F01B1/00	7	Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements (F01B3/00, F01B5/00 take precedence)	F01B1/00	F01B1/00		78
F01B1/01	8	with one single cylinder	F01B1/01	F01B1/01		86
F01B1/02	8	with cylinders all in one line	F01B1/02	F01B1/02		91
F01B1/04	8	with cylinders in V-arrangement	F01B1/04	F01B1/04		120
F01B1/06	8	with cylinders in star or fan arrangement	F01B1/06	F01B1/06		106
F01B1/0603	9	{the connection of the pistons with an element being at the outer ends of the cylinders}	F01B1/06	F01B1/06		92
F01B1/0606	10	{with cam-actuated distribution member(s)}	F01B1/06	F01B1/06		86
F01B1/061	10	{with two or more series radial piston-cylinder units}	F01B1/06	F01B1/06		5
F01B1/0613	11	{directly located side by side}	F01B1/06	F01B1/06		30
F01B1/0617	11	{coupling of several cylinders-barrels}	F01B1/06	F01B1/06		7
F01B1/062	9	{the connection of the pistons with an actuating or actuated element being at the inner ends of the cylinders}	F01B1/06	F01B1/06		298
F01B1/0624	10	{with cam-actuated distribution member(s)}	F01B1/06	F01B1/06		181
F01B1/0627	11	{each machine piston being provided with channels, which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit}	F01B1/06	F01B1/06		31
F01B1/0631	10	{the piston-driving or -driven cam being provided with an inlet or an outlet}	F01B1/06	F01B1/06		23
F01B1/0634	10	{with two or more series radial piston-cylinder units}	F01B1/06	F01B1/06		12
F01B1/0637	11	{directly located side by side}	F01B1/06	F01B1/06		35
F01B1/0641	9	{Details, component parts specially adapted for such machines}	F01B1/06	F01B1/06		41
F01B1/0644	10	{Pistons}	F01B1/06	F01B1/06		351
F01B1/0648	10	{Cams}	F01B1/06	F01B1/06		165
F01B1/0651	11	{consisting of several cylindrical elements, e.g. rollers}	F01B1/06	F01B1/06		20
F01B1/0655	10	{cylinders}	F01B1/06	F01B1/06		232
F01B1/0658	10	{Arrangements for pressing or connecting the pistons against the actuating or actuated cam}	F01B1/06	F01B1/06		133
F01B1/0662	11	{hydraulically}	F01B1/06	F01B1/06		11
F01B1/0665	10	{Disconnecting the pistons from the actuating or actuated cam}	F01B1/06	F01B1/06		14
F01B1/0668	10	{Supporting and guiding means for the piston}	F01B1/06	F01B1/06		351
F01B1/0672	10	{Draining of the machine housing; arrangements dealing with leakage fluid}	F01B1/06	F01B1/06		70
F01B1/0675	9	{Controlling}	F01B1/06	F01B1/06		29
F01B1/0679	10	{by using a valve in a system with several pump or motor chambers, wherein the flow path through the chambers can be changed, e.g. series-parallel}	F01B1/06	F01B1/06		21
F01B1/0682	10	{by changing the effective cross sectional piston working surface}	F01B1/06	F01B1/06		1
F01B1/0686	10	{by changing the effective piston stroke}	F01B1/06	F01B1/06		14
F01B1/0689	11	{by changing the excentricity of one element relative to another element}	F01B1/06	F01B1/06		244
F01B1/0693	10	{by changing the phase relationship between two actuating or actuated cams}	F01B1/06	F01B1/06		17
F01B1/0696	10	{by changing the phase relationship between the actuating or actuated cam and the distributing means}	F01B1/06	F01B1/06		77
F01B1/08	8	with cylinders arranged oppositely relative to main shaft and of "flat" type	F01B1/08	F01B1/08		275
F01B1/10	8	with more than one main shaft, e.g. coupled to common output shaft	F01B1/10	F01B1/10		106
F01B1/12	8	Separate cylinder-crankcase elements coupled together to form a unit	F01B1/12	F01B1/12		187
F01B3/00	7	Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis	F01B3/00	F01B3/00		127
F01B3/0002	8	{having stationary cylinders}	F01B3/00	F01B3/00		195
F01B3/0005	9	{having two or more sets of cylinders or pistons}	F01B3/00	F01B3/00		279
F01B3/0008	9	{having self-acting distribution members, e.g. actuated by working fluid}	F01B3/00	F01B3/00		118
