Pump and cylinder adjacent

135
123/70V

Lengthwise scavenging of power cylinder

11
123/71R

Pump and cylinder coaxial

48
123/71V

Lengthwise scavenging of cylinder from head to piston

4
123/71VA

Sleeve valve

2
123/72

Pump and cylinder inclined

9
123/68

Pump compression

68
123/65B

Pumps

21
 

Rear compression

 
123/73R

Crankcase

139
123/73AE

Auxiliary piston moves synchronously with piston to enlarge volume of crankcase or incoming charge

5
123/73AF

Crankcase compression with auxiliary pump means

19
123/73D

Disc valves

13
123/73DA

Charge to crankcase through crankshaft

4
123/73PP

Distinct passages from crankcase to cylinder

265
123/73B

Fuel to bypass

60
123/73BA

Lengthwise scavenging of cylinders from head

8
123/73A

Fuel to crankcase

285
123/73C

Fuel to cylinder

186
123/73CA

Lengthwise scavenging of cylinders from head

3
123/73CC

With gas or vapor pump to separate

13
123/73CB

With liquid pump to separate inlet

11
123/73AB

Inlet valve in head

5
123/73AD

Lubricant oil and fuel mixing devices

182
123/73AA

Ported piston

46
123/73AV

Valved

9
123/73E

Reentrant cylinder head

0
123/73SC

Returns charge to crankcase or rejects to exhaust

7
123/73SP

Slow-speed operation

10
123/73F

Stepped piston

8
123/73FA

Ported

10
123/73S

Supercharging of crankcase

11
123/73V

Valves for crankcase

96
123/73AC

Varies compression space

4
123/74R

Cylinder

22
123/74AC

Cross head between piston and crank

6
123/74AE

Enclosed crankcase

13
123/74A

Fuel to rear of piston

7
123/74AA

Lengthwise scavenging from head

1
123/74B

Lengthwise bypass

3
123/74C

Lengthwise cylinder combustion space

0
123/74AP

Reduced portion of piston acts as guide

3
123/74D

Slide valve between chamber of pump and crankcase

3
123/65E

Scavenging by inertia of exhaust gas and charging by use of pressure waves

20
123/69R

Separate air and gas pumps

18
123/69V

Lengthwise scavenging of cylinder by gas from cylinder head to piston

8
123/65SP

Single port for inlet and exhaust

5
123/65S

Step piston (see sub. 59 bs)

19
123/65WV

Vacuum intake

4
123/65V

Valves

94
123/65VS

Sleeve driven by auxiliary crankshafts

2
123/65VA

Sleeve valve

19
123/65W

Whirl through piston-controlled ports

23
123/65WA

Whirl in top of cylinders and lengthwise scavenging

4
123/47R

Valved piston

23
123/47A

Charge passes from crankcase through valve in piston

18
123/47AB

Inlet and exhaust valve in piston

4
123/47AA

Lost motion connection actuates valve

2
123/188.1

Valve

40
123/188.7

Combustion improving accessory

41
123/189

Detachable

8
123/188.9

Guide, lubricant, or coolant

103
123/188.17

Having actuation springs concentric with valve stem

28
123/188.6

Packing

85
123/188.4

Reciprocating valve

59
123/188.2

Poppet

56
123/188.3

Material or structure

190
123/188.16

Pivoted

5
123/188.15

Shepherd type

0
123/188.5

Sleeve

30
123/190.1

Rotary

67
123/190.14

Disc, cone, or sphere shaped

63
123/190.15

Controls plural cylinders

13
123/190.4

Double function type

42
123/190.6

Elongated rotary double-function valve

31
123/190.7

Tapered

3
123/190.5

For two or more cylinders

24
123/190.8

In horizontal plane above cylinder

73
123/190.9

Tapered

3
123/190.11

In horizontal plane on the side of the cylinder

7
123/190.3

For crankcase

4
123/190.16

Lubricant

17
123/190.17

Seal

83
123/190.2

Single function, (i.e., exhaust and intake by separate tube)

96
123/190.12

Sleeve

25
123/190.13

With lubrication means

5
123/188.14

Valve head cooperates with manifold

248
123/188.8

Valve seat relation

133
123/188.11

Wear feature

34
123/188.12

For spring

11
123/188.13

Including attaching means

29
123/192.1

Vibration compensating device

231
123/192.2

Balancing arrangement

390
123/25R

Water and hydrocarbon

117
123/25N

Automatic water control interconnected with throttle

20
123/25M

Automatic water control; speed

24
123/25L

Automatic water control; suction

70
123/25K

Automatic water control; thermostatic

25
123/25J

Automatic water control

74
123/25Q

Cooling regulation

9
123/25P

Steam injection

72
123/25H

Washers and cleaners with heat

5
123/25G

Washers and cleaners

10
123/25A

Water in charge

127
123/25C

Water into cylinder

136
123/25E

Water introduced by mixing with other materials

107
123/25F

Water plus heat by mixing with other materials

22
123/25B

Water plus heat into charge

93
123/25D

Water plus heat into charge

34
123/142.5R

With heating means

237
123/142.5E

Electric heaters for heating cooling system

116
 
 
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