WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F03C　POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS (positivedisplacement engines for liquids and elastic fluids F01; positive- displacement machines for liquids F04; fluid-pressure actuators F15B; fluid gearing F16H)

F03C 1/00 Reciprocating-piston liquid engines

F03C 1/001 ・{the movement in two directions being obtained by two or more double-acting piston liquid motors}

F03C 1/002 ・{details; components parts}

F03C 1/003 ・{controlling}

F03C 1/004 ・・{speed-control}

F03C 1/005 ・・{motor piston stroke control}

F03C 1/007 ・with single cylinder, double-acting piston

F03C 1/0073 ・・{one side of the double-acting piston being always under the influence of the liquid under pressure}

F03C 1/0076 ・・・{the liquid under pressure being continuously delivered to one cylinder chamber through a valve in the piston for actuating the return stroke}

F03C 1/013 ・with single cylinder, single-acting piston

F03C 1/0135 ・・{with actuation of the return stroke by gravity}

F03C 1/02 ・with multiple-cylinders, characterised by the number or arrangement of cylinders (with movable cylinders F03C 1/22; of flexible-wall type F03C 5/02)

F03C 1/03 ・・with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction

F03C 1/035 ・・・{one single-acting piston being always under the influence of the liquid under pressure}

F03C 1/04 ・・with cylinders in star or fan arrangement {F03C 1/22 takes precedence}

F03C 1/0403 ・・・{Details, component parts specially adapted of such engines}

F03C 1/0406 ・・・・{Pistons}

F03C 1/0409 ・・・・{Cams}

F03C 1/0412 ・・・・・{consisting of several cylindrical elements e.g. rollers}

F03C 1/0415 ・・・・{Cylinders}

F03C 1/0419 ・・・・{Arrangements for pressing or connecting the pistons against the actuated cam}

F03C 1/0422 ・・・・・{hydraulically}

F03C 1/0425 ・・・・{Disconnecting the pistons from the actuated cam (in general F01B 31/24)}

F03C 1/0428 ・・・・{Supporting and guiding means for the pistons}

F03C 1/0431 ・・・・{Draining of the engine housing; arrangements dealing with leakage fluid}

F03C 1/0435 ・・・・{Particularities relating to the distribution members (F03C 1/0472, F03C 1/0531, and F03C 1/0538 take precedence)}

F03C 1/0438 ・・・・・{to cylindrical distribution members}

F03C 1/0441 ・・・・・{to conical distribution members}

F03C 1/0444 ・・・・・{to plate-like distribution members}

F03C 1/0447 ・・・{Controlling}

F03C 1/045 ・・・・{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}

F03C 1/0454 ・・・・{by changing the effective cross sectional piston working surface}

F03C 1/0457 ・・・・{by changing the effective piston stroke}

F03C 1/046 ・・・・・{by changing the excentricity of one element relative to another element}

F03C 1/0463 ・・・・{by changing the phase relationship between two actuated cams}

F03C 1/0466 ・・・・{by changing the phase relationship between the actuated cam and the distributing means}

F03C 1/047 ・・・the pistons co-operating with an actuated element at the outer ends of the cylinders

F03C 1/0472 ・・・・{with cam-actuated distribution members}

F03C 1/0474 ・・・・{with two or more radial piston/cylinder units in series}

F03C 1/0476 ・・・・・{directly located side by side}

F03C 1/0478 ・・・・・{having several cylinder barrels coupled together}

F03C 1/053 ・・・the pistons co-operating with an actuated element at the inner ends of the cylinders

F03C 1/0531 ・・・・{with cam-actuated distribution members}

F03C 1/0533 ・・・・・{each piston being provided with channels coacting with the cylinder and being used as a distribution member for another cylinder}

F03C 1/0535 ・・・・{with two or more radial piston/cylinder units in series}

F03C 1/0536 ・・・・・{directly located side by side}

F03C 1/0538 ・・・・{the piston-driven cams being provided with inlets or outlets}

F03C 1/06 ・・with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis

F03C 1/0602 ・・・{Component parts, details}

F03C 1/0605 ・・・・{Adaptations of pistons (pump pistons F04B 1/124, F04B 53/14)}

F03C 1/0607 ・・・・{Driven means}

F03C 1/061 ・・・{having stationary cylinders}

F03C 1/0613 ・・・・{having two or more sets of cylinders or pistons}

F03C 1/0615 ・・・・{distributing members}

F03C 1/0618 ・・・・・{cylindrical distribution members}

F03C 1/0621 ・・・・・{conical distribution members}

F03C 1/0623 ・・・・{Details, component parts}

F03C 1/0626 ・・・・・{Cylinders}

F03C 1/0628 ・・・・・{Casings, housings}

F03C 1/0631 ・・・・・{Wobbler or actuated element}

F03C 1/0634 ・・・・・・{Actuated element bearing means or driven axis bearing means}

F03C 1/0636 ・・・{having rotary cylinder block}

F03C 1/0639 ・・・・{having two or more sets of cylinders or pistons}

F03C 1/0642 ・・・・・{inclined on main shaft axis}

F03C 1/0644 ・・・・{Component parts}

F03C 1/0647 ・・・・・{Particularities in the contacting area between cylinder barrel and valve plate}

