Internal-combustion engines > Patents - Class: 123

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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	209
123/198B	Antitheft valves and locks	54
123/198DA	Bearing wear, cylinder, oil drain, auto ignition	14
123/198E	Covers, trays, vibrators, corrosion inhibitors, air filters	848
123/198F	Cylinder cut out	783
123/198A	Decarbonizers and antiknocks	167
123/198DB	Fuel cut-off	471
123/198DC	Ignition cut-off control	210
123/198P	Pressurizing - crankcase, clutch housing, transmission housing	10
123/198C	Pumps	187
123/198D	Safety devices	872
123/DIG.2	Accumulated fuel return to tank or engine-induction system	12
123/26	Additional air supply	78
123/48R	Adjustable combustion chamber	71
123/48D	Auxiliary chamber	28
123/48C	Cylinder or sleeve-moved	23
123/48A	Piston in head adjusted manually or mechanically	38
123/48AA	Piston in head adjusted	26
123/48B	Piston varied by means in crankshaft, connecting rod or piston	200
123/DIG.11	Antidieseling (stopping)	71
123/38	Atmospheric	0
123/27R	Burning by highly compressed air	58
123/27GE	Gas engines (diesel type) convertible from liquid to gas or operable with liquid and gas	163
123/27A	Oil engine air preheated	1
123/434	Charge forming device (e.g., pollution control)	85
123/704	Air/fuel ratio prior to combustion responsive means	62
123/443	Alternate or simultaneous lean-rich	115
123/531	Auxiliary air or gas used to inject fuel	244
123/534	Air is bled from another engine cylinder	16
123/532	Air is bled from the cylinder on the compression stroke in that cylinder	32
123/535	Constant fuel level	2
123/533	Having a separate pump for the air or gas	157
123/585	Auxiliary air or oxygen added to combustible mixture	483
123/588	Oxidant controlled by engine temperature	95
123/587	Oxidant controlled by intake manifold vacuum	151
123/586	Oxidant controlled by throttle	65
123/437	Auxiliary control of carburetor fuel metering	69
123/438	By electrical or electronic control system	214
123/439	Variable venturi carburetor	42
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)	273
123/592	By fan means	58
123/593	By screen means	71
123/591	Having liquid fuel collector	20
123/525	Combined liquid and gaseous fuel	260
123/526	Diesel engine convertible from liquid to gas	56
123/536	Combustible mixture ionization, ozonation, or electrolysis	183
123/539	Air only	52
123/537	Before intake valve (e.g., in manifold)	56
123/538	Fuel only	241
123/530	Constant flow fuel supply	11
123/540	Cooling of combustible mixture	33
123/542	Air only	43
123/541	Fuel only	119
123/572	Crankcase vapor used with combustible mixture	459
123/574	Specific control valve (e.g., pcv valve)	100
123/573	Vapor treated before mixing with combustible mixture (e.g., cooling)	166
123/575	Diverse fuel supply	316
123/576	Fuel switched in response to engine starting condition	67
123/578	Fuel switched in response to engine temperature	30
123/577	Fuel switched, condition responsive to load	68
123/568.11	Exhaust gas used with the combustible mixture (e.g., emission control exhaust gas recirculation (egr) valve)	258
123/568.19	Egr valve position controlled only in relationship to intake throttle valve position	55
123/568.12	Exhaust gas cooled during recirculation	320
123/568.21	Having electrically actuated control means	364
123/568.22	Ambient condition responsive (e.g., atmospheric temperature, atmospheric pressure)	61
123/568.26	Having electromechanical actuator control of egr valve	92
123/568.27	Controlling vacuum actuator	189
123/568.28	Including auxiliary vacuum pump	38
123/568.23	Having rotary actuator control of egr valve	56
123/568.24	Electrical rotary actuator rotates the egr valve	72
123/568.25	Vacuum actuator control of egr valve	6
123/568.15	Having exhaust gas mixed with a constituent before entry into intake manifold	86
123/568.13	Having recirculation path formed entirely in the cylinder block or head	46
123/568.17	Having specific exhaust gas outlet structure at intake manifold	157
123/568.18	Having a valve located at the outlet of the egr passage	96
123/568.14	Internal exhaust gas recirculation (e.g., exhaust gas retained in the combustion chamber)	200
123/568.2	Plural egr valves in the recirculation passage	129
123/568.29	Vacuum actuator control of egr valve	124
123/568.32	Having fixed restriction in vacuum line	28
123/568.3	Including auxiliary vacuum pump	13
123/568.31	Temperature responsive	28
123/568.16	With electrical means for fail-safe, backup, or malfunction detecting of egr system	141
123/510	Fuel flow regulation between the pump and the charge-forming device	291
123/516	Air or fuel vapor purging system	625
123/517	Carburetor float bowl drain	8
123/514	Excess fuel returned to tank	597
123/515	Regulator controls flow of a plurality of fuels	20
123/511	Regulator means adjusts fuel pressure	88
123/512	Engine parameter responsive	32
123/513	Environmental condition responsive	4
123/445	Fuel injection system	174
123/467	Drip prevention means at injector nozzle	603
123/472	Electrically actuated injector	255
123/475	Actuated by ignition pulse	24
123/478	Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)	946
123/492	Acceleration or full load condition responsive	505
123/479	Backup systems, fail-safe, failure indicator	412
123/482	Circuit activates valve for continuous fuel flow	25
123/493	Deceleration condition responsive	318
123/481	Engine cylinder cutout	365
123/486	Having a digital memory addressed by an engine parameter	283
123/487	Having an up or up-down counter in circuit	99
123/480	Having microprocessor	647
123/483	Having plural multivibrators	30
123/485	Having ramp generator	25
123/484	Having single multivibrator	15
123/494	Having specific transducer	659
123/490	Injector solenoid drive	358
123/491	Starting condition responsive	521
123/488	Subcircuit operates on a parameter sensor output before input to main fuel control (e.g., function generator)	217
123/476	Magnetically actuated switching	60
123/473	Mechanically actuated switching	4
123/474	Ignition distributor used as switch	7
123/477	Radiation actuated switching	13
123/446	Fuel pump flow regulation	706
123/452	Nonsequential distributor	98
123/456	Common rail system	771
123/455	Distributor and metering unit are in common housing	43
123/453	Enrichment of the combustible mixture for cold starting or cold running	49
123/454	Equal pressure valve type	84