F01B3/0011	10	{Cylindrical distribution members}	F01B3/00	F01B3/00		33
F01B3/0014	10	{Conical distribution members}	F01B3/00	F01B3/00		5
F01B3/0017	9	{Component parts, details, e.g. sealings, lubrication}	F01B3/00	F01B3/00		38
F01B3/002	10	{Cylinders}	F01B3/00	F01B3/00		40
F01B3/0023	10	{Actuating or actuated elements}	F01B3/00	F01B3/00		129
F01B3/0026	11	{Actuating or actuated element bearing means or driving or driven axis bearing means}	F01B3/00	F01B3/00		60
F01B3/0029	10	{Casings, housings}	F01B3/00	F01B3/00		30
F01B3/0032	8	{having rotary cylinder block}	F01B3/00	F01B3/00		412
F01B3/0035	9	{having two or more sets of cylinders or pistons}	F01B3/00	F01B3/00		215
F01B3/0038	10	{inclined to main shaft axis}	F01B3/00	F01B3/00		124
F01B3/0041	9	{Arrangements for pressing the cylinder barrel against the valve plate, e.g. fluid pressure}	F01B3/00	F01B3/00		158
F01B3/0044	9	{Component parts, details, e.g. valves, sealings, lubrication}	F01B3/00	F01B3/00		68
F01B3/0047	10	{Particularities in the contacting area between cylinder barrel and valve plate}	F01B3/00	F01B3/00		134
F01B3/005	11	{Bearing arrangements}	F01B3/00	F01B3/00		20
F01B3/0052	10	{Cylinder barrel}	F01B3/00	F01B3/00		413
F01B3/0055	10	{Valve means, e.g. valve plate}	F01B3/00	F01B3/00		395
F01B3/0058	11	{Cylindrical valve means}	F01B3/00	F01B3/00		57
F01B3/0061	11	{Conical valve means}	F01B3/00	F01B3/00		3
F01B3/0064	10	{Machine housing}	F01B3/00	F01B3/00		219
F01B3/0067	11	{cylinder barrel bearing means}	F01B3/00	F01B3/00		134
F01B3/007	10	{Swash plate}	F01B3/00	F01B3/00		279
F01B3/0073	11	{swash plate bearing means or driving or driven axis bearing means}	F01B3/00	F01B3/00		245
F01B3/0076	9	{Connection between cylinder barrel and inclined swash plate}	F01B3/00	F01B3/00		99
F01B3/0079	8	{having pistons with rotary and reciprocating motion, i.e. spinning pistons}	F01B3/00	F01B3/00		207
F01B3/0082	8	{Details}	F01B3/00	F01B3/00		11
F01B3/0085	9	{Pistons}	F01B3/00	F01B3/00		462
F01B3/0088	10	{Piston shoe retaining means}	F01B3/00	F01B3/00		249
F01B3/0091	9	{Casings, housings}	F01B3/00	F01B3/00		12
F01B3/0094	9	{Driving or driven means}	F01B3/00	F01B3/00		58
F01B2003/0097	10	{Z-shafts, i.e. driven or driving shafts in Z-form}	F01B3/00	F01B3/00		16
F01B3/02	8	with wobble-plate	F01B3/02	F01B3/02		406
F01B3/04	8	the piston motion being transmitted by curved surfaces	F01B3/04	F01B3/04		574
F01B3/045	9	{by two or more curved surfaces, e.g. for two or more pistons in one cylinder}	F01B3/04	F01B3/04		133
F01B3/06	9	by multi-turn helical surfaces and automatic reversal	F01B3/06	F01B3/06		189
F01B3/08	10	the helices being arranged on the pistons	F01B3/08	F01B3/08		69
F01B3/10	8	Control of working-fluid admission or discharge peculiar thereto	F01B3/10	F01B3/10		33
F01B3/101	9	{for machines with stationary cylinders}	F01B3/10	F01B3/10		45
F01B3/102	10	{Changing the piston stroke by changing the position of the swash plate}	F01B3/10	F01B3/10		102
F01B3/103	9	{for machines with rotary cylinder block}	F01B3/10	F01B3/10		32
F01B3/104	10	{by turning the valve plate}	F01B3/10	F01B3/10		108
F01B3/105	10	{by moving the swash plate in a direction perpendicular to the axis of rotation of the cylinder barrel}	F01B3/10	F01B3/10		14
F01B3/106	10	{by changing the inclination of the swash plate}	F01B3/10	F01B3/10		288
F01B3/107	11	{using wedges}	F01B3/10	F01B3/10		5
F01B3/108	10	{by turning the swash plate (with fixed inclination)}	F01B3/10	F01B3/10		23
F01B3/109	10	{by changing the inclination of the axis of the cylinder barrel relative to the swash plate}	F01B3/10	F01B3/10		140
F01B5/00	7	Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis	F01B5/00	F01B5/00		92
