F03C1/00	7	Reciprocating-piston liquid engines	F03C1/00	F03C1/00		148
F03C1/001	8	{the movement in two directions being obtained by two or more double-acting piston liquid motors}	F03C1/00	F03C1/00		41
F03C1/002	8	{details; components parts}	F03C1/00	F03C1/00		150
F03C1/003	8	{controlling}	F03C1/00	F03C1/00		78
F03C1/004	9	{speed-control}	F03C1/00	F03C1/00		41
F03C1/005	9	{motor piston stroke control}	F03C1/00	F03C1/00		25
F03C1/007	8	with single cylinder, double-acting piston	F03C1/007	F03C1/007		126
F03C1/0073	9	{one side of the double-acting piston being always under the influence of the liquid under pressure}	F03C1/007	F03C1/007		71
F03C1/0076	10	{the liquid under pressure being continuously delivered to one cylinder chamber through a valve in the piston for actuating the return stroke}	F03C1/007	F03C1/007		52
F03C1/013	8	with single cylinder, single-acting piston	F03C1/013	F03C1/013		66
F03C1/0135	9	{with actuation of the return stroke by gravity}	F03C1/013	F03C1/013		13
F03C1/02	8	with multiple-cylinders, characterised by the number or arrangement of cylinders (with movable cylinders F03C1/22; of flexible-wall type F03C7/00)	F03C1/02	F03C1/02		153
F03C1/03	9	with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction	F03C1/03	F03C1/03		45
F03C1/035	10	{one single-acting piston being always under the influence of the liquid under pressure}	F03C1/03	F03C1/03		42
F03C1/04	9	with cylinders in star or fan arrangement {(F03C1/22 takes precedence)}	F03C1/04	F03C1/04		55
F03C1/0403	10	{Details, component parts specially adapted of such engines}	F03C1/04	F03C1/04		103
F03C1/0406	11	{Pistons}	F03C1/28	F03C1/04		163
F03C1/0409	11	{Cams}	F03C1/30	F03C1/04		144
F03C1/0412	12	{consisting of several cylindrical elements, e.g. rollers}	F03C1/30	F03C1/04		28
F03C1/0415	11	{Cylinders}	F03C1/32	F03C1/04		62
F03C1/0419	11	{Arrangements for pressing or connecting the pistons against the actuated cam}	F03C1/04	F03C1/04		42
F03C1/0422	12	{hydraulically}	F03C1/04	F03C1/04		6
F03C1/0425	11	{Disconnecting the pistons from the actuated cam (in general F01B31/24)}	F03C1/04	F03C1/04		44
F03C1/0428	11	{Supporting and guiding means for the pistons}	F03C1/04	F03C1/04		88
F03C1/0431	11	{Draining of the engine housing; arrangements dealing with leakage fluid}	F03C1/04	F03C1/04		40
F03C1/0435	11	{Particularities relating to the distribution members (F03C1/0472, F03C1/0531, and F03C1/0538 take precedence)}	F03C1/34	F03C1/04		121
F03C1/0438	12	{to cylindrical distribution members}	F03C1/36	F03C1/04		300
F03C1/0441	12	{to conical distribution members}	F03C1/34	F03C1/04		24
F03C1/0444	12	{to plate-like distribution members}	F03C1/38	F03C1/04		241
F03C1/0447	10	{Controlling}	F03C1/40	F03C1/04		110
F03C1/045	11	{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}	F03C1/40	F03C1/04		135
F03C1/0454	11	{by changing the effective cross sectional piston working surface}	F03C1/40	F03C1/04		11
F03C1/0457	11	{by changing the effective piston stroke}	F03C1/40	F03C1/04		9
F03C1/046	12	{by changing the excentricity of one element relative to another element}	F03C1/40	F03C1/04		46
F03C1/0463	11	{by changing the phase relationship between two actuated cams}	F03C1/40	F03C1/04		3
F03C1/0466	11	{by changing the phase relationship between the actuated cam and the distributing means}	F03C1/40	F03C1/04		25
F03C1/047	10	the pistons co-operating with an actuated element at the outer ends of the cylinders	F03C1/047	F03C1/047		173
F03C1/0472	11	{with cam-actuated distribution members}	F03C1/047	F03C1/047		43
F03C1/0474	11	{with two or more radial piston/cylinder units in series}	F03C1/047	F03C1/047		15