123/457	Regulating means adjusts fuel pressure	179
123/465	Barometric responsive	14
123/459	Bleed off valve	137
123/462	By throttle control	39
123/458	Electric regulator	455
123/466	Having an antitampering device	10
123/461	Having vapor returned to tank or pump inlet	14
123/463	Manifold pressure responsive	146
123/460	Series regulator	34
123/464	Temperature responsive	36
123/448	Sequential distributor	13
123/451	Reciprocating distributor	22
123/449	Rotary and reciprocating distributor	181
123/450	Rotary distributor	282
123/447	With accumulator	455
123/468	Having a specific shape, material, or location of fuel line	338
123/469	Specific fuel line mounting means	142
123/470	Injection nozzle mounting means	552
123/471	Nozzle isolated from manifold vacuum effect	7
123/527	Gaseous fuel and air mixer	424
123/529	Safety device (e.g., cutoff)	38
123/528	Supercharged engine	20
123/444	Having fluidic logic control means	12
123/518	Having fuel vapor recovery and storage system	277
123/519	Having an adsorbent canister	522
123/520	Purge valve controlled by engine parameter	984
123/521	Responsive to secondary air pressure	16
123/543	Heating of combustible mixture	87
123/555	Air and fuel heated separately	21
123/556	Air only	191
123/552	Automatic control	164
123/547	Combustible mixture and heating meduim adjoin one another	115
123/546	Combustible mixture surrounds heating medium	62
123/554	Combustible mixture, air, and fuel are heated separately	10
123/550	Combustion heater	43
123/551	Part of combustible mixture is burned	29
123/549	Electric heater	423
123/557	Fuel only	617
123/558	Fuel is heated to ignition temperature	36
123/545	Heating meduim surrounds combustible mixture	114
123/553	Intermediate fluid used for heating	32
123/544	Lighter fuel is used during starting	8
123/548	Trap for liquid particle vaporization	61
123/435	Including cylinder pressure or temperature responsive means	501
123/672	Including exhaust gas condition responsive means	174
123/677	Combined with ambient condition responsive means (e.g., pressure)	54
123/678	Ambient temperature responsive	30
123/679	Combined with engine condition responsive means	123
123/689	Engine fluid or engine component temperature responsive	94
123/681	Engine load responsive	172
123/682	Acceleration or deceleration responsive	160
123/684	Pressure downstream of throttle valve responsive	101
123/683	Throttle position responsive	98
123/680	Idling responsive	81
123/688	Inoperative sensor responsive	263
123/687	Speed responsive	145
123/685	Starting or warmup responsive	77
123/686	Engine coolant temperature responsive	79
123/703	Exhaust gas composition sensor	116
123/676	Exhaust gas temperature or pressure repsonsive	235
123/691	Multiple sensors controlling group of cylinders	146
123/692	Controlling plural groups of cylinders	67
123/698	With addition of secondary fluid (e.g., fuel or exhaust gas)	250
123/699	Secondary fluid is auxiliary air or oxygen (e.g., carburetor air bleed)	79
123/700	Fed to air/fuel mixture	78
123/701	With auxiliary control of carburetor	48
123/702	Variable venturi carburetor	19
123/693	With compensator for sensor output (e.g., current or voltage)	51
123/697	Heater for sensor or sensor environment	134
123/694	Output fed to compensating circuit	130
123/696	Proportional or integral circuit	185
123/695	Variable reference value	59
123/690	With fail-safe, backup, or malfunction means	151
123/674	With modifying or updating memory (i.e., learning)	383
123/675	Acceleration or deceleration responsive	51
123/673	With sensor controlling each cylinder individually	145
123/436	Including means responsive to instantaneous change in engine speed	528
123/442	Injection or carburetion system having a series of throttle valves	99
123/523	Liquid fuel evaporating by extended fuel film	63
123/524	Screen or mat	20
123/522	Liquid fuel evaporating by submerged air supply	48
123/579	Multiple carburetors	44
123/580	Each carburetor feeds a cylinder or group of cylinders (e.g., split engine)	45
123/582	Separate carburetor for high load	6
123/581	Separate carburetor for starting	4
123/583	With linkage between carburetor throttle valves	28
123/584	Staged opening of carburetor throttle valves	13
123/567	Oxidant is solely oxygen	11
123/559.1	Supercharger	333
123/564	Boost control	195
123/566	Funnel-type supercharger (e.g., ram-air)	7
123/563	Intercooler	233
123/562	Multiple superchargers	65
123/559.2	Pressure exchange with exhaust gas	53
123/565	Supercharger is driven independently of the engine	61
123/560	Two-cycle compressor feeds a four-cycle engine	21
123/561	Variable ratio compressor driven supercharger	55
123/559.3	With clutch	60
123/495	With fuel pump	205
123/497	Electric fuel pump	295
123/498	Piezoelectric drive	120
123/499	Solenoid drive	65
123/505	Fuel pump and intake air controls interconnected	36
123/506	Having pressure relief valve	500
123/507	Pumping member driven by a piston or valve of the internal combustion engine	15
123/508	Pumping member driven by the internal combustion engine valve operating mechanism	114
123/509	Specific location or mounting of pump	584
123/500	Variable beginning and ending of pumping stroke	185
123/501	Variable beginning of pumping stroke	327
123/502	Fluid pressure control	305
123/503	Variable ending of pumping stroke	125
123/496	Variable rate of injection stroke	187
123/504	Variable stroke	48
123/2	Combined devices	128
123/3	Generating plants	474
123/310	Combustion chamber having multiple spark gaps	90
123/429	Combustion chamber means combined with air-fuel mixture forming means	13
123/432	Air or combustible mixture entering the combustion chamber through plural inlets	485
123/433	One inlet is uncovered by piston travel	27
123/431	Having a single combustible mixture inlet combined with means for injecting additional fuel into the combustion chamber	164
123/430	Stratification in combustion chamber	126
123/294	Combustion chamber means having fuel injection only	96
123/302	Air entering combustion chamber through plural inlets	128
123/303	Having inlet uncovered by working piston	4
123/297	Combination igniting means and injector	77
123/295	Combustible mixture stratification means	599
123/305	Having a particular relationship between injection and ignition characteristics (e.g., nozzle location, spray pattern, timing relative to igniter location, timing)	709
123/301	Injected fuel spraying into whirling fluid	135
123/304	Injecting diverse fuels or different states of same fuel	104