F01B5/003	8	{the connection of the pistons with an actuated or actuating element being at the outer ends of the cylinders}	F01B5/00	F01B5/00		49
F01B5/006	8	{the connection of the pistons with an actuated or actuating element being at the inner ends of the cylinders}	F01B5/00	F01B5/00		28
F01B7/00	7	Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft F01B1/08)	F01B7/00	F01B7/00		62
F01B7/02	8	with oppositely reciprocating pistons	F01B7/02	F01B7/02		182
F01B7/04	9	acting on same main shaft	F01B7/04	F01B7/04		85
F01B7/06	10	using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa	F01B7/06	F01B7/06		21
F01B7/08	11	with side rods	F01B7/08	F01B7/08		51
F01B7/10	11	having piston-rod of one piston passed through other piston	F01B7/10	F01B7/10		30
F01B7/12	10	using rockers and connecting-rods	F01B7/12	F01B7/12		271
F01B7/14	9	acting on different main shafts	F01B7/14	F01B7/14		606
F01B7/16	8	with pistons synchronously moving in tandem arrangement	F01B7/16	F01B7/16		163
F01B7/18	8	with differential piston (F01B7/20 takes precedence)	F01B7/18	F01B7/18		63
F01B7/20	8	with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other	F01B7/20	F01B7/20		219
F01B9/00	7	Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00	F01B9/00	F01B9/00		100
F01B9/02	8	with crankshaft	F01B9/02	F01B9/02		732
F01B9/023	9	{of Bourke-type or Scotch yoke}	F01B9/02	F01B9/02		367
F01B9/026	9	{Rigid connections between piston and rod; Oscillating pistons}	F01B9/02	F01B9/02		603
F01B9/04	8	with rotary main shaft other than crankshaft	F01B9/04	F01B9/04		217
F01B9/042	9	{the connections comprising gear transmissions}	F01B9/04	F01B9/04		184
F01B2009/045	10	{Planetary gearings}	F01B9/04	F01B9/04		137
F01B9/047	9	{with rack and pinion}	F01B9/04	F01B9/04		485
F01B9/06	9	the piston motion being transmitted by curved surfaces	F01B9/06	F01B9/06		775
F01B2009/061	10	{by cams}	F01B9/06	F01B9/06		26
F01B2009/063	11	{Mono-lobe cams}	F01B9/06	F01B9/06		68
F01B2009/065	11	{Bi-lobe cams}	F01B9/06	F01B9/06		151
F01B2009/066	11	{Tri-lobe cams}	F01B9/06	F01B9/06		68
F01B2009/068	11	{Quadri-lobe cams}	F01B9/06	F01B9/06		38
F01B9/08	9	with ratchet and pawl	F01B9/08	F01B9/08		128
F01B11/00	7	Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type	F01B11/00	F01B11/00		225
F01B11/001	8	{in which the movement in the two directions is obtained by one double acting piston motor}	F01B11/00	F01B11/00		138
F01B11/002	9	{one side of the double acting piston motor being always under the influence of the fluid under pressure}	F01B11/00	F01B11/00		19
F01B11/003	10	{the fluid under pressure being continuously delivered to one motor chamber and reacting the other chamber through a valve located in the piston, to bring the piston back in its start-position}	F01B11/00	F01B11/00		12
F01B11/004	8	{in which the movement in the two directions is obtained by two single acting piston motors, each acting in one direction}	F01B11/00	F01B11/00		60
F01B2011/005	9	{with oscillating pistons, i.e. the pistons are arranged in ring like cylinder sections and oscillate with respect to the center of the ring}	F01B11/00	F01B11/00		48
F01B11/006	9	{one single acting piston motor being always under the influence of the fluid under pressure}	F01B11/00	F01B11/00		11
F01B11/007	8	{in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means}	F01B11/00	F01B11/00		101
F01B11/008	9	{with actuation in the other direction by gravity}	F01B11/00	F01B11/00		11
F01B11/009	8	{in which the movement in two directions is obtained by two or more double acting piston motors}	F01B11/00	F01B11/00		19
F01B11/02	8	Equalising or cushioning devices	F01B11/02	F01B11/02		139
