1. CPC Sections
  2. CPC Section F
  3. CPC Class F03
  4. CPC Subclass F03C
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
F03C
POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS (positive- displacement engines for liquids and elastic fluids F01; positive- displacement machines for liquids F04; fluid-pressure actuators F15B; fluid gearing F16H) [2019-08]
NOTE

  • Attention is drawn to the notes preceding class F01, especially as regards the meanings of "positive displacement", "rotary-piston machines", "oscillating-piston machines", "rotary-piston", "co-operating members", "movement of co-operating members", "teeth or tooth-equivalents", and "internal axis".
WARNINGS

F03C 1/00
Reciprocating-piston liquid engines [2013-01]
F03C 1/001
.
{the movement in two directions being obtained by two or more double-acting piston liquid motors} [2013-01]
F03C 1/002
.
{details; components parts} [2013-01]
F03C 1/003
.
{controlling} [2013-01]
F03C 1/004
. .
{speed-control} [2013-01]
F03C 1/005
. .
{motor piston stroke control} [2013-01]
F03C 1/007
.
with single cylinder, double-acting piston [2013-01]
F03C 1/0073
. .
{one side of the double-acting piston being always under the influence of the liquid under pressure} [2013-01]
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} [2013-01]
F03C 1/013
.
with single cylinder, single-acting piston [2013-01]
F03C 1/0135
. .
{with actuation of the return stroke by gravity} [2013-01]
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 7/00) [2013-01]
F03C 1/03
. .
with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction [2013-01]
F03C 1/035
. . .
{one single-acting piston being always under the influence of the liquid under pressure} [2013-01]
F03C 1/04
. .
with cylinders in star or fan arrangement {(F03C 1/22 takes precedence)} [2013-01]
F03C 1/0403
. . .
{Details, component parts specially adapted of such engines} [2013-01]
F03C 1/0406
. . . .
{Pistons} [2013-01]
F03C 1/0409
. . . .
{Cams} [2013-01]
F03C 1/0412
. . . . .
{consisting of several cylindrical elements, e.g. rollers} [2016-08]
F03C 1/0415
. . . .
{Cylinders} [2013-01]
F03C 1/0419
. . . .
{Arrangements for pressing or connecting the pistons against the actuated cam} [2013-01]
F03C 1/0422
. . . . .
{hydraulically} [2013-01]
F03C 1/0425
. . . .
{Disconnecting the pistons from the actuated cam (in general F01B 31/24)} [2013-01]
F03C 1/0428
. . . .
{Supporting and guiding means for the pistons} [2013-01]
F03C 1/0431
. . . .
{Draining of the engine housing; arrangements dealing with leakage fluid} [2013-01]
F03C 1/0435
. . . .
{Particularities relating to the distribution members (F03C 1/0472, F03C 1/0531, and F03C 1/0538 take precedence)} [2013-01]
F03C 1/0438
. . . . .
{to cylindrical distribution members} [2013-01]
F03C 1/0441
. . . . .
{to conical distribution members} [2013-01]
F03C 1/0444
. . . . .
{to plate-like distribution members} [2013-01]
F03C 1/0447
. . .
{Controlling} [2013-01]
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} [2013-01]
F03C 1/0454
. . . .
{by changing the effective cross sectional piston working surface} [2013-01]
F03C 1/0457
. . . .
{by changing the effective piston stroke} [2013-01]
F03C 1/046
. . . . .
{by changing the excentricity of one element relative to another element} [2013-01]
F03C 1/0463
. . . .
{by changing the phase relationship between two actuated cams} [2013-01]
F03C 1/0466
. . . .
{by changing the phase relationship between the actuated cam and the distributing means} [2013-01]
F03C 1/047
. . .
the pistons co-operating with an actuated element at the outer ends of the cylinders [2013-01]
F03C 1/0472
. . . .
{with cam-actuated distribution members} [2013-01]
F03C 1/0474
. . . .
{with two or more radial piston/cylinder units in series} [2013-01]
F03C 1/0476
. . . . .
{directly located side by side} [2013-01]
F03C 1/0478
. . . . .
{having several cylinder barrels coupled together} [2013-01]
F03C 1/053
. . .
the pistons co-operating with an actuated element at the inner ends of the cylinders [2013-01]
F03C 1/0531
. . . .
{with cam-actuated distribution members} [2013-01]
F03C 1/0533
. . . . .
{each piston being provided with channels coacting with the cylinder and being used as a distribution member for another cylinder} [2013-01]
F03C 1/0535
. . . .
{with two or more radial piston/cylinder units in series} [2013-01]
F03C 1/0536
. . . . .
{directly located side by side} [2013-01]
F03C 1/0538
. . . .
{the piston-driven cams being provided with inlets or outlets} [2013-01]
F03C 1/06
. .
with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis [2013-01]
F03C 1/0602
. . .
{Component parts, details} [2013-01]
F03C 1/0605
. . . .
{Adaptations of pistons (pump pistons F04B 1/124, F04B 53/14)} [2013-01]
F03C 1/0607
. . . .
{Driven means} [2013-01]
F03C 1/061
. . .
{having stationary cylinders} [2013-01]
F03C 1/0613
. . . .
{having two or more sets of cylinders or pistons} [2013-01]
F03C 1/0615
. . . .
{distributing members} [2013-01]
F03C 1/0618