123/298	Injection of fuel onto igniter, deflector, heater, or atomizer	197
123/296	Injector is an integral part of engine valve	20
123/299	Using multiple injectors or injections	631
123/300	Alternating multiple injectors (e.g., series injection)	262
123/657	Combustion chamber	28
123/660	An acoustic cavity used to attenuate detonation shock waves (e.g., bodine)	12
123/663	Annular combustion chamber	9
123/667	Asymmetric combustion chamber	9
123/664	Combustion chamber shape is a figure of revolution	14
123/666	Hemispherical	10
123/665	Spherical	2
123/671	Cylinder head shape conforms to piston shape	15
123/670	Having catalytic cambustion aid	36
123/668	Having coating or liner	145
123/669	With means for mounting coating or liner	48
123/659	Having groove to aid combustion	8
123/661	Having squish area	123
123/658	L- or t-shaped	11
123/662	Multiple annular combustion chambers	4
123/21	Convertible cycle	52
123/DIG.7	Convertible	43
123/41.01	Cooling	121
123/41.56	Air-cooled	64
123/41.7	Engine encasing air duct; e.g., cowling	166
123/41.69	Finned cylinder and/or head	47
123/41.58	Flow-regulating means	31
123/41.59	Adjustable discharge	5
123/41.67	Jacketed cylinder	14
123/41.68	Spiral passages	3
123/41.6	Steam dividing vanes, baffles, conduits, or the like for multiple cylinders	9
123/41.62	Air duct with discharge ports or conduits	14
123/41.61	Individual deflecting cylinder baffles	10
123/41.63	With impelling means	15
123/41.65	Fan type	128
123/41.66	Suction	25
123/41.64	Jet type	13
123/41.57	With liquid cooling	38
123/41.02	Automatic coolant flow control	56
123/41.11	Air impeller	51
123/41.12	Temperature-responsive	274
123/41.03	Float control	2
123/41.04	Shutters, air valves, dampers or adjustable cowls	21
123/41.07	Interrelated shutter and throttle control	0
123/41.06	Servomotor-operated type	16
123/41.05	Temperature and engine operation responsive	65
123/41.08	Valves for fluid coolant	155
123/41.09	Coolant source bypass	46
123/41.1	Radiator or condenser source	281
123/41.55	Combined	21
123/41.18	Convertible	9
123/41.17	Coolant released into cylinder or valve passages	6
123/41.16	Coolant sealed in cylinder valve or piston	6
123/41.48	Devices for cooling liquid by air flow	24
123/41.49	Fan type	345
123/41.52	Engine or cylinder-mounted heat dissipators	10
123/41.53	Hopper type	1
123/41.15	Indicators and safety devices	181
123/41.34	Internal cooling of moving parts; e.g., hollow valves, pistons, and movable cylinder	24
123/41.35	Piston	143
123/41.37	Hollow piston rod	10
123/41.38	Wrist pin type; e.g., nonrigidly connected	21
123/41.39	Side wall opening	14
123/41.36	Telescoping piston and stationary conduits	9
123/41.41	Poppet-type valves	16
123/41.4	Rotary valves	18
123/41.13	Interrelated coolant flow and throttle control	24
123/41.42	Liquid coolants other than water and water treatment	65
123/41.3	Mixed air and liquid	6
123/41.43	Movably mounted tank or radiator	15
123/41.28	Multiple cylinders with equalized cooling	25
123/41.29	Parallel flow	123
123/41.71	Plural materials	10
123/41.51	Plural radiators and/or tanks in series	75
123/41.19	Refrigerating cycle	9
123/41.14	System drained and/or heat-storing	101
123/41.85	Valve seats or guides	28
123/41.31	With cooling of additional parts or materials	359
123/41.33	With lubricant heat exchange	157
123/41.32	With spark plug heat exchange	18
123/41.72	With jacketed head and/or cylinder	83
123/41.83	Cylinder detachable	15
123/41.84	Flanged cylinder or liner	106
123/41.81	Cylinder jacket supported solely by cylinder	18
123/41.73	Jet or spray within jacket	7
123/41.74	Multiple cylinder	153
123/41.75	Reentrant head	1
123/41.76	With cooled valve seats or guides	13
123/41.78	Cylinder side wall valves	3
123/41.77	Poppet-type valves	23
123/41.82R	With head-cooling arrangements	196
123/41.82A	Composite head	10
123/41.79	With passages, baffles, etc.	89
123/41.8	Spiral passages	6
123/41.44	With liquid coolant circulating means	232
123/41.46	Common drive for pump and fan	31
123/41.47	Engine shaft driven	54
123/41.45	Jet pumps	1
123/41.2	With vapor generation and/or condensing	18
123/41.21	Coolant circulation with condensing	69
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	4
123/41.27	Overflow vent to condenser	70
123/41.26	Vapor only circulated	4
123/41.25	Water bypasses condenser	6
123/41.54	With vent	145
123/41.5	Yielding or resilient walls	20
123/DIG.5	Crankcase pressure-operated pumps	31
123/41.86	Crankcase ventilation	111
123/DIG.6	Detachable	18
	Double-acting
123/63	Four-cycle	24
123/61R	Two-cycle	36
123/62	Combined pump and motor cylinder	11
123/61V	Lengthwise scavenging of cylinders from cylinder head to piston	2
123/250	Engine means having internal vaporizing in prechamber with all combustion in main chamber	12
123/252	Vaporizing by a hot surface of prechamber	6
123/251	Whirling in prechamber	4
123/319	Engine speed regulator	74
123/345	By changing valve lift	46
123/346	Intake valve lift altered	31
123/347	By changing valve timing	62
123/348	Intake valve timing altered	62
123/344	Charge proportion varying (e.g., the fuel-air ratio is varied)	38
123/402	Charge volume varying (e.g., total amount of mixture fed to engine is varied; relative amounts of air and fuel are fixed)	12
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)	132
123/332	Engine speed reduction by fuel cutoff	44
123/333	By electric means	149
123/330	Engine speed reduction by overriching the combustible mixture (e.g., choking engine)	8
123/331	By electric means	7
123/334	Engine speed reduction by partial or complete omission of the ignition	17
123/335	By electric means	154
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)	58
123/394	By combustion air or air-fuel mixture cutoff	6
123/350	Electrical sensing or regulating	268
123/362	Cold engine control	19
123/351	Engine overspeed sensing with an indicator or alarm and speed regulation	45
123/352	Engine speed sensing having an error signal producing circuit	428
123/360	Circuit controls a fluid throttle operator (e.g., vacuum)	99
123/361	Circuit controls an electric throttle operator	445
123/356	Circuit resonates (e.g., tuned) at governed speed	3
123/357	Electric fuel injection pump governor	438
123/359	Fail-safe feature (e.g., cuts off fuel pump)	76
123/358	Max-min governor (i.e., no control in between)	35
123/355	Having phase difference detector	4
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	51
