F01C1/00	7	Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00)<br><br><u>NOTE</u><br><br>Group F01C1/30 takes precedence over groups F01C1/02&#160;-&#160;F01C1/28.	F01C1/00	F01C1/00		173
F01C1/02	8	of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents	F01C1/02	F01C1/02		115
F01C1/0207	9	{both members having co-operating elements in spiral form}	F01C1/02	F01C1/02		37
F01C1/0215	10	{where only one member is moving}	F01C1/02	F01C1/02		326
F01C1/0223	11	{with symmetrical double wraps}	F01C1/02	F01C1/02		86
F01C1/023	10	{where both members are moving}	F01C1/02	F01C1/02		47
F01C1/0238	11	{with symmetrical double wraps}	F01C1/02	F01C1/02		13
F01C1/0246	10	{Details concerning the involute wraps or their base, e.g. geometry}	F01C1/02	F01C1/02		168
F01C1/0253	11	{Details concerning the base}	F01C1/02	F01C1/02		24
F01C1/0261	12	{Details of the ports, e.g. location, number, geometry}	F01C1/02	F01C1/02		10
F01C1/0269	11	{Details concerning the involute wraps}	F01C1/02	F01C1/02		21
F01C1/0276	12	{Different wall heights}	F01C1/02	F01C1/02		8
F01C1/0284	12	{Details of the wrap tips}	F01C1/02	F01C1/02		4
F01C1/0292	12	{Ports or channels located in the wrap}	F01C1/02	F01C1/02		2
F01C1/04	9	of internal-axis type	F01C1/04	F01C1/04		167
F01C1/045	10	{having a C-shaped piston}	F01C1/04	F01C1/04		75
F01C1/06	9	of other than internal-axis type (F01C1/063 takes precedence)	F01C1/06	F01C1/06		67
F01C1/063	9	with coaxially-mounted members having continuously-changing circumferential spacing between them	F01C1/063	F01C1/063		673
F01C1/067	10	having cam-and-follower type drive	F01C1/067	F01C1/067		161
F01C1/07	10	having crankshaft-and-connecting-rod type drive	F01C1/07	F01C1/07		503
F01C1/073	10	having pawl-and-ratchet type drive	F01C1/073	F01C1/073		201
F01C1/077	10	having toothed-gearing type drive	F01C1/077	F01C1/077		380
F01C1/08	8	of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing	F01C1/08	F01C1/08		48
F01C1/082	9	{Details specially related to intermeshing engagement type machines or engines}	F01C1/08	F01C1/08		32
F01C1/084	10	{Toothed wheels}	F01C1/08	F01C1/08		402
F01C1/086	10	{Carter}	F01C1/08	F01C1/08		56
F01C1/088	10	{Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement}	F01C1/08	F01C1/08		17
F01C1/10	9	of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member	F01C1/10	F01C1/10		147
F01C1/101	10	{Moineau-type}	F01C1/10	F01C1/10		85
F01C1/102	10	{with a crescent shaped filler element located between the intermeshing elements}	F01C1/10	F01C1/10		56
F01C1/103	10	{the two members rotating simultaneously around their respective axes}	F01C1/10	F01C1/10		201
F01C1/104	10	{one member having simultaneously a rotational movement about its own axis and an orbital movement}	F01C1/10	F01C1/10		239
F01C1/105	11	{and having an articulated driving shaft}	F01C1/10	F01C1/10		7
F01C1/107	10	with helical teeth	F01C1/107	F01C1/107		141
F01C1/113	10	the inner member carrying rollers intermeshing with the outer member	F01C1/113	F01C1/113		28
F01C1/12	9	of other than internal-axis type	F01C1/12	F01C1/12		48
F01C1/123	10	{with tooth-like elements, extending generally radially from the rotor body cooperating with recesses in the other rotor, e.g. one tooth}	F01C1/12	F01C1/12		203
F01C1/126	10	{with elements extending radially from the rotor body not necessarily cooperating with corresponding recesses in the other rotor, e.g. lobes, Roots type}	F01C1/12	F01C1/12		230
F01C1/14	10	with toothed rotary pistons	F01C1/14	F01C1/14		69
F01C1/16	11	with helical teeth, e.g. chevron-shaped, screw type {(for non-parallel axes of movement F01C3/00)}	F01C1/16	F01C1/16		440
F01C1/165	12	{having more than two rotary pistons with parallel axes}	F01C1/16	F01C1/16		32