F03C1/0476	12	{directly located side by side}	F03C1/047	F03C1/047		34
F03C1/0478	12	{having several cylinder barrels coupled together}	F03C1/047	F03C1/047		4
F03C1/053	10	the pistons co-operating with an actuated element at the inner ends of the cylinders	F03C1/053	F03C1/053		118
F03C1/0531	11	{with cam-actuated distribution members}	F03C1/053	F03C1/053		69
F03C1/0533	12	{each piston being provided with channels coacting with the cylinder and being used as a distribution member for another cylinder}	F03C1/053	F03C1/053		3
F03C1/0535	11	{with two or more radial piston/cylinder units in series}	F03C1/053	F03C1/053		9
F03C1/0536	12	{directly located side by side}	F03C1/053	F03C1/053		27
F03C1/0538	11	{the piston-driven cams being provided with inlets or outlets}	F03C1/053	F03C1/053		16
F03C1/06	9	with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis	F03C1/06	F03C1/06		61
F03C1/0602	10	{Component parts, details}	F03C1/06	F03C1/06		59
F03C1/0605	11	{Adaptations of pistons (pump pistons F04B1/124, F04B53/14)}	F03C1/28	F03C1/06		153
F03C1/0607	11	{Driven means}	F03C1/06	F03C1/06		52
F03C1/061	10	{having stationary cylinders}	F03C1/06	F03C1/06		42
F03C1/0613	11	{having two or more sets of cylinders or pistons}	F03C1/06	F03C1/06		47
F03C1/0615	11	{distributing members}	F03C1/34	F03C1/06		68
F03C1/0618	12	{cylindrical distribution members}	F03C1/36	F03C1/06		18
F03C1/0621	12	{conical distribution members}	F03C1/34	F03C1/06		
F03C1/0623	11	{Details, component parts}	F03C1/06	F03C1/06		25
F03C1/0626	12	{Cylinders}	F03C1/32	F03C1/06		23
F03C1/0628	12	{Casings, housings}	F03C1/06	F03C1/06		19
F03C1/0631	12	{Wobbler or actuated element}	F03C1/06	F03C1/06		46
F03C1/0634	13	{Actuated element bearing means or driven axis bearing means}	F03C1/06	F03C1/06		15
F03C1/0636	10	{having rotary cylinder block}	F03C1/06	F03C1/06		220
F03C1/0639	11	{having two or more sets of cylinders or pistons}	F03C1/06	F03C1/06		83
F03C1/0642	12	{inclined on main shaft axis}	F03C1/06	F03C1/06		56
F03C1/0644	11	{Component parts}	F03C1/06	F03C1/06		125
F03C1/0647	12	{Particularities in the contacting area between cylinder barrel and valve plate}	F03C1/06	F03C1/06		67
F03C1/0649	13	{Bearing means}	F03C1/06	F03C1/06		9
F03C1/0652	12	{Cylinders}	F03C1/32	F03C1/06		121
F03C1/0655	12	{Valve means}	F03C1/34	F03C1/06		128
F03C1/0657	13	{Cylindrical valve means}	F03C1/36	F03C1/06		17
F03C1/066	13	{Conical valve means}	F03C1/34	F03C1/06		
F03C1/0663	12	{Casings, housings}	F03C1/06	F03C1/06		71
F03C1/0665	13	{Cylinder barrel bearing means}	F03C1/06	F03C1/06		26
F03C1/0668	12	{Swash or actuated plate}	F03C1/06	F03C1/06		118
F03C1/0671	13	{Swash or actuated plate bearing means or driven axis bearing means}	F03C1/06	F03C1/06		74
F03C1/0673	11	{Connection between rotating cylinder and rotating inclined swash plate}	F03C1/06	F03C1/06		21
F03C1/0676	11	{Arrangement for pressing the cylinder barrel against the valve plate}	F03C1/06	F03C1/06		9
F03C1/0678	10	{Control}	F03C1/40	F03C1/06		136
F03C1/0681	11	{using a valve in a system with several motor chambers, wherein the flow path through the chambers can be changed}	F03C1/40	F03C1/06		31
F03C1/0684	11	{using a by-pass valve}	F03C1/40	F03C1/06		15
F03C1/0686	11	{by changing the inclination of the swash plate}	F03C1/40	F03C1/06		230
F03C1/0689	12	{using wedges}	F03C1/40	F03C1/06		1
F03C1/0692	11	{by changing the phase relationship between the actuated element and the distribution means, e.g. turning the valve plate; turning the swash plate}	F03C1/40	F03C1/06		35
F03C1/0694	11	{by changing the inclination of the axis of the cylinder barrel in relation to the axis of the actuated element}	F03C1/40	F03C1/06		33