. . . . .
{cylindrical distribution members} [2013-01]
F03C 1/0621
. . . . .
{conical distribution members} [2013-01]
F03C 1/0623
. . . .
{Details, component parts} [2013-01]
F03C 1/0626
. . . . .
{Cylinders} [2013-01]
F03C 1/0628
. . . . .
{Casings, housings} [2013-01]
F03C 1/0631
. . . . .
{Wobbler or actuated element} [2013-01]
F03C 1/0634
. . . . . .
{Actuated element bearing means or driven axis bearing means} [2013-01]
F03C 1/0636
. . .
{having rotary cylinder block} [2013-01]
F03C 1/0639
. . . .
{having two or more sets of cylinders or pistons} [2013-01]
F03C 1/0642
. . . . .
{inclined on main shaft axis} [2013-01]
F03C 1/0644
. . . .
{Component parts} [2013-01]
F03C 1/0647
. . . . .
{Particularities in the contacting area between cylinder barrel and valve plate} [2013-01]
F03C 1/0649
. . . . . .
{Bearing means} [2013-01]
F03C 1/0652
. . . . .
{Cylinders} [2013-01]
F03C 1/0655
. . . . .
{Valve means} [2013-01]
F03C 1/0657
. . . . . .
{Cylindrical valve means} [2013-01]
F03C 1/066
. . . . . .
{Conical valve means} [2013-01]
F03C 1/0663
. . . . .
{Casings, housings} [2013-01]
F03C 1/0665
. . . . . .
{Cylinder barrel bearing means} [2013-01]
F03C 1/0668
. . . . .
{Swash or actuated plate} [2013-01]
F03C 1/0671
. . . . . .
{Swash or actuated plate bearing means or driven axis bearing means} [2013-01]
F03C 1/0673
. . . .
{Connection between rotating cylinder and rotating inclined swash plate} [2013-01]
F03C 1/0676
. . . .
{Arrangement for pressing the cylinder barrel against the valve plate} [2013-01]
F03C 1/0678
. . .
{Control} [2013-01]
F03C 1/0681
. . . .
{using a valve in a system with several motor chambers, wherein the flow path through the chambers can be changed} [2013-01]
F03C 1/0684
. . . .
{using a by-pass valve} [2013-01]
F03C 1/0686
. . . .
{by changing the inclination of the swash plate} [2013-01]
F03C 1/0689
. . . . .
{using wedges} [2013-01]
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} [2013-01]
F03C 1/0694
. . . .
{by changing the inclination of the axis of the cylinder barrel in relation to the axis of the actuated element} [2013-01]
F03C 1/0697
. . . .
{responsive to the speed} [2013-01]
F03C 1/08
.
Distributing valve-gear peculiar thereto (for engines with positive-displacement in general F01L; {F03C 1/06 takes precedence}) [2013-01]
F03C 1/10
. .
actuated by piston or piston-rod [2013-01]
F03C 1/12
. . .
mechanically [2013-01]
F03C 1/14
. .
by driving liquid of engine [2015-07]
F03C 1/16
. .
Speed controlling, equalising or cushioning [2013-01]
F03C 1/20
. .
specially adapted for engines generating vibration only [2013-01]
F03C 1/22
.
with movable cylinders {or cylinder} [2013-01]
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} [2013-01]
F03C 1/226
. . .
{with cam actuated distribution members} [2013-01]
F03C 1/24
. .
in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders {(F03C 1/0636 takes precedence)} [2013-01]
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} [2013-01]
F03C 1/2415
. . . .
{cylinder block and actuated cam both rotating (F03C 1/2431 and F03C 1/2446 take precedence)} [2013-01]
F03C 1/2423
. . . .
{with two or more series radial piston-cylinder units} [2013-01]
F03C 1/2431
. . . . .
{cylinder block and actuated cam both rotating (F03C 1/2446 takes precedence)} [2013-01]
F03C 1/2438
. . . . .
{directly located side by side} [2013-01]
F03C 1/2446
. . . . . .
{cylinder block and actuated cam both rotating} [2013-01]
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} [2013-01]
F03C 1/2462
. . .
{the rotary cylinder being provided with only one piston reciprocating within this cylinder} [2017-05]
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} [2017-08]
F03C 1/26
.
adapted for special use or combined with apparatus driven thereby [2024-01]
​
F03C 2/00
Rotary-piston engines (in which the liquid exclusively displaces one or more piston reciprocating in rotary cylinders F03C 1/24) [2016-05]
NOTE

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 [2013-01]
F03C 2/08
.
of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing [2013-01]
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 [2013-01]
F03C 2/24
.
of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions [2013-01]
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 [2013-01]
F03C 2/302
. .
{having both the movements defined in sub-groups F03C 2/02 and relative reciprocation between members} [2013-01]
F03C 2/304
. .
{having both the movements defined in sub-group F03C 2/08 or F03C 2/22 and relative reciprocation between members} [2013-01]
F03C 2/306
. .
{having both the movements defined in sub-groups F03C 2/22 and F03C 2/24} [2013-01]
F03C 2/308
. .
{having the movement defined in F03C 2/08 and having a hinged member} [2013-01]
F03C 4/00
Oscillating-piston engines [2013-01]
F03C 7/00
Engines of flexible-wall type [2013-01]
F03C 99/00
Subject matter not provided for in other groups of this subclass [2013-01]
F03C 99/005
.
{Free-piston type engines} [2013-01]