F01B11/04	8	Engines combined with reciprocatory driven devices, e.g. hammers	F01B11/04	F01B11/04		90
F01B11/06	9	for generating vibration only	F01B11/06	F01B11/06		36
F01B11/08	8	with direct fluid transmission link	F01B11/08	F01B11/08		115
F01B13/00	7	Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion	F01B13/00	F01B13/00		37
F01B13/02	8	with one cylinder only	F01B13/02	F01B13/02		158
F01B13/04	8	with more than one cylinder	F01B13/04	F01B13/04		96
F01B13/045	9	{with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis}	F01B13/04	F01B13/04		215
F01B13/06	9	in star arrangement	F01B13/06	F01B13/06		134
F01B13/061	10	{the connection of the pistons with the actuated or actuating element being at the outer ends of the cylinders}	F01B13/06	F01B13/06		441
F01B13/062	11	{cylinder block and actuating or actuated cam both rotating}	F01B13/06	F01B13/06		203
F01B13/063	11	{with two or more series radial piston-cylinder units}	F01B13/06	F01B13/06		12
F01B13/064	12	{cylinder block and actuating or actuated cam both rotating (F01B13/066 takes precedence)}	F01B13/06	F01B13/06		8
F01B13/065	12	{directly located side by side}	F01B13/06	F01B13/06		116
F01B13/066	13	{cylinder block and actuating or actuated cam both rotating}	F01B13/06	F01B13/06		39
F01B13/067	11	{with pistons and cylinders having two different parallel axis of rotation}	F01B13/06	F01B13/06		14
F01B13/068	10	{the connection of the pistons with an actuated or actuating element being at the inner ends of the cylinders}	F01B13/06	F01B13/06		423
F01B15/00	7	Reciprocating-piston machines or engines with movable cylinders other than provided for in group F01B13/00	F01B15/00	F01B15/00		43
F01B15/002	8	{having cylinders in star or fan arrangement, the connection of the pistons with the actuated or actuating element being at the outer ends of the cylinders}	F01B15/00	F01B15/00		35
F01B15/005	8	{having cylinders in star or fan arrangement, the connection of the pistons with the actuated or actuating element being at the inner ends of the cylinders}	F01B15/00	F01B15/00		40
F01B15/007	8	{having spinning cylinders, i.e. the cylinders rotating about their longitudinal axis}	F01B15/00	F01B15/00		55
F01B15/02	8	with reciprocating cylinders (with one piston within another F01B7/20)	F01B15/02	F01B15/02		91
F01B15/04	8	with oscillating cylinder	F01B15/04	F01B15/04		206
F01B15/06	9	Control of working-fluid admission or discharge peculiar thereto	F01B15/06	F01B15/06		12
F01B15/065	10	{by cam-actuated distribution members}	F01B15/06	F01B15/06		10
F01B17/00	7	Reciprocating-piston machines or engines characterised by use of uniflow principle	F01B17/00	F01B17/00		1308
F01B17/02	8	Engines	F01B17/02	F01B17/02		1489
F01B17/022	9	{with fluid heating}	F01B17/02	F01B17/02		43
F01B17/025	9	{using liquid air}	F01B17/02	F01B17/02		74
F01B17/027	9	{using separators}	F01B17/02	F01B17/02		10
F01B17/04	9	Steam engines<br><br><u>NOTE</u><br><br><br>In this group the following indexing codes are used: F01B2170/0411 - F01B2170/0494	F01B17/04	F01B17/04		2119
F01B19/00	7	Positive-displacement machines or engines of flexible-wall type	F01B19/00	F01B19/00		107
F01B19/02	8	with plate-like flexible members	F01B19/02	F01B19/02		110
F01B19/04	8	with tubular flexible members	F01B19/04	F01B19/04		75
F01B21/00	7	Combinations of two or more machines or engines (F01B23/00 takes precedence)	F01B21/00	F01B21/00		116
F01B21/02	8	the machines or engines being all of reciprocating-piston type	F01B21/02	F01B21/02		99
F01B21/04	8	the machines or engines being not all of reciprocating-piston type, e.g. of reciprocating steam engine with steam turbine	F01B21/04	F01B21/04		51
F01B23/00	7	Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby	F01B23/00	F01B23/00		100