F01C1/18	11	with similar tooth forms (F01C1/16 takes precedence)	F01C1/18	F01C1/18		238
F01C1/20	11	with dissimilar tooth forms (F01C1/16 takes precedence)	F01C1/20	F01C1/20		731
F01C1/22	8	of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth- equivalents than the outer member	F01C1/22	F01C1/22		947
F01C1/24	8	of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions	F01C1/24	F01C1/24		47
F01C1/26	9	of internal-axis type	F01C1/26	F01C1/26		21
F01C1/28	9	of other than internal-axis type	F01C1/28	F01C1/28		115
F01C1/30	8	having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members	F01C1/30	F01C1/30		49
F01C1/32	9	having both the movement defined in group F01C1/02 and relative reciprocation between the co-operating members	F01C1/32	F01C1/32		157
F01C1/321	10	{with vanes hinged to the inner member and reciprocating with respect to the inner member}	F01C1/32	F01C1/32		25
F01C1/322	10	{with vanes hinged to the outer member and reciprocating with respect to the outer member}	F01C1/32	F01C1/32		38
F01C1/324	10	with vanes hinged to the inner member and reciprocating with respect to the outer member	F01C1/324	F01C1/324		56
F01C1/328	11	and hinged to the outer member	F01C1/328	F01C1/328		35
F01C1/332	10	with vanes hinged to the outer member and reciprocating with respect to the inner member	F01C1/332	F01C1/332		33
F01C1/336	11	and hinged to the inner member	F01C1/336	F01C1/336		34
F01C1/34	9	having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members	F01C1/34	F01C1/34		170
F01C1/344	10	with vanes reciprocating with respect to the inner member	F01C1/344	F01C1/344		839
F01C1/3441	11	{the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation}	F01C1/344	F01C1/344		361
F01C1/3442	12	{the surfaces of the inner and outer member, forming the working space, being surfaces of revolution}	F01C1/344	F01C1/344		543
F01C1/3443	12	{with a separation element located between the inlet and outlet opening}	F01C1/344	F01C1/344		19
F01C1/3445	12	{the vanes having the form of rollers, slippers or the like}	F01C1/344	F01C1/344		71
F01C1/3446	11	{the inner and outer member being in contact along more than one line or surface}	F01C1/344	F01C1/344		692
F01C1/3447	12	{the vanes having the form of rollers, slippers or the like}	F01C1/344	F01C1/344		28
F01C1/3448	11	{with axially movable vanes}	F01C1/344	F01C1/344		259
F01C1/348	11	the vanes positively engaging, with circumferential play, an outer rotatable member	F01C1/348	F01C1/348		87
F01C1/352	11	the vanes being pivoted on the axis of the outer member	F01C1/352	F01C1/352		177
F01C1/356	10	with vanes reciprocating with respect to the outer member	F01C1/356	F01C1/356		229
F01C1/3562	11	{the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation}	F01C1/356	F01C1/356		265
F01C1/3564	12	{the surfaces of the inner and outer member, forming the working space, being surfaces of revolution}	F01C1/356	F01C1/356		153
F01C1/3566	11	{the inner and outer member being in contact along more than one line or surface}	F01C1/356	F01C1/356		301
F01C1/3568	11	{with axially movable vanes}	F01C1/356	F01C1/356		101
F01C1/36	9	having both the movements defined in sub-groups F01C1/22 and F01C1/24	F01C1/36	F01C1/36		204
F01C1/38	9	having the movement defined in group F01C1/02 and having a hinged member (F01C1/32 takes precedence)	F01C1/38	F01C1/38		18
F01C1/39	10	with vanes hinged to the inner as well as to the outer member	F01C1/39	F01C1/39		70
F01C1/40	9	having the movement defined in group F01C1/08 or F01C1/22 and having a hinged member	F01C1/40	F01C1/40		88
F01C1/44	10	with vanes hinged to the inner member	F01C1/44	F01C1/44		768
F01C1/46	10	with vanes hinged to the outer member	F01C1/46	F01C1/46		528
