F01C

ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES internal-combustion aspects F02B53/00, F02B55/00

This subclass covers:

rotary-piston or oscillating-piston engines for elastic fluids, e.g. steam;

rotary-piston or oscillating-piston engines for liquids and elastic fluids:

rotary-piston or oscillating-piston machines for elastic fluids;

rotary-piston or oscillating-piston machines for liquids and elastic fluids.

In this subclass, the following expression is used with the meaning indicated:

"rotary-piston machine" includes the German expressions "Drehkolbenmaschinen", "Kreiskolbenmaschinen" and "Umlaufkolbenmaschinen".

Attention is drawn to the Notes preceding class F01, especially as regards the definitions of "rotary-piston machine", "oscillating-piston machine", "rotary piston", "co-operating members", "movement of co-operating members", "teeth or tooth-equivalents" and "internal-axis".

In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.

F01C1/00

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

Group F01C1/30 takes precedence over groups F01C1/02 - F01C1/28.

F01C1/02

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

F01C1/0207

both members having co-operating elements in spiral form

F01C1/0215

where only one member is moving

F01C1/0223

with symmetrical double wraps

F01C1/023

where both members are moving

F01C1/0238

with symmetrical double wraps

F01C1/0246

Details concerning the involute wraps or their base, e.g. geometry

F01C1/0253

Details concerning the base

F01C1/0261

Details of the ports, e.g. location, number, geometry

F01C1/0269

Details concerning the involute wraps

F01C1/0276

Different wall heights

F01C1/0284

Details of the wrap tips

F01C1/0292

Ports or channels located in the wrap

F01C1/04

of internal-axis type

F01C1/045

having a C-shaped piston

F01C1/06

of other than internal-axis type F01C1/063 takes precedence

F01C1/063

with coaxially-mounted members having continuously-changing circumferential spacing between them

F01C1/067

having cam-and-follower type drive

F01C1/07

having crankshaft-and-connecting-rod type drive

F01C1/073

having pawl-and-ratchet type drive

F01C1/077

having toothed-gearing type drive

F01C1/08

of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing

F01C1/082

Details specially related to intermeshing engagement type machines or engines

F01C1/084

Toothed wheels

F01C1/086

Carter

F01C1/088

Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement

F01C1/10

of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member

F01C1/101

Moineau-type

F01C1/102

with a crescent shaped filler element located between the intermeshing elements

F01C1/103

the two members rotating simultaneously around their respective axes

F01C1/104

one member having simultaneously a rotational movement about its own axis and an orbital movement

F01C1/105

and having an articulated driving shaft

F01C1/107

with helical teeth

F01C1/113

the inner member carrying rollers intermeshing with the outer member

F01C1/12

of other than internal-axis type

F01C1/123

with tooth-like elements, extending generally radially from the rotor body cooperating with recesses in the other rotor, e.g. one tooth

F01C1/126

with elements extending radially from the rotor body not necessarily cooperating with corresponding recesses in the other rotor, e.g. lobes, Roots type

F01C1/14

with toothed rotary pistons

F01C1/16

with helical teeth, e.g. chevron-shaped, screw type

for non-parallel axes of movement F01C3/00

F01C1/165

having more than two rotary pistons with parallel axes

F01C1/18

with similar tooth forms F01C1/16 takes precedence

F01C1/20

with dissimilar tooth forms F01C1/16 takes precedence

F01C1/22

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

F01C1/24

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

F01C1/26

of internal-axis type

F01C1/28

of other than internal-axis type

F01C1/30

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

F01C1/32

having both the movement defined in group F01C1/02 and relative reciprocation between the co-operating members

F01C1/321

with vanes hinged to the inner member and reciprocating with respect to the inner member

F01C1/322

with vanes hinged to the outer member and reciprocating with respect to the outer member

F01C1/324

with vanes hinged to the inner member and reciprocating with respect to the outer member

F01C1/328

and hinged to the outer member

F01C1/332

with vanes hinged to the outer member and reciprocating with respect to the inner member

