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IPC 7
F01C-F01C02116

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


F 01MACHINES OR ENGINES IN GENERAL (combustion engines F02; machines for liquids F03, F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES


F 01 CROTARY-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 



1/

00Rotary-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.

1/

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

1/

04..of internal-axis type

1/

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

1/

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

1/

067...having cam-and-follower type drive  [3]

1/

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

1/

073...having pawl-and-ratchet type drive  [3]

1/

077...having toothed-gearing type drive  [3]

1/

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

1/

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

1/

107...with helical teeth  [3]

1/

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

1/

12..of other than internal-axis type

1/

14...with toothed rotary pistons

1/

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

1/

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

1/

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

1/

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

1/

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

1/

26..of internal-axis type

1/

28..of other than internal-axis type

1/

30.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

1/

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

1/

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

1/

328....and hinged to the outer member  [3]

1/

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

1/

336....and hinged to the inner member  [3]

1/

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

1/

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

1/

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

1/

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

1/

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

1/

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

1/

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

1/

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

1/

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

1/

44...with vanes hinged to the inner member  [3]

1/

46...with vanes hinged to the outer member  [3]


3/

00Rotary-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)

3/

02.the axes being arranged at an angle of 90°

3/

04..with axially-sliding vanes

3/

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

3/

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


5/

00Rotary-piston machines or engines with the working-chamber walls at least partly resiliently deformable

5/

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

5/

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

5/

06.the resiliently-deformable wall being a separate member

5/

08..of tubular form, e.g. hose


7/

00Rotary-piston machines or engines with fluid ring or the like


9/

00Oscillating-piston machines or engines


11/

00Combinations 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/

00Adaptations 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/

02.for driving hand-held tools or the like

13/

04.for driving pumps or compressors


17/

00Arrangements for drive of co-operating members, e.g. for rotary piston and casing

17/

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

17/

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

17/

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


19/

00Sealing arrangements in rotary-piston machines or engines (sealings in general F16J)

19/

02.Radially-movable sealings for working fluids

19/

04..of rigid material

19/

06..of resilient material

19/

08.Axially-movable sealings for working fluids

19/

10.Sealings for working fluids between radially and axially movable parts

19/

12.for other than working fluid


21/

00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups

21/

02.Arrangements of bearings (bearing constructions F16C)

21/

04.Lubrication (of machines or engines in general F01M)

21/

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

21/

08.Rotary pistons (reciprocating pistons in general F16J)

21/

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

21/

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

21/

14..for variable fluid distribution

21/

16.Other regulation or control


  
 

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