F01C3/00	7	Rotary-piston machines or engines with non-parallel axes of movement of co-operating members (with the working-chamber walls being at least partly resiliently deformable F01C5/00)	F01C3/00	F01C3/00		24
F01C3/02	8	the axes being arranged at an angle of 90 degrees	F01C3/02	F01C3/02		312
F01C3/025	9	{of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing}	F01C3/02	F01C3/02		163
F01C3/04	9	with axially sliding vanes	F01C3/04	F01C3/04		40
F01C3/06	8	the axes being arranged otherwise than at an angle of 90 degrees	F01C3/06	F01C3/06		227
F01C3/08	9	of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing	F01C3/08	F01C3/08		31
F01C3/085	10	{the axes of cooperating members being on the same plane}	F01C3/08	F01C3/08		44
F01C5/00	7	Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable	F01C5/00	F01C5/00		23
F01C5/02	8	the resiliently-deformable wall being part of the inner member, e.g. of a rotary piston	F01C5/02	F01C5/02		51
F01C5/04	8	the resiliently-deformable wall being part of the outer member, e.g. of a housing	F01C5/04	F01C5/04		23
F01C5/06	8	the resiliently-deformable wall being a separate member	F01C5/06	F01C5/06		17
F01C5/08	9	of tubular form, e.g. hose	F01C5/08	F01C5/08		16
F01C7/00	7	Rotary-piston machines or engines with fluid ring or the like	F01C7/00	F01C7/00		54
F01C9/00	7	Oscillating-piston machines or engines	F01C9/00	F01C9/00		109
F01C9/002	8	{the piston oscillating around a fixed axis}	F01C9/00	F01C9/00		527
F01C9/005	8	{the piston oscillating in the space, e.g. around a fixed point (rotary piston machines or engines with non-parallel axes of rotation between co-operating members F01C3/00)}	F01C9/00	F01C9/00		345
F01C9/007	8	{the points of the moving element describing approximately an alternating movement in axial direction with respect to the other element}	F01C9/00	F01C9/00		49
F01C11/00	7	Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type (F01C13/00 takes precedence; combinations of two or more pumps F04; fluid gearing F16H)	F01C11/00	F01C11/00		174
F01C11/002	8	{of similar working principle}	F01C11/00	F01C11/00		467
F01C11/004	9	{and of complementary function, e.g. internal combustion engine with supercharger}	F01C11/00	F01C11/00		726
F01C11/006	8	{of dissimilar working principle}	F01C11/00	F01C11/00		86
F01C11/008	9	{and of complementary function, e.g. internal combustion engine with supercharger}<br><br><u>NOTE</u><br><br>Multi-stage steam engines or similar machines are not considered as having complementary function	F01C11/00	F01C11/00		260
F01C13/00	7	Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby	F01C13/00	F01C13/00		307
F01C13/02	8	for driving hand-held tools or the like	F01C13/02	F01C13/02		121
F01C13/04	8	for driving pumps or compressors	F01C13/04	F01C13/04		161
F01C17/00	7	Arrangements for drive of co-operating members, e.g. for rotary piston and casing	F01C17/00	F01C17/00		71
F01C17/02	8	of toothed-gearing type (F01C1/077 takes precedence)	F01C17/02	F01C17/02		299
F01C17/04	8	of cam-and-follower type (F01C1/067 takes precedence)	F01C17/04	F01C17/04		30
F01C17/06	8	using cranks, universal joints or similar elements (F01C1/07 takes precedence)	F01C17/06	F01C17/06		438
F01C17/063	9	{with only rolling movement}	F01C17/06	F01C17/06		235
F01C17/066	9	{with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling}	F01C17/06	F01C17/06		574
F01C19/00	7	Sealing arrangements in rotary-piston machines or engines (sealings in general F16J)	F01C19/00	F01C19/00		178
F01C19/005	8	{Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements (vane construction F01C21/0809; piston rings and ring sealings of similar construction in general F16J9/00)}	F01C19/00	F01C19/00		451
F01C19/02	8	Radially-movable sealings for working fluids	F01C19/02	F01C19/02		284