F01C1/336

and hinged to the inner member

F01C1/34

having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members

F01C1/344

with vanes reciprocating with respect to the inner member

F01C1/3441

the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation

F01C1/3442

the surfaces of the inner and outer member, forming the working space, being surfaces of revolution

F01C1/3443

with a separation element located between the inlet and outlet opening

F01C1/3445

the vanes having the form of rollers, slippers or the like

F01C1/3446

the inner and outer member being in contact along more than one line or surface

F01C1/3447

the vanes having the form of rollers, slippers or the like

F01C1/3448

with axially movable vanes

F01C1/348

the vanes positively engaging, with circumferential play, an outer rotatable member

F01C1/352

the vanes being pivoted on the axis of the outer member

F01C1/356

with vanes reciprocating with respect to the outer member

F01C1/3562

the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation

F01C1/3564

the surfaces of the inner and outer member, forming the working space, being surfaces of revolution

F01C1/3566

the inner and outer member being in contact along more than one line or surface

F01C1/3568

with axially movable vanes

F01C1/36

having both the movements defined in sub-groups F01C1/22 and F01C1/24

F01C1/38

having the movement defined in group F01C1/02 and having a hinged member F01C1/32 takes precedence

F01C1/39

with vanes hinged to the inner as well as to the outer member

F01C1/40

having the movement defined in group F01C1/08 or F01C1/22 and having a hinged member

F01C1/44

with vanes hinged to the inner member

F01C1/46

with vanes hinged to the outer member

F01C3/00

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

F01C3/02

the axes being arranged at an angle of 90 degrees

F01C3/025

of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

F01C3/04

with axially sliding vanes

F01C3/06

the axes being arranged otherwise than at an angle of 90 degrees

F01C3/08

of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

F01C3/085

the axes of cooperating members being on the same plane

F01C5/00

Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable

F01C5/02

the resiliently-deformable wall being part of the inner member, e.g. of a rotary piston

F01C5/04

the resiliently-deformable wall being part of the outer member, e.g. of a housing

F01C5/06

the resiliently-deformable wall being a separate member

F01C5/08

of tubular form, e.g. hose

F01C7/00

Rotary-piston machines or engines with fluid ring or the like

F01C9/00

Oscillating-piston machines or engines

F01C9/002

the piston oscillating around a fixed axis

F01C9/005

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

F01C9/007

the points of the moving element describing approximately an alternating movement in axial direction with respect to the other element

F01C11/00

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

F01C11/002

of similar working principle

F01C11/004

and of complementary function, e.g. internal combustion engine with supercharger

F01C11/006

of dissimilar working principle

F01C11/008

and of complementary function, e.g. internal combustion engine with supercharger

Multi-stage steam engines or similar machines are not considered as having complementary function

F01C13/00

Adaptations of machines or engines for special use

Combinations of engines with devices driven thereby aspects predominantly concerning driven devices, see the relevant classes for these devices

F01C13/02

for driving hand-held tools or the like

F01C13/04

for driving pumps or compressors

F01C17/00

Arrangements for drive of co-operating members, e.g. for rotary piston and casing

F01C17/02

of toothed-gearing type F01C1/077 takes precedence

F01C17/04

of cam-and-follower type F01C1/067 takes precedence

F01C17/06

using cranks, universal joints or similar elements F01C1/07 takes precedence

F01C17/063

with only rolling movement

F01C17/066

with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling

F01C19/00

Sealing arrangements in rotary-piston machines or engines sealings in general F16J

F01C19/005

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

F01C19/02

Radially-movable sealings for working fluids

F01C19/025

Radial sealing elements specially adapted for intermeshing engagement type machines or engines, e.g. gear machines or engines

F01C19/04

of rigid material

F01C19/06

of resilient material

F01C19/08

Axially-movable sealings for working fluids

F01C19/085

Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or engines, e.g. gear machines or engines

F01C19/10

Sealings for working fluids between radially and axially movable parts

F01C19/12

for other than working fluid

F01C19/125

Shaft sealings specially adapted for rotary or oscillating-piston machines or engines

F01C20/00

Control of, monitoring of, or safety arrangements for, machines or engines

F01C20/02

specially adapted for several machines or engines connected in series or in parallel