123/390	Fuel injection pressure governor	9
123/379	Fuel injection pump governor	14
123/380	Barometric sensor	30
123/384	Floating piston-type governor (e.g., bessiere)	2
123/381	Fuel viscosity sensor (e.g., temperature sensing)	49
123/385	Liquid fluid governor	35
123/387	Fuel pressure sensor	91
123/386	Lubrication pressure sensor	17
123/388	Override for basic mechanical governor	7
123/382	Manifold pressure sensor	52
123/383	Supercharger	86
123/389	Intake manifold vacuum responsive	75
123/392	Responsive to cooling fan airflow	11
123/393	Responsive to exhaust gas	12
123/391	Responsive to intake airflow	19
123/363	Mechanical sensor or regulator	25
123/375	Fuel injection pressure governor	5
123/364	Fuel injection pump governor (e.g., diesel)	68
123/370	Acceleration responsive	24
123/372	Biased axial link (e.g., sliding rod with spring return)	51
123/371	Deceleration responsive	6
123/365	Governor override	69
123/366	Engine starting or warm-up control	53
123/367	Variable throttle or control rod stop	38
123/373	Pivoted link connected to pump rack	124
123/374	Movable fulcrum (e.g., slot and pin)	43
123/369	Three-dimensional cam control	17
123/376	Throttle positioning	116
123/377	Safety override of dangerous manual position	13
123/336	Having plural throttle valve structure	258
123/339.1	Idle speed control	86
123/339.12	And air-fuel ratio feedback controlled	57
123/339.29	By overriding injection pump governor	24
123/339.11	By regulating spark ignition timing	132
123/339.14	Electrically operated control means	86
123/339.19	By engine speed error feedback	115
123/339.21	And integral or derivative control	83
123/339.22	And temperature responsive	94
123/339.23	Controlling throttle bypass	149
123/339.2	Dynamic state variable model	26
123/339.16	External load condition responsive	76
123/339.18	Accessory load (e.g., lights, heater blower motor, radiator fan motor, generator) on engine electrical system responsive	55
123/339.17	Air conditioner operating mode responsive (i.e., compressor on-off)	94
123/339.27	Including linear reciprocating solenoid control device	57
123/339.28	Having valve controlled vacuum actuator	43
123/339.25	Including rotary actuator	50
123/339.26	Stepping motor type	33
123/339.24	Temperature responsive	94
123/339.15	With fail-safe, backup, or malfunction detecting means	72
123/339.13	Manual adjustment	51
123/395	Open loop condition responsive	22
123/401	Fluidic device between input and regulator	61
123/399	Having an electrical device between input and speed regulator	1130
123/400	Mechanical connection between input and speed regulator	195
123/396	Resistance or override acts on input connection to regulator	291
123/397	Shutdown safety device	54
123/398	Throttle position lock	38
123/343	Regulator accessory (e.g., cleaner, adjusting tool, etc.)	8
123/342	Regulator changes length of accelerator linkage	69
123/320	Responsive to deceleration mode (e.g., engine acting as a brake)	93
123/327	Auxiliary air fed to the engine	109
123/325	Deceleration responsive cutoff of fuel to engine (e.g., pollution control)	179
123/326	Rich resupply of fuel at end of deceleration	41
123/323	Exhaust throttling or blocking	179
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	25
123/321	Valve timing altering means (e.g., axially sliding cam shaft)	241
123/322	Electrical means adapted to alter valve timing	125
123/337	Specific throttle valve structure	413
123/DIG.9	Flame ignition	10
123/DIG.10	Fluidic amplifier fuel control	11
123/311	Four-cycle	32
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	5
123/313	Having a junk ring seal	0
123/314	Having sleeve valve lubrication means	5
123/316	Having subcharger associated with the cylinder	118
123/87	Longitudinal valve and lever	0
123/315	Multiple exhaust	104
123/86	Opposite supply and exhaust valves	0
123/81R	Oscillating valve	4
123/81D	Disc valve	3
123/81B	Oscillating valve - not sleeve or disc	14
123/81C	Sleeve valve	10
123/318	Rear compression of air or combustible mixture to be subsequently pumped into the working cylinder	21
123/82	Rotating side shaft	1
123/83	Rotating transverse shaft	2
123/80R	Rotating valve	20
123/80D	Disc valve	25
123/80DA	Rotary plug	4
123/80BB	Rotary valve is parallel to cylinder	25
123/80BA	Rotary valve is perpendicular to cylinder	62
123/80C	Sleeve valve	16
123/76	Scavenging	19
123/79R	Single poppet valve	32
123/79C	Concentric valves; relatively movable	35
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	1
123/78R	Variable clearance	48
123/78D	Auxiliary chamber	18
123/78C	Cylinder or sleeve moved	21
123/78A	Piston in head adjusted mechanically	32
123/78AA	Piston in head adjusted by fluid means	23
123/78E	Varying means is in the connecting rod	106
123/78F	Varying means is in the crankshaft	77
123/78B	Varying means is in the piston	46
123/78BA	Varying means is in the piston connection	34
123/195R	Frame construction	395
123/195C	All covers	562
123/195A	Auxiliaries, brackets	248
123/195E	Electrical	32
123/195HC	Horizontal cylinder	75
123/195H	Horizontal stress members	109
123/195AC	Inclined cylinder	41
123/195P	Outboard motor frames	168
123/195S	Sheet metal frames	36
123/46R	Free piston	147
123/46E	Electric generating means	32
123/46H	Hammer	38
123/46B	Phasing means between two or more units	14
123/46SC	Single chamber; one piston	132
123/46A	Two chambers; one piston	23
123/DIG.13	Gas	5
123/24R	Gunpowder	9
123/24A	Single shot gun powder motors	3
123/594	High tension ignition system	31
123/620	Additional spark energy supply	153
123/644	Current or voltage sensing in coil primary	218
123/640	Dual systems	76
123/641	One for starting	9
123/643	Electronic cylinder sequencing	198
123/628	Having a continuous high voltage output to the high voltage distributor	7
123/634	Having a specific ignition coil	249
123/647	Having a specific mounting of system component	136
123/621	Having an ignition coil with multiple primary or secondary windings	34
123/622	Separate circuit for each winding	26
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	189
123/611	Dwell maintained at constant value	24
123/610	Using a monostable multivibrator	19
123/612	Having engine component position sensor	63
123/614	Including a zero crossing detector	9
123/615	Includng an oscillator	12
123/617	Inductive or magnetic sensor	210
123/613	Optical sensing	66
123/616	Piezoelectric sensor	6
123/648	Having scr triggered by lowering cathode voltage below ground	12
