IPC 7 English version F01C !A-F01C 21/16

F01C-F01C02116

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 01

MACHINES OR ENGINES IN GENERAL (combustion engines F02; machines for liquids F03, F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES

F 01 C

ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (internal-combustion aspects F02B 53/00, F02B 55/00)

Notes

(1)

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.

(2)

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

–

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

(3)

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".

Subclass Index

MACHINES OR ENGINES

With rotary pistons

F01C 1/00 to F01C 7/00

With oscillating pistons

F01C 9/00

COMBINATIONS OR ADAPTATIONS OF MACHINES OR ENGINES

F01C 11/00, F01C 13/00

DRIVE OF CO-OPERATING MEMBERS; SEALING ARRANGEMENTS

F01C 17/00; F01C 19/00

OTHER DETAILS OR ACCESSORIES

F01C 21/00

Rotary-piston machines or engines (with axes of co-operating members non-parallel F01C 3/00; with the working-chamber walls at least partly resiliently deformable F01C 5/00; with fluid ring or the like F01C 7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B 13/00)

Note

Group F01C 1/30 takes precedence over groups F01C 1/02 to F01C 1/28.

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

of internal-axis type

of other than internal-axis type (F01C 1/063 takes precedence)

063

with coaxially-mounted members having continuously-changing circumferential spacing between them [3]

067

having cam-and-follower type drive [3]

having crankshaft-and-connecting-rod type drive [3]

073

having pawl-and-ratchet type drive [3]

077

having toothed-gearing type drive [3]

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

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

107

with helical teeth [3]

113

the inner member carrying rollers intermeshing with the outer member [3]

of other than internal-axis type

with toothed rotary pistons

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

with similar tooth forms (F01C 1/16 takes precedence)

with dissimilar tooth forms (F01C 1/16 takes precedence)

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

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

of internal-axis type

of other than internal-axis type

having the characteristics covered by two or more of groups F01C 1/02, F01C 1/08, F01C 1/22, F01C 1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members

having both the movement defined in group F01C 1/02 and relative reciprocation between the co-operating members

324

with vanes hinged to the inner member and reciprocating with respect to the outer member [3]

328

and hinged to the outer member [3]

332

with vanes hinged to the outer member and reciprocating with respect to the inner member [3]

336

and hinged to the inner member [3]

having the movement defined in group F01C 1/08 or F01C 1/22 and relative reciprocation between the co-operating members

344

with vanes reciprocating with respect to the inner member [3]

348

the vanes positively engaging, with circumferential play, an outer rotatable member [3]

352

the vanes being pivoted on the axis of the outer member [3]

356

with vanes reciprocating with respect to the outer member [3]

having both the movements defined in groups F01C 1/22 and F01C 1/24

having the movement defined in group F01C 1/02 and having a hinged member (F01C 1/32 takes precedence) [3]

with vanes hinged to the inner as well as to the outer member [3]

having the movement defined in group F01C 1/08 or F01C 1/22 and having a hinged member

with vanes hinged to the inner member [3]

with vanes hinged to the outer member [3]

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 F01C 5/00)

the axes being arranged at an angle of 90°

with axially-sliding vanes

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

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

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

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

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

the resiliently-deformable wall being a separate member

of tubular form, e.g. hose

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

Oscillating-piston machines or engines

11/

Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type (F01C 13/00 takes precedence; combinations of two or more pumps F04; fluid gearing F16H)

13/

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)

13/

for driving hand-held tools or the like

13/

for driving pumps or compressors

17/

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

17/

of toothed-gearing type (F01C 1/077 takes precedence) [3]

17/

of cam-and-follower type (F01C 1/067 takes precedence) [3]

17/

using cranks, universal joints, or similar elements (F01C 1/07 takes precedence) [3]

19/

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

19/

Radially-movable sealings for working fluids

19/

of rigid material

19/

of resilient material

19/

Axially-movable sealings for working fluids

19/

Sealings for working fluids between radially and axially movable parts

19/

for other than working fluid

21/

Component parts, details, or accessories, not provided for in, or of interest apart from, other groups

21/

Arrangements of bearings (bearing constructions F16C)

21/

Lubrication (of machines or engines in general F01M)

21/

Heating; Cooling (of machines or engines in general F01P); Heat insulation (heat insulation in general F16L)

21/

Rotary pistons (reciprocating pistons in general F16J)

21/

Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M)

21/

Control of working-fluid admission or discharge (suitable for more general application F01L)

21/

for variable fluid distribution

21/

Other regulation or control