F01C19/025	9	{Radial sealing elements specially adapted for intermeshing engagement type machines or engines, e.g. gear machines or engines}	F01C19/02	F01C19/02		49
F01C19/04	9	of rigid material	F01C19/04	F01C19/04		476
F01C19/06	9	of resilient material	F01C19/06	F01C19/06		43
F01C19/08	8	Axially-movable sealings for working fluids	F01C19/08	F01C19/08		563
F01C19/085	9	{Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or engines, e.g. gear machines or engines}	F01C19/08	F01C19/08		54
F01C19/10	8	Sealings for working fluids between radially and axially movable parts	F01C19/10	F01C19/10		593
F01C19/12	8	for other than working fluid	F01C19/12	F01C19/12		112
F01C19/125	9	{Shaft sealings specially adapted for rotary or oscillating-piston machines or engines}	F01C19/12	F01C19/12		71
F01C20/00	7	Control of, monitoring of, or safety arrangements for, machines or engines	F01C20/00	F01C20/00		84
F01C20/02	8	specially adapted for several machines or engines connected in series or in parallel	F01C20/02	F01C20/02		45
F01C20/04	8	specially adapted for reversible machines or engines	F01C20/04	F01C20/04		104
F01C20/06	8	specially adapted for stopping, starting, idling or no-load operation	F01C20/06	F01C20/06		57
F01C20/08	8	characterised by varying the rotational speed	F01C20/08	F01C20/08		62
F01C20/10	8	characterised by changing the positions of the inlet or outlet openings with respect to the working chamber	F01C20/10	F01C20/10		34
F01C20/12	9	using sliding valves	F01C20/12	F01C20/12		39
F01C20/125	10	{with sliding valves controlled by the use of fluid other than the working fluid}	F01C20/12	F01C20/12		4
F01C20/14	9	using rotating valves	F01C20/14	F01C20/14		105
F01C20/16	9	using lift valves	F01C20/16	F01C20/16		33
F01C20/18	8	characterised by varying the volume of the working chamber (by changing the positions of inlet or outlet openings F01C20/10)	F01C20/18	F01C20/18		62
F01C20/185	9	{by varying the useful pumping length of the cooperating members in the axial direction}	F01C20/18	F01C20/18		17
F01C20/20	9	by changing the form of the inner or outlet contour of the working chamber	F01C20/20	F01C20/20		46
F01C20/22	9	by changing the eccentricity between cooperating members	F01C20/22	F01C20/22		53
F01C20/24	8	characterised by using valves for controlling pressure or flow rate, e.g. discharge valves (F01C20/10 takes precedence)	F01C20/24	F01C20/24		106
F01C20/26	9	using bypass channels	F01C20/26	F01C20/26		38
F01C20/265	10	{being obtained by displacing a lateral sealing face}	F01C20/26	F01C20/26		5
F01C20/28	8	Safety arrangements; Monitoring	F01C20/28	F01C20/28		71
F01C21/00	7	Component parts, details or accessories not provided for in groups F01C1/00&#160;-&#160;F01C20/00	F01C21/00	F01C21/00		130
F01C21/001	8	{Injection of a fluid in the working chamber for sealing, cooling and lubricating (sealing only F01C17/00; lubrication only F01C21/04; cooling only F01C21/06; injecting water or steam in internal combustion engines F02B47/02, F02D21/00, F02M25/00)}	F01C21/00	F01C21/00		37
F01C21/002	9	{with control systems for the injection of the fluid}	F01C21/00	F01C21/00		9
F01C21/003	8	{Systems for the equilibration of forces acting on the elements of the machine (interstice adjustment other than by fluid pressure F01C21/102)}	F01C21/00	F01C21/00		149
F01C21/005	9	{Internal leakage control}	F01C21/00	F01C21/00		9
F01C21/006	9	{Equalization of pressure pulses (silencing for compressors F04C29/06)}	F01C21/00	F01C21/00		33
F01C21/007	8	{General arrangements of parts; Frames and supporting elements}	F01C21/00	F01C21/00		388
F01C21/008	8	{Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per seF16, B60)}	F01C21/00	F01C21/00		373
F01C21/02	8	Arrangements of bearings (bearing constructions F16C)	F01C21/02	F01C21/02		759