123/618	Having specific trigger circuitry	93
123/619	Oscillatory trigger circuit	12
123/623	Having supply voltage regulation	19
123/606	High frequency ignition system	108
123/607	Free running oscillator supplies coil primary	20
123/608	Having a specific spark plug	12
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	11
123/636	Multiple spark ignition system	24
123/638	System fires multiple spark plugs per cylinder	52
123/637	System fires single spark plug per cylinder	93
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	38
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	39
123/655	Diode is in series with coil primary or secondary	60
123/651	Interrupter is multiple transistor circuit	115
123/652	Interrupter is single transistor	52
123/633	Radio interference protection	82
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	26
123/630	Safety device	172
123/632	Ignition switch opened when engine stops	21
123/631	Reverse engine rotation protection	37
123/635	Specific coil location	147
123/596	Using capacitive storage and discharge for spark energy	48
123/599	Having a magneto	130
123/603	Antireverse protection	23
123/601	Specific design of charge or trigger winding core	35
123/600	Triggering voltage obtained from capacitor charging winding	20
123/605	Having a specific capacitor, ignition coil means, or switching element circuit path	108
123/598	Having an oscillator	76
123/604	Inductive capacitive discharge system	44
123/597	Regulating sensed ignition capacitor voltage	19
123/DIG.12	Hydrogen	226
123/143R	Igniters	30
123/144	Flame	3
123/143A	High compression igniters	13
123/145R	Incandescent	38
123/145A	Electric (incandescent ignitors using electricity as a source of heat)	331
123/146	Valve controlled	0
123/143C	Insulated casing enclosing wires leading to plugs, distributor, etc.	83
123/146.5R	Sparkers	15
123/150	Combined adjusting and exhaust regulating	1
123/151	Combined sparker and valve	11
123/152	Combined valve and sparker operating	6
123/146.5D	Devices for opening the ignition circuit when engine stops in order to save battery	13
123/149R	Dynamos	40
123/149D	Flywheel type	92
123/149B	Impulse starters	0
123/149A	Inductor type	18
123/149G	Movable pole shoes and bell-magnets	1
123/149E	Oscillating armature type	2
123/149H	Reciprocating	1
123/149F	Special waveforms	2
123/149FA	Double current generators	0
123/146.5C	Fluid level or pressure-actuated ignition switches	2
123/146.5B	Ignition locks	29
123/147	Low tension	0
123/153	Make and break	2
123/164	Adjusting mechanism	1
123/154	Electromagnetic	3
123/160	Oscillating electrodes	0
123/162	Piston-operated	12
123/155	Pneumatic	2
123/156	Reciprocating electrode	1
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	80
123/169EC	Adjustable and replaceable	6
123/169EA	Adjustable gap	10
123/169CL	Cleaners automatic	12
123/169CM	Cleaners manual	0
123/169CA	Compound insulation	2
123/169C	Cool	8
123/169CB	Core retaining	2
123/169DW	Disk wrappings type	0
123/169EL	Electrodes	141
123/169E	Insulated electrodes	21
123/169P	Insulating protecting	10
123/169PB	Heaters	6
123/169PH	Hoods and shields	38
123/169PA	Tubes and attachments	107
123/169G	Intensity in gap only	3
123/169MG	Multiple firing gap	39
123/169EB	Replaceable electrode	4
123/169TC	Transparent combustion chamber	0
123/169V	Valved	23
123/146.5A	Timers	258
123/143B	Special charge igniters	131
123/184.21	Intake manifold	283
123/184.28	For engine having radiating cylinders	5
123/184.31	For v-type engine	88
123/184.32	For use with carburetor upstream of manifold	39
123/184.33	Inlet manifold heated by outlet manifold	10
123/184.34	Manifold having plenum	92
123/184.35	Plural plenums	34
123/184.36	Interconnected between plenums	53
123/184.37	Multiple passage leading to inlet of one cylinder	24
123/184.29	Star-type engine	0
123/184.38	For in-line engine	66
123/184.39	For use with carburetor upstream of manifold	31
123/184.41	Intake manifold heated by outlet manifold	16
123/184.42	Manifold having plenum	157
123/184.43	Plural plenums	20
123/184.44	Interconnection between plenums	14
123/184.45	Multiple passage leading to inlet of one cylinder	66
123/184.46	For use with carburetor upstream of manifold	36
123/184.47	Manifold having plenum	90
123/184.51	Adjustable plenum	11
123/184.48	Plural plenums	13
123/184.49	Interconnection between plenums	26
123/184.61	Manifold material or composition	191
123/184.53	Manifold tuning, balancing or pressure regulating means	221
123/184.56	Adjustable cross section passage	83
123/184.55	Adjustable length passage	175
123/184.59	Interconnection between passages	42
123/184.57	Resonator chamber	163
123/184.58	Return loop to inlet	11
123/184.54	With back flow prevention valve	66
123/184.52	Multiple passage leading to inlet of one cylinder	31
123/184.22	Passage to crankcase	12
123/184.23	For use with carburetor upstream of manifold	16
123/184.24	Manifold having plenum	38
123/184.25	Plural plenums	7
123/184.26	Interconnection between plenums	7
123/184.27	Multiple passage leading to inlet of head	1
123/DIG.1	Interchangeable	18
123/22	Internal combustion and air	3
123/19	Liquid piston	16
123/196R	Lubricators	917
123/196CP	Crankcase, pressure control	95
123/196A	Filtering	246
123/196AB	Heating and cooling	255
123/196S	Safety devices	293
123/196V	Sleeve valve lubrication	3
123/196M	Upper cylinder lubricants	128
123/196W	Vertical shaft	171
123/306	Means to whirl fluid before, upon, or after entry into combustion chamber	301
123/308	Having multiple oxidant inlet means	466
123/309	Specific spark plug location	36
123/307	Structural projection on working piston causes whirling	46
123/1R	Miscellaneous	60
123/1A	Fuels, lubricants and additives	643
123/DIG.3	Model	29
123/52.1	Multiple cylinder	16
123/53.1	Cylinder offset from crankshaft axis	41
123/53.5	Crankshaft between parallel cylinders	19
123/53.3	Cylinders opposite	7
123/53.4	Two-stroke cycle	7
123/53.2	Multiple crankshafts	12
123/53.6	Cylinders having opposing heads	25
123/58.1	Cylinders in-line	22
123/58.7	Cylinder supercharged by pressure pulse of released exhaust gases	11
123/58.8	Exhaust to next cylinder ready to fire	53
123/58.4	Lengthwise charging	10
123/58.5	Step piston	6
123/58.2	Locked pistons	10
123/58.3	Two-stroke cycle	5
123/59.6	Multiple crankshafts	28
123/58.9	Oscillating or reciprocating, nonpoppet valve	6
123/59.5	Plural carburetors	21
123/59.1	Rotary valve	7