F03C 1/0649 ・・・・・・{Bearing means}

F03C 1/0652 ・・・・・{Cylinders}

F03C 1/0655 ・・・・・{Valve means}

F03C 1/0657 ・・・・・・{Cylindrical valve means}

F03C 1/066 ・・・・・・{Conical valve means}

F03C 1/0663 ・・・・・{Casings, housings}

F03C 1/0665 ・・・・・・{Cylinder barrel bearing means}

F03C 1/0668 ・・・・・{Swash or actuated plate}

F03C 1/0671 ・・・・・・{Swash or actuated plate bearing means or driven axis bearing means}

F03C 1/0673 ・・・・{Connection between rotating cylinder and rotating inclined swash plate}

F03C 1/0676 ・・・・{Arrangement for pressing the cylinder barrel against the valve plate}

F03C 1/0678 ・・・{Control}

F03C 1/0681 ・・・・{using a valve in a system with several motor chambers, wherein the flow path through the chambers can be changed}

F03C 1/0684 ・・・・{using a by-pass valve}

F03C 1/0686 ・・・・{by changing the inclination of the swash plate}

F03C 1/0689 ・・・・・{using wedges}

F03C 1/0692 ・・・・{by changing the phase relationship between the actuated element and the distribution means, e.g. turning the valve plate; turning the swash plate}

F03C 1/0694 ・・・・{by changing the inclination of the axis of the cylinder barrel in relation to the axis of the actuated element}

F03C 1/0697 ・・・・{responsive to the speed}

F03C 1/08 ・Distributing valve-gear peculiar thereto (for engines with positive-displacement in general F01L); {F03C 1/06 takes precedence}

F03C 1/10 ・・actuated by piston or piston-rod

F03C 1/12 ・・・mechanically (F03C 1/18 takes precedence)

F03C 1/14 ・・by driving liquid of engine (F03C 1/18 takes precedence)

F03C 1/16 ・・Speed controlling, equalising or cushioning

F03C 1/20 ・・specially adapted for engines generating vibration only

F03C 1/22 ・with movable cylinders {or cylinder}

F03C 1/223 ・・{having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the inner ends of the cylinders}

F03C 1/226 ・・・{with cam actuated distribution members}

F03C 1/24 ・・in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders {(F03C 1/0636 takes precedence)}

F03C 1/2407 ・・・{having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the outer ends of the cylinders}

F03C 1/2415 ・・・・{cylinder block and actuated cam both rotating (F03C 1/2431 and F03C 1/2446 take precedence)}

F03C 1/2423 ・・・・{with two or more series radial piston-cylinder units}

F03C 1/2431 ・・・・・{cylinder block and actuated cam both rotating (F03C 1/2446 takes precedence)}

F03C 1/2438 ・・・・・{directly located side by side}

F03C 1/2446 ・・・・・・{cylinder block and actuated cam both rotating}

F03C 1/2454 ・・・{having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the inner ends of the cylinders}

F03C 1/2462 ・・・{the rotary cylinder being provided with only one piston reci- procating within this cylinder}

F03C 1/247 ・・・with cylinders in star- or fan-arrangement, {the connection of the pistons with an actuated element being at the outer ends of the cylinders}

F03C 1/26 ・adapted for special use or combined with apparatus driven thereby (aspects predominantly concerning the driven apparatus see the relevant classes for such apparatus)

F03C 2/00 Rotary-piston engines (in which the liquid exclusively displaces one or more piston reciprocating in rotary cylinders F03C 1/24)

F03C 2/02 ・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

F03C 2/08 ・of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing

F03C 2/22 ・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

F03C 2/24 ・of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions

F03C 2/30 ・having the characteristics covered by two or more of groups F03C 2/02, F03C 2/08, F03C 2/22, F03C 2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members

F03C 2/302 ・・{having both the movements defined in sub-groups F03C 2/02 and relative reciprocation between members}

F03C 2/304 ・・{having both the movements defined in sub-group F03C 2/08 or F03C 2/22 and relative reciprocation between members}

F03C 2/306 ・・{having both the movements defined in sub-groups F03C 2/22 and F03C 2/24}

F03C 2/308 ・・{having the movement defined in F03C 2/08 and having a hinged member}

F03C 4/00 Oscillating-piston engines

F03C 7/00 Engines of flexible-wall type

F03C 99/00 Subject matter not provided for in other groups of this subclass

F03C 99/005 ・{Free-piston type engines}