F01C21/04	8	Lubrication (of machines or engines in general F01M)	F01C21/04	F01C21/04		323
F01C21/045	9	{Control systems for the circulation of the lubricant}	F01C21/04	F01C21/04		29
F01C21/06	8	Heating; Cooling (of machines or engines in general F01P); Heat insulation (heat insulation in general F16L)	F01C21/06	F01C21/06		458
F01C21/08	8	Rotary pistons (reciprocating pistons in general F16J)	F01C21/08	F01C21/08		1079
F01C21/0809	9	{Construction of vanes or vane holders}	F01C21/08	F01C21/08		1428
F01C21/0818	10	{Vane tracking; control therefor}	F01C21/08	F01C21/08		157
F01C21/0827	11	{by mechanical means}	F01C21/08	F01C21/08		110
F01C21/0836	12	{comprising guiding means, e.g. cams, rollers}	F01C21/08	F01C21/08		911
F01C21/0845	12	{comprising elastic means, e.g. springs}	F01C21/08	F01C21/08		439
F01C21/0854	11	{by fluid means}	F01C21/08	F01C21/08		46
F01C21/0863	12	{the fluid being the working fluid}	F01C21/08	F01C21/08		700
F01C21/0872	12	{the fluid being other than the working fluid}	F01C21/08	F01C21/08		123
F01C21/0881	10	{the vanes consisting of two or more parts}	F01C21/08	F01C21/08		386
F01C21/089	10	{for synchronised movement of the vanes}	F01C21/08	F01C21/08		169
F01C21/10	8	Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M)	F01C21/10	F01C21/10		1271
F01C21/102	9	{Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure}	F01C21/10	F01C21/10		301
F01C21/104	9	{Stators; Members defining the outer boundaries of the working chamber}	F01C21/10	F01C21/10		443
F01C21/106	10	{with a radial surface, e.g. cam rings}	F01C21/10	F01C21/10		579
F01C21/108	10	{with an axial surface, e.g. side plates}	F01C21/10	F01C21/10		611
F01C2021/12	8	{Control of working fluid admission or discharge}	F01C21/00	F01C21/12		18
F01C2021/125	9	{Arrangements for supercharging the working space}	F01C21/00	F01C21/12		2
F01C2021/14	9	{for variable fluid distribution}	F01C21/00	F01C21/14		
F01C2021/16	8	{Other regulation or control}	F01C21/00	F01C21/16		6
F01C2021/1606	9	{Variation of the working chamber}	F01C21/00	F01C21/16		2
F01C2021/1612	10	{by changing the eccentricity of an element with respect to another element}	F01C21/00	F01C21/16		
F01C2021/1618	10	{by changing the positions of the inlet and outlet openings with respect to the working chambers}	F01C21/00	F01C21/16		1
F01C2021/1625	11	{with sliding or rotating valves, adjustable in position}	F01C21/00	F01C21/16		1
F01C2021/1631	12	{with sliding valves controlled by the use of fluid other than the working fluid}	F01C21/00	F01C21/16		
F01C2021/1637	10	{by changing the form of the radially inner or the radially outer contour of the working chamber}	F01C21/00	F01C21/16		
F01C2021/1643	9	{by using valves regulating pressure and flow rate, e.g. discharge valves}	F01C21/00	F01C21/16		8
F01C2021/165	10	{using a by-pass channel}	F01C21/00	F01C21/16		5
F01C2021/1656	11	{being obtained by displacing a lateral sealing face}	F01C21/00	F01C21/16		
F01C2021/1662	10	{with venting means}	F01C21/00	F01C21/16		
F01C2021/1668	9	{with several machines or engines connected in series or in parallel}	F01C21/00	F01C21/16		1
F01C2021/1675	9	{with reversible machines or engines}	F01C21/00	F01C21/16		3
F01C2021/1681	9	{by varying the rotational speed}	F01C21/00	F01C21/16		2
F01C2021/1687	9	{Safety arrangements}	F01C21/00	F01C21/16		2
F01C2021/1693	9	{Stopping or starting, idling or no-load operation}	F01C21/00	F01C21/16		2
F01C21/18	8	Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet	F01C21/18	F01C21/18		727
F01C21/183	9	{Arrangements for supercharging the working space (similar arrangements for internal combustion engines F02B33/00, F02B27/00)}	F01C21/18	F01C21/18		35
F01C21/186	9	{for variable fluid distribution}	F01C21/18	F01C21/18		103