123/59.4	Disc valve	1
123/59.3	Sleeve valve	7
123/59.2	Tapered	0
123/58.6	Step piston	14
123/59.7	Two-stroke cycle	18
123/54.1	Cylinders radiating	28
123/54.4	"v" type	120
123/54.5	Odd number of cylinders	5
123/54.6	Six cylinder	30
123/54.7	Eight cylinder	15
123/54.8	More than eight cylinder	4
123/55.2	Cylinders opposite	33
123/55.3	Cam on rotary output shaft	29
123/55.4	Four-stroke cycle	14
123/55.5	Cylinders opposite and aligned	40
123/55.6	Two-stroke cycle	6
123/55.7	Cylinders opposite and aligned	54
123/55.1	Semi-radial	4
123/54.2	Star	31
123/54.3	Cam on rotary output shaft	34
123/56.1	Having rotary output shaft parallel to cylinders	37
123/56.2	Cam on rotary output shaft	25
123/56.8	Motion converting means between two banks of cylinders	18
123/56.9	Multiple cam drives	16
123/56.7	Single bank of cylinders	15
123/56.3	Swash plate type	23
123/56.5	Motion converting means between two banks of cylinders	12
123/56.6	Multiple swash plate drive	16
123/56.4	Single bank of cylinders	31
123/57.1	Shaft rotates through piston	7
123/60.1	Locked annular piston	15
123/52.2	Simultaneous compression, distinct pistons, restricted communication to a single combustion chamber	4
123/52.3	Four-stroke cycle	18
123/52.4	Multiple crankshafts	21
123/52.5	Two-stroke cycle	7
123/52.6	Multiple crankshafts	6
123/DIG.8	Multiple engine units	46
123/37	Multiple explosion	13
123/51R	Multiple piston, common nonrestrictive combustion chamber	42
123/51A	Four-cycle	18
123/51AA	Four-cycle separate crankshaft for piston	24
123/51AC	Two or more combustion chambers between the piston	0
123/51B	Two-cycle	50
123/51BD	Inlet or exhaust ports in two or more planes	23
123/51BB	Piston offset from crankshaft	12
123/51BC	Plural combustion chamber and plural piston	6
123/51BA	Two-cycle separate crankshaft for piston	49
123/39	Noncompression	13
	Oil engines
	Pump supply to air inlet
123/42	Oscillating cylinder	25
123/18R	Oscillating piston	67
123/18A	Toroidal cylinder	25
123/193.1	Particular piston and enclosing cylinder construction	55
123/193.2	Cylinder detail	243
123/193.5	Cylinder head	489
123/193.3	Having detail of connection to other cylinder structure	221
123/193.6	Piston	708
123/193.4	Having detail to guiding structure cooperating with cylinder	118
123/90.1	Poppet valve operating mechanism	38
123/90.31	Camshaft drive means	975
123/90.6	Cam	317
123/90.11	Electrical system	710
123/90.21	Follower displaced axially of camshaft	14
123/90.12	Hydraulic system	589
123/90.13	With manifold and distributor	96
123/90.33	Lubrication	147
123/90.34	Camshaft	155
123/90.38	Housings	205
123/90.36	Rocker fulcrum as conduit	104
123/90.37	Seals and shields	100
123/90.35	Tappet as conduit	58
123/90.27	Overhead camshaft	446
123/90.22	Plural valve trains, single actuator	123
123/90.23	Intake and exhaust	76
123/90.14	Pneumatic system	58
123/90.39	Rocker	564
123/90.44	Cam engaged	382
123/90.41	Individually fulcrumed	211
123/90.43	Lash adjustment at fulcrum	152
123/90.42	Rotation prevention	85
123/90.45	Lash adjustment	114
123/90.46	Hydraulic	162
123/90.4	Plural valves	109
123/90.47	Yieldable engagement	14
123/90.61	Rod	88
123/90.64	Pull type	5
123/90.62	Self-adjusting	6
123/90.63	Hydraulic	14
123/90.65	Spring	84
123/90.66	Attenuated	13
123/90.67	Seat and retainer	70
123/90.48	Tappet	275
123/90.51	Composition, surface treatment manufacture	154
123/90.49	Cushion and silencer	58
123/90.52	Lash adjustment	142
123/90.53	Self-operating	11
123/90.55	Hydraulic	348
123/90.56	Pressure flow upwardly into pressure chamber	25
123/90.58	Self-contained	39
123/90.57	Vent or bleed means for pressure chamber	59
123/90.59	With provision for horizontal positioning	22
123/90.54	Screw	18
123/90.5	Rotation prevention	158
123/90.24	Valve driven closed	92
123/90.26	By cam-actuated unitary follower	32
123/90.25	By valve-opening rocker	31
123/90.32	With alternate interruption of drive train	19
123/90.2	With compound movement of cam follower	68
123/90.15	With means for varying timing	1793
123/90.16	Cam-to-valve relationship	1470
123/90.17	Camshaft or cam characteristics	1511
123/90.18	Axially shiftable camshaft	144
123/90.28	With nonvalving movement (e.g., about valve stem)	34
123/90.29	Oscillating movement converted internally	5
123/90.3	Positive rotation provided by internal means	19
123/90.19	With temperature compensation	39
123/253	Precombustion and main combustion chambers in series	20
123/280	Atomizer, deflector, or shield in precombustion chamber	59
123/254	Chamber temperature control means	83
123/274	Having combustible mixture forming means	82
123/275	By fuel injection into precombustion or main combustion chamber	149
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	219
123/262	Having fluid whirling means	95
123/263	Whirling in precombustion chamber only	130
123/286	Having specific connecting passage means between precombustion and main combustion chambers	99
123/289	Fluid flow through passage controlled by working piston	26
123/291	Multiple connecting passages	17
123/290	With whirling	16
123/288	Having fuel, a combustible mixture, or air added in the connecting passage	10
123/293	Having multiple passages	108
123/287	With ignition means in connecting passage	42
123/292	With valve means or variable orifice means in the passage	71
123/258	Having timed valves to precombustion and main combustion chambers	26
123/259	Having volumetric relation between precombustion and main combustion chambers	63
123/279	Piston carried precombustion chamber	140
123/269	Piston shape complements precombustion chamber discharge	50
123/256	Plural precombustion chambers	71
123/265	Precombustion and main chambers form an "i" head	10
123/266	Precombustion chamber assembly inserted in spark plug hole	52
123/267	Separate fuel or combustible mixture added to precombustion chamber	35
123/285	Precombustion chamber having a specific shape	49
123/264	Precombustion chamber is carried by a valve	6
123/270	Precombustion chamber liner or coating	69
123/272	Including combustion catalyst liner or coating means	21
123/271	With liner mounting means	40
123/273	Precombustion chamber mounting means	33
123/281	Precombustion chamber shape is a figure of revolution	27
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	60
123/268	Valveless precombustion chamber	74
123/255	Vaporizing in precombustion chamber	39
123/260	With ignition means particularly positioned relative to precombustion and main combustion chambers	167