F03C1/0697	11	{responsive to the speed}	F03C1/40	F03C1/06		24
F03C1/08	8	Distributing valve-gear peculiar thereto (for engines with positive-displacement in general F01L; {F03C1/06 takes precedence})	F03C1/08	F03C1/08		143
F03C1/10	9	actuated by piston or piston-rod	F03C1/10	F03C1/10		65
F03C1/12	10	mechanically	F03C1/12	F03C1/12		34
F03C1/14	9	by driving liquid of engine	F03C1/14	F03C1/14		56
F03C1/16	9	Speed controlling, equalising or cushioning	F03C1/16	F03C1/16		31
F03C1/20	9	specially adapted for engines generating vibration only	F03C1/20	F03C1/20		13
F03C1/22	8	with movable cylinders {or cylinder}	F03C1/22	F03C1/22		114
F03C1/223	9	{having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the inner ends of the cylinders}	F03C1/22	F03C1/22		62
F03C1/226	10	{with cam actuated distribution members}	F03C1/22	F03C1/22		9
F03C1/24	9	in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders {(F03C1/0636 takes precedence)}	F03C1/24	F03C1/24		42
F03C1/2407	10	{having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the outer ends of the cylinders}	F03C1/24	F03C1/24		87
F03C1/2415	11	{cylinder block and actuated cam both rotating (F03C1/2431 and F03C1/2446 take precedence)}	F03C1/24	F03C1/24		17
F03C1/2423	11	{with two or more series radial piston-cylinder units}	F03C1/24	F03C1/24		11
F03C1/2431	12	{cylinder block and actuated cam both rotating (F03C1/2446 takes precedence)}	F03C1/24	F03C1/24		2
F03C1/2438	12	{directly located side by side}	F03C1/24	F03C1/24		25
F03C1/2446	13	{cylinder block and actuated cam both rotating}	F03C1/24	F03C1/24		2
F03C1/2454	10	{having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the inner ends of the cylinders}	F03C1/24	F03C1/24		24
F03C1/2462	10	{the rotary cylinder being provided with only one piston reciprocating within this cylinder}	F03C1/24	F03C1/24		11
F03C1/247	10	with cylinders in star- or fan-arrangement {, the connection of the pistons with an actuated element being at the outer ends of the cylinders}	F03C1/247	F03C1/247		46
F03C1/26	8	adapted for special use or combined with apparatus driven thereby	F03C1/26	F03C1/26		286
F03C2/00	7	Rotary-piston engines (in which the liquid exclusively displaces one or more piston reciprocating in rotary cylinders F03C1/24)<br><br><u>NOTE</u><br><br>Group F03C2/30 takes precedence over groups F03C2/02&#160;-&#160;F03C2/24.	F03C2/00	F03C2/00		104
F03C2/02	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	F03C2/02	F03C2/02		22
F03C2/08	8	of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing	F03C2/08	F03C2/08		525
F03C2/22	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	F03C2/22	F03C2/22		69
F03C2/24	8	of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions	F03C2/24	F03C2/24		3
F03C2/30	8	having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members	F03C2/30	F03C2/30		219
F03C2/302	9	{having both the movements defined in sub-groups F03C2/02 and relative reciprocation between members}	F03C2/30	F03C2/30		10
F03C2/304	9	{having both the movements defined in sub-group F03C2/08 or F03C2/22 and relative reciprocation between members}	F03C2/30	F03C2/30		205
F03C2/306	9	{having both the movements defined in sub-groups F03C2/22 and F03C2/24}	F03C2/30	F03C2/30		10
F03C2/308	9	{having the movement defined in F03C2/08 and having a hinged member}	F03C2/30	F03C2/30		30
F03C4/00	7	Oscillating-piston engines	F03C4/00	F03C4/00		104
F03C7/00	7	Engines of flexible-wall type	F03C7/00	F03C7/00		85
F03C99/00	7	Subject matter not provided for in other groups of this subclass	F03C99/00	F03C99/00		25
F03C99/005	8	{Free-piston type engines}	F03C99/00	F03C99/00		2