F01C20/04

specially adapted for reversible machines or engines

F01C20/06

specially adapted for stopping, starting, idling or no-load operation

F01C20/08

characterised by varying the rotational speed

F01C20/10

characterised by changing the positions of the inlet or outlet openings with respect to the working chamber

F01C20/12

using sliding valves

F01C20/125

with sliding valves controlled by the use of fluid other than the working fluid

F01C20/14

using rotating valves

F01C20/16

using lift valves

F01C20/18

characterised by varying the volume of the working chamber by changing the positions of inlet or outlet openings F01C20/10

F01C20/185

by varying the useful pumping length of the cooperating members in the axial direction

F01C20/20

by changing the form of the inner or outlet contour of the working chamber

F01C20/22

by changing the eccentricity between cooperating members

F01C20/24

characterised by using valves for controlling pressure or flow rate, e.g. discharge valves F01C20/10 takes precedence

F01C20/26

using bypass channels

F01C20/265

being obtained by displacing a lateral sealing face

F01C20/28

Safety arrangements

Monitoring

F01C21/00

Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00

F01C21/001

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

F01C21/002

with control systems for the injection of the fluid

F01C21/003

Systems for the equilibration of forces acting on the elements of the machine interstice adjustment other than by fluid pressure F01C21/102

F01C21/005

Internal leakage control

F01C21/006

Equalization of pressure pulses silencing for compressors F04C29/06

F01C21/007

General arrangements of parts; Frames and supporting elements

F01C21/008

Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines brakes, couplings, transmissions per se F16, B60

F01C21/02

Arrangements of bearings bearing constructions F16C

F01C21/04

Lubrication of machines or engines in general F01M

F01C21/045

Control systems for the circulation of the lubricant

F01C21/06

Heating

Cooling of machines or engines in general F01P

Heat insulation heat insulation in general F16L

F01C21/08

Rotary pistons reciprocating pistons in general F16J

F01C21/0809

Construction of vanes or vane holders

F01C21/0818

Vane tracking; control therefor

F01C21/0827

by mechanical means

F01C21/0836

comprising guiding means, e.g. cams, rollers

F01C21/0845

comprising elastic means, e.g. springs

F01C21/0854

by fluid means

F01C21/0863

the fluid being the working fluid

F01C21/0872

the fluid being other than the working fluid

F01C21/0881

the vanes consisting of two or more parts

F01C21/089

for synchronised movement of the vanes

F01C21/10

Outer members for co-operation with rotary pistons

Casings casings for rotary engines or machines in general F16M

F01C21/102

Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure

F01C21/104

Stators; Members defining the outer boundaries of the working chamber

F01C21/106

with a radial surface, e.g. cam rings

F01C21/108

with an axial surface, e.g. side plates

F01C2021/12

Control of working fluid admission or discharge

F01C2021/125

Arrangements for supercharging the working space

F01C2021/14

for variable fluid distribution

F01C2021/16

Other regulation or control

F01C2021/1606

Variation of the working chamber

F01C2021/1612

by changing the eccentricity of an element with respect to another element

F01C2021/1618

by changing the positions of the inlet and outlet openings with respect to the working chambers

F01C2021/1625

with sliding or rotating valves, adjustable in position

F01C2021/1631

with sliding valves controlled by the use of fluid other than the working fluid

F01C2021/1637

by changing the form of the radially inner or the radially outer contour of the working chamber

F01C2021/1643

by using valves regulating pressure and flow rate, e.g. discharge valves

F01C2021/165

using a by-pass channel

F01C2021/1656

being obtained by displacing a lateral sealing face

F01C2021/1662

with venting means

F01C2021/1668

with several machines or engines connected in series or in parallel

F01C2021/1675

with reversible machines or engines

F01C2021/1681

by varying the rotational speed

F01C2021/1687

Safety arrangements

F01C2021/1693

Stopping or starting, idling or no-load operation

F01C21/18

Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

F01C21/183

Arrangements for supercharging the working space similar arrangements for internal combustion engines F02B33/00, F02B27/00

F01C21/186

for variable fluid distribution