123/261	With injection means particularly positioned relative to precombustion and main combustion chambers	90
123/50R	Reciprocating cylinder	17
123/50A	Four-cycle	4
123/50B	Two-cycle	7
123/41R	Reversible	15
123/41E	Electrical	24
123/45R	Rotary reciprocating piston	27
123/45A	Piston and crankshaft coaxial	22
123/200	Rotary	27
123/247	Only combustion and expansion of charge in engine	10
123/248	Abutment	18
123/249	Interengaging rotors	19
123/201	Reversible	3
123/216	With charge treatment means	39
123/217	Exhaust gas recirculation	7
123/220	Preheating	12
123/218	Rotor shape	19
123/219	Stratification	33
123/203	With combusted gas treatment or handling means	27
123/204	With compression volume means in uninterrupted communication with expansion volume means	55
123/241	With compression, combustion, and expansion in a single variable volume	108
123/244	Abutment	20
123/245	Alternately approaching and receding elements	84
123/246	Eccentric interengaging rotors	52
123/242	Planetating rotor	68
123/243	Vane	70
123/205	With fuel injection means	41
123/206	And pump or control means	24
123/208	Into intake chamber	5
123/207	Into intake port	8
123/209	Into prechamber	17
123/210	With ignition means	26
123/211	Plural	25
123/202	With means to control degree of compression	18
123/212	With plural compression volume means	10
123/213	In series	19
123/214	With plural expansion volume means	6
123/215	In series	12
123/221	With transfer means intermediate single compression volume means and single expansion volume means	21
123/234	Compression volume means axially disposed relative to expansion volume means	19
123/237	Abutment	33
123/238	Interengaging rotors	37
123/235	Transfer means in rotor	28
123/236	Vane	47
123/228	Compression volume means circumferentially disposed relative to expansion volume means	43
123/230	Compression volume is also expansion volume	9
123/232	Interengaging rotors	25
123/233	Nonparallel axes	10
123/229	Transfer means in rotor	32
123/231	Vane	25
123/239	Compression volume means radially disposed relative to expansion volume means	14
123/240	Concentric	16
123/222	Isolated charge in movable transfer element	18
123/223	Reciprocating or oscillating compression volume means	8
123/224	Radially spaced from expansion volume means	3
123/225	Abutment acts as compression means	3
123/226	Compression means disposed in rotor	9
123/227	Vane acts as compression means	11
123/43R	Rotating cylinder	52
123/43C	Cam transmission	22
123/43A	Parallel to shaft	33
123/43AA	Parallel to shaft cam track	28
123/44R	Radial	34
123/44E	Cam transmission	34
123/44B	Combustion chamber is center of star	28
123/44C	Two-cycle	40
123/44D	Valve casing-cylinders have no valves but have ports which register with ports in casing	50
123/44A	Wheel	1
123/43B	Toroidal cylinders	10
123/64	Six-cycle	42
123/23	Solid fuel	74
123/406.11	Spark ignition timing control	35
123/406.75	Centrifugal timing mechanism	23
123/406.12	Electronic control	42
123/406.5	Acceleration or deceleration responsive	31
123/406.51	Acceleration responsive	61
123/406.49	Barometric pressure responsive	19
123/406.19	Closed loop feedback control of spark timing	31
123/406.26	Combustion condition responsive	69
123/406.28	Combustion condition sensed by optical sensor	26
123/406.27	Combustion failure responsive (e.g., misfire)	50
123/406.41	Engine cylinder pressure responsive	53
123/406.42	Peak pressure responsive	62
123/406.43	Responsive to derivative, integral or average of pressure	26
123/406.29	Engine knock responsive	111
123/406.3	Fuel quality or composition signal responsive	42
123/406.31	Alcohol concentration responsive	5
123/406.32	Having a plurality of speed/load maps related to fuel quality or composition	20
123/406.37	Having specific knock detecting means	103
123/406.4	And specific system component mounting or location details	14
123/406.38	Knock frequency distribution pattern responsive	54
123/406.39	Knock signal counting	32
123/406.34	Modification of knock signal by engine operating condition signal	34
123/406.35	Engine operating condition is load or speed	71
123/406.36	Acceleration or deceleration responsive	38
123/406.33	With modifying or updating memory (i.e., learning)	64
123/406.23	Engine output (e.g., torque, speed, horsepower) or fuel consumption optimization	123
123/406.44	Exhaust gas condition responsive control of spark timing	57
123/406.24	Including means responsive to the instantaneous change in engine speed (e.g., roughness, unstable combustion, etc.)	106
123/406.25	Acceleration or deceleration responsive	18
123/406.2	Separate control for each cylinder	34
123/406.22	Cylinder pressure responsive	31
123/406.21	Knock responsive	85
123/406.58	Having engine shaft rotational position signal generator (e.g., crank shaft, cam shaft)	87
123/406.59	Speed responsive timing control	96
123/406.6	Having counter or addressable memory (e.g., digital timing circuit)	88
123/406.64	Memory addressed by engine speed or load	40
123/406.65	With microprocessor	122
123/406.61	Plural engine shaft position sensors	26
123/406.62	Position sensors at separate shafts	45
123/406.63	Position sensors having different pulse rates	50
123/406.66	With resistor/capacitor (rc) timing circuit (e.g., multivibrator)	86
123/406.45	Including control of combustible mixture or a constituent thereof (e.g., air, fuel, exhaust gas)	87
123/406.46	Acceleration or deceleration responsive	40
123/406.48	With exhaust gas recirculation (egr) control	47
123/406.47	With fuel injection control	209
123/406.53	Starting condition responsive	116
123/406.54	Start detected by engine speed	29
123/406.55	Temperature responsive (e.g., ambient, engine, etc.)	121
123/406.52	Throttle position responsive	97
123/406.13	With fail-safe, backup or malfunction detecting means	70
123/406.17	Cylinder pressure sensor malfunction responsive	5
123/406.18	Engine shaft rotational position sensor malfunction responsive (e.g., crank shaft, cam shaft)	57
123/406.15	Fuel sensor malfunction responsive	5
123/406.14	Including spark failure responsive means (e.g., misfire)	46
123/406.16	Knock control malfunction responsive	54
123/406.56	With magneto	42
123/406.57	And capacitor discharge for ignition spark energy	133
123/406.74	Mechanical or hydraulic link to throttle valve or accelerator	29
123/406.76	Spark delay actuated or deactuated by starting device	2
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	109