F01B23/02	8	Adaptations for driving vehicles, e.g. locomotives	F01B23/02	F01B23/02		92
F01B23/04	9	the vehicles being waterborne vessels	F01B23/04	F01B23/04		8
F01B23/06	8	Adaptations for driving, or combinations with, hand-held tools or the like	F01B23/06	F01B23/06		47
F01B23/08	8	Adaptations for driving, or combinations with, pumps	F01B23/08	F01B23/08		180
F01B23/10	8	Adaptations for driving, or combinations with, electric generators	F01B23/10	F01B23/10		495
F01B23/12	8	Adaptations for driving rolling mills or other heavy reversing machinery	F01B23/12	F01B23/12		3
F01B25/00	7	Regulating, controlling or safety means (controlling combustion engines F02D)<br><br><u>NOTE</u><br><br><br>In this group the following indexing codes are used: F01B2250/001 - F01B2250/009	F01B25/00	F01B25/00		1617
F01B25/02	8	Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity	F01B25/02	F01B25/02		194
F01B25/04	9	Sensing elements	F01B25/04	F01B25/04		19
F01B25/06	10	responsive to speed	F01B25/06	F01B25/06		40
F01B25/08	9	Final actuators	F01B25/08	F01B25/08		38
F01B25/10	10	Arrangements or adaptations of working-fluid admission or discharge valves	F01B25/10	F01B25/10		137
F01B25/12	9	Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted	F01B25/12	F01B25/12		17
F01B25/14	9	peculiar to particular kinds of machines or engines	F01B25/14	F01B25/14		54
F01B25/16	8	Safety means responsive to specific conditions (against water hammer or the like in steam engines F01B31/34)	F01B25/16	F01B25/16		17
F01B25/18	9	preventing rotation in wrong direction	F01B25/18	F01B25/18		3
F01B25/20	8	Checking operation on safety devices	F01B25/20	F01B25/20		1
F01B25/22	8	Braking by redirecting working-fluid	F01B25/22	F01B25/22		4
F01B25/24	9	thereby regenerating energy	F01B25/24	F01B25/24		4
F01B25/26	8	Warning devices	F01B25/26	F01B25/26		21
F01B27/00	7	Starting of machines or engines (starting combustion engines F02N)	F01B27/00	F01B27/00		10
F01B27/02	8	of reciprocating-piston engines	F01B27/02	F01B27/02		23
F01B27/04	9	by directing working-fluid supply, e.g. by aid of by-pass steam conduits	F01B27/04	F01B27/04		11
F01B27/06	10	specially for compound engines	F01B27/06	F01B27/06		26
F01B27/08	9	Means for moving crank off dead-centre	F01B27/08	F01B27/08		23
F01B29/00	7	Machines or engines with pertinent characteristics other than those provided for in preceding main groups	F01B29/00	F01B29/00		74
F01B29/02	8	Atmospheric engines, i.e. atmosphere acting against vacuum	F01B29/02	F01B29/02		81
F01B29/04	8	characterised by means for converting from one type to a different one	F01B29/04	F01B29/04		67
F01B29/06	9	from steam engine into combustion engine	F01B29/06	F01B29/06		13
F01B29/08	8	Reciprocating-piston machines or engines not otherwise provided for	F01B29/08	F01B29/08		63
F01B29/10	9	Engines	F01B29/10	F01B29/10		171
F01B29/12	10	Steam engines (toy steam engines A63H29/16)	F01B29/12	F01B29/12		192
F01B31/00	7	Component parts, details or accessories not provided for in, or of interest apart from, other groups	F01B31/00	F01B31/00		159
F01B31/005	8	{Silencing equipment (F01B31/16 takes precedence)}	F01B31/00	F01B31/00		26
F01B31/02	8	De-icing means for engines having icing phenomena	F01B31/02	F01B31/02		38
F01B31/04	8	Means for equalising torque in reciprocating-piston machines or engines	F01B31/04	F01B31/04		12
F01B31/06	8	Means for compensating relative expansion of component parts	F01B31/06	F01B31/06		8
F01B31/08	8	Cooling of steam engines; Heating; Heat insulation	F01B31/08	F01B31/08		123
F01B31/10	8	Lubricating arrangements of steam engines	F01B31/10	F01B31/10		129
F01B31/12	8	Arrangements of measuring or indicating devices	F01B31/12	F01B31/12		48