	Starting device
123/179.7	Auxiliary fuel supply device	22
123/179.14	Condition responsive	43
123/179.15	Temperature	89
123/179.9	Priming means	41
123/179.12	Condition responsive	8
123/179.13	Temperature	16
123/179.11	Manual pump device or squeeze bulb	74
123/179.8	Starting fluid	56
123/182.1	Compression relieving type	177
123/179.3	Condition responsive control of starting device	323
123/179.4	Including automatic engine stop	177
123/179.6	Control of glow plug during starting	91
123/179.5	Control of spark ignition during starting	127
123/179.24	Either power or manual starting device	38
123/179.27	For airplane	17
123/185.7	Manual type	6
123/183.1	Gunpowder type	0
123/179.31	Having fluid-driven starting motor	60
123/179.25	Having specific mounting or drive connection for electric starter motor	126
123/179.26	For nonoperator supporting wheeled platform	18
123/179.19	Includes auxiliary internal combustion engine	20
123/179.22	Inertia type	20
123/185.1	Mechanical	17
123/185.2	Includes cable	34
123/185.3	Including recoil mechanism	146
123/185.4	Lever connected to the cable	15
123/185.9	Includes coaxial cooperating threaded members in linkage	6
123/185.8	Includes friction means in linkage	3
123/185.5	Includes lever or slide linkage	6
123/185.6	Lever or slide actuates a gear segment	8
123/185.14	Includes mechanical potential motor (e.g., spring motor)	55
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	7
123/179.2	Remote control	94
123/184.1	With auxiliary igniters	2
123/179.21	With charge or cylinder heating	202
123/179.28	With electric generating means	52
123/179.29	Auxiliary magneto	6
123/179.16	With fuel or intake air control	277
123/179.17	Fuel injection pump	269
123/179.18	Intake air control	192
123/DIG.4	Stratification	27
123/197.1	Transmission mechanism from piston	160
123/197.4	Crankshaft and connecting rod	284
123/197.3	Particular connecting rod	150
123/197.5	Including clutch	21
123/197.2	With particular piston	34
123/65R	Two-cycle	76
123/65BA	Blowers	76
123/66	Combined pump and motor cylinder	14
123/67	Divided pump discharge	4
123/65EM	Exhaust manifolds	25
123/65PE	Exhaust ports	180
123/65A	Inlet and exhaust ports in two or more planes	69
123/65VD	Intake and exhaust valve in top of cylinder	44
123/65VC	Lengthwise scavenging exhaust above	38
123/65VB	Lengthwise scavenging list above	34
123/65PD	Port deflectors	23
123/65P	Ports	101
123/70R	Pump and cylinder adjacent	87
123/70V	Lengthwise scavenging of power cylinder	10
123/71R	Pump and cylinder coaxial	44
123/71V	Lengthwise scavenging of cylinder from head to piston	4
123/71VA	Sleeve valve	2
123/72	Pump and cylinder inclined	8
123/68	Pump compression	42
123/65B	Pumps	16
	Rear compression
123/73R	Crankcase	128
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	12
123/73DA	Charge to crankcase through crankshaft	4
123/73PP	Distinct passages from crankcase to cylinder	238
123/73B	Fuel to bypass	60
123/73BA	Lengthwise scavenging of cylinders from head	8
123/73A	Fuel to crankcase	276
123/73C	Fuel to cylinder	182
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	4
123/73AD	Lubricant oil and fuel mixing devices	177
123/73AA	Ported piston	36
123/73AV	Valved	5
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	7
123/73S	Supercharging of crankcase	11
123/73V	Valves for crankcase	92
123/73AC	Varies compression space	4
123/74R	Cylinder	19
123/74AC	Cross head between piston and crank	5
123/74AE	Enclosed crankcase	11
123/74A	Fuel to rear of piston	6
123/74AA	Lengthwise scavenging from head	1
123/74B	Lengthwise bypass	2
123/74C	Lengthwise cylinder combustion space	0
123/74AP	Reduced portion of piston acts as guide	2
123/74D	Slide valve between chamber of pump and crankcase	2
123/65E	Scavenging by inertia of exhaust gas and charging by use of pressure waves	19
123/69R	Separate air and gas pumps	16
123/69V	Lengthwise scavenging of cylinder by gas from cylinder head to piston	6
123/65SP	Single port for inlet and exhaust	1
123/65S	Step piston (see sub. 59 bs)	19
123/65WV	Vacuum intake	3
123/65V	Valves	83
123/65VS	Sleeve driven by auxiliary crankshafts	2
123/65VA	Sleeve valve	17
123/65W	Whirl through piston-controlled ports	16
123/65WA	Whirl in top of cylinders and lengthwise scavenging	3
123/47R	Valved piston	21
123/47A	Charge passes from crankcase through valve in piston	17
123/47AB	Inlet and exhaust valve in piston	4
123/47AA	Lost motion connection actuates valve	2
123/188.1	Valve	24
123/188.7	Combustion improving accessory	40
123/189	Detachable	7
123/188.9	Guide, lubricant, or coolant	96
123/188.17	Having actuation springs concentric with valve stem	28
123/188.6	Packing	78
123/188.4	Reciprocating valve	47
123/188.2	Poppet	42
123/188.3	Material or structure	176
123/188.16	Pivoted	4
123/188.15	Shepherd type	0
123/188.5	Sleeve	20
123/190.1	Rotary	56
123/190.14	Disc, cone, or sphere shaped	56
123/190.15	Controls plural cylinders	10
123/190.4	Double function type	33
123/190.6	Elongated rotary double-function valve	30
123/190.7	Tapered	3
123/190.5	For two or more cylinders	20
123/190.8	In horizontal plane above cylinder	68
123/190.9	Tapered	3
123/190.11	In horizontal plane on the side of the cylinder	5
123/190.3	For crankcase	3
123/190.16	Lubricant	17
123/190.17	Seal	79
123/190.2	Single function, (i.e., exhaust and intake by separate tube)	92
123/190.12	Sleeve	21
123/190.13	With lubrication means	3
123/188.14	Valve head cooperates with manifold	238
123/188.8	Valve seat relation	125
123/188.11	Wear feature	32
123/188.12	For spring	10
123/188.13	Including attaching means	27
123/192.1	Vibration compensating device	182
123/192.2	Balancing arrangement	317
123/25R	Water and hydrocarbon	101
123/25N	Automatic water control interconnected with throttle	17
123/25M	Automatic water control; speed	23
123/25L	Automatic water control; suction	68
123/25K	Automatic water control; thermostatic	23
123/25J	Automatic water control	60
123/25Q	Cooling regulation	4
123/25P	Steam injection	64
123/25H	Washers and cleaners with heat	3
123/25G	Washers and cleaners	7
123/25A	Water in charge	115
123/25C	Water into cylinder	114
123/25E	Water introduced by mixing with other materials	98
123/25F	Water plus heat by mixing with other materials	20
123/25B	Water plus heat into charge	91
123/25D	Water plus heat into charge	32
123/142.5R	With heating means	209
123/142.5E	Electric heaters for heating cooling system	101

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