F01B31/14	8	Changing of compression ratio	F01B31/14	F01B31/14		179
F01B31/16	8	Silencers specially adapted for steam engines	F01B31/16	F01B31/16		47
F01B31/18	8	Draining	F01B31/18	F01B31/18		9
F01B31/20	9	of cylinders	F01B31/20	F01B31/20		3
F01B31/22	8	Idling devices, e.g. having by-passing valves	F01B31/22	F01B31/22		19
F01B31/24	9	Disengagement of connections between pistons and main shafts	F01B31/24	F01B31/24		13
F01B31/26	8	Other component parts, details, or accessories, peculiar to steam engines	F01B31/26	F01B31/26		73
F01B31/28	9	Cylinders or cylinder covers	F01B31/28	F01B31/28		47
F01B31/30	9	Arrangements of steam conduits	F01B31/30	F01B31/30		10
F01B31/32	9	Arrangements or adaptations of vacuum breakers	F01B31/32	F01B31/32		
F01B31/34	9	Safety means against water hammer or against the penetration of water	F01B31/34	F01B31/34		2
F01B31/36	10	automatically cutting-off steam supply	F01B31/36	F01B31/36		1
F01B2170/00	7	Steam engines, e.g. for locomotives or ships	CPCONLY	F01B2170/00		1
F01B2170/04	8	To-be-deleted with administrative transfer to parent group	CPCONLY	F01B2170/04		1
F01B2170/0405	9	To-be-deleted with administrative transfer to parent group	CPCONLY	F01B2170/0405		
F01B2170/0411	10	for locomotives	CPCONLY	F01B2170/0411		202
F01B2170/0417	10	for locomobiles driven by small motors	CPCONLY	F01B2170/0417		48
F01B2170/0423	10	Single acting steam engines with 1, 2 or 3 cylinders	CPCONLY	F01B2170/0423		112
F01B2170/0429	10	Double acting high pressure machines	CPCONLY	F01B2170/0429		50
F01B2170/0435	10	Compound machines with double or plural expansion; Auxiliaries driven by main engine	CPCONLY	F01B2170/0435		142
F01B2170/0441	10	Compound engines with monolytic pistons in same cylinder	CPCONLY	F01B2170/0441		26
F01B2170/0447	10	Machines with more than one piston in a cylinder and with counter moving pistons	CPCONLY	F01B2170/0447		56
F01B2170/0452	10	Engines without connecting rods	CPCONLY	F01B2170/0452		45
F01B2170/0458	10	Moving cylinders for steam engines, e.g. with telescopic cylinder arrangements	CPCONLY	F01B2170/0458		20
F01B2170/0464	10	Oscillating cylinders for steam engines	CPCONLY	F01B2170/0464		26
F01B2170/047	10	General arrangements for steam engines	CPCONLY	F01B2170/047		25
F01B2170/0476	10	Components or parts for steam engines	CPCONLY	F01B2170/0476		155
F01B2170/0482	10	with toroidal cylinder space	CPCONLY	F01B2170/0482		
F01B2170/0488	11	To-be-deleted with administrative transfer to parent group	CPCONLY	F01B2170/0488		
F01B2170/0494	12	with fixed cylinder space	CPCONLY	F01B2170/0494		41
F01B2250/00	7	Accessories of steam engines; Arrangements or control devices of piston pumps, compressors without crank shafts or condensors for so far as they influence the functioning of the engines	CPCONLY	F01B2250/00		
F01B2250/001	8	Valves for steam inlet or outlet	CPCONLY	F01B2250/001		171
F01B2250/002	8	Valves, brakes, control or safety devices for steam engines	CPCONLY	F01B2250/002		274
F01B2250/003	8	Apparatus for control or receiver or condensor pressure	CPCONLY	F01B2250/003		15
F01B2250/004	8	Devices for draining or idling of steam cylinders or for uncoupling piston and connecting rod	CPCONLY	F01B2250/004		265
F01B2250/005	8	Oil separators for steam engines	CPCONLY	F01B2250/005		26
F01B2250/006	8	Arrangement of or controlling of piston pumps or compressors without crank shaft	CPCONLY	F01B2250/006		13
F01B2250/007	8	Condensing devices for steam engines	CPCONLY	F01B2250/007		225
F01B2250/008	8	Surface condensors for so far as they influence the functioning of the engine	CPCONLY	F01B2250/008		22
F01B2250/009	8	Condenser pumps for steam engines	CPCONLY	F01B2250/009		204
