IPC 6 English version F01B !A-F01B 31/36

F-F01B03136

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

F 01

MACHINES OR ENGINES IN GENERAL (combustion engines F 02; machines for liquids F 03, F 04); ENGINE PLANTS IN GENERAL; STEAM ENGINES

F 01 B

MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type F 01 C; of non-positive-displacement type F 01 D; internal-combustion aspects of reciprocating-piston engines F 02 B 57/00, F 02 B 59/00; crankshafts, crossheads, connecting-rods F 16 C; flywheels F 16 F; gearings for interconverting rotary motion and reciprocating motion in general F 16 H; pistons, piston-rods, cylinders, for engines in general F 16 J)

Notes

(1)

This subclass covers, with the exception of the matter provided for in subclasses F 01 C to F 01 P :

–

engines for elastic fluids, e.g. steam engines;

–

engines for liquids and elastic fluids;

–

machines for elastic fluids;

–

machines for liquids and elastic fluids.

(2)

Attention is drawn to the Notes preceding class F 01, especially as regards the definitions of "steam" and "special vapour".

Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements (F 01 B 3/00, F 01 B 5/00 take precedence) [2]

with one single cylinder [2]

with cylinders all in one line

with cylinders in V-arrangement

with cylinders in star or fan arrangement

with cylinders arranged oppositely relative to main shaft and of "flat" type

with more than one main shaft, e.g. coupled to common output shaft (combinations of two or more machines or engines F 01 B 21/00)

Separate cylinder-crankcase elements coupled together to form a unit

Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis

with wobble-plate

the piston motion being transmitted by curved surfaces

by multi-turn helical surfaces and automatic reversal

the helices being arranged on the pistons

Control of working-fluid admission or discharge peculiar thereto (suitable for more general application F 01 L)

Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis

Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft F 01 B 1/08)

with oppositely reciprocating pistons

acting on same main shaft

using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa

with side rods

having piston-rod of one piston passed through other piston

using rockers and connecting-rods

acting on different main shafts

with pistons synchronously moving in tandem arrangement

with differential piston (F 01 B 7/20 takes precedence)

with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other

Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups (connections disengageable during idling F 01 B 31/24)

with crankshaft

with rotary main shaft other than crankshaft

the piston motion being transmitted by curved surfaces

with ratchet and pawl

11/

Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type

11/

Equalising or cushioning devices

11/

Engines combined with reciprocatory driven devices, e.g. hammers (with pumps F 01 B 23/08; predominating aspects of driven devices, see the relevant classes for the devices)

11/

for generating vibration only

11/

with direct fluid transmission link (F 01 B 11/02 takes precedence)

13/

Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion (machines or engines of flexible-wall type F 01 B 19/00) [2]

13/

with one cylinder only

13/

with more than one cylinder

13/

in star arrangement

15/

Reciprocating-piston machines or engines with movable cylinders other than provided for in group F 01 B 13/00 (with movable cylinder sleeves for working-fluid control F 01 L)

15/

with reciprocating cylinders (with one piston within another F 01 B 7/20)

15/

with oscillating cylinder

15/

Control of working-fluid admission or discharge peculiar thereto

17/

Reciprocating-piston machines or engines characterised by use of uniflow principle

17/

Engines

17/

Steam engines

19/

Positive-displacement machines or engines of flexible-wall type

19/

with plate-like flexible members

19/

with tubular flexible members

21/

Combinations of two or more machines or engines (F 01 B 23/00 takes precedence; combinations of two or more pumps F 04; fluid gearing F 16 H; regulating or controlling, see the relevant groups)

21/

the machines or engines being all of reciprocating-piston type

21/

the machines or engines being not all of reciprocating-piston type, e.g. of reciprocating steam engine with steam turbine

23/

Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby (F 01 B 11/00 takes precedence; fluid gearing F 16 H; aspects predominantly concerning driven devices, see the relevant classes for these devices; regulating or controlling, see the relevant groups)

23/

Adaptations for driving vehicles, e.g. locomotives (arrangements in vehicles, see the relevant classes for vehicles)

23/

the vehicles being waterborne vessels

23/

Adaptations for driving, or combinations with, hand-held tools or the like

23/

Adaptations for driving, or combinations with, pumps

23/

Adaptations for driving, or combinations with, electric generators

23/

Adaptations for driving rolling mills or other heavy reversing machinery

25/

Regulating, controlling, or safety means (regulating or controlling in general G 05)

25/

Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity (distributing or expansion valve gear F 01 L)

25/

Sensing elements

25/

responsive to speed

25/

Final actuators

25/

Arrangements or adaptations of working-fluid admission or discharge valves (valves in general F 16 K)

25/

Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F 01 B 25/04; final actuators alone F 01 B 25/08)

25/

peculiar to particular kinds of machines or engines

25/

Safety means responsive to specific conditions (against water hammer or the like in steam engines F 01 B 31/34)

25/

preventing rotation in wrong direction

25/

Checking operation of safety devices

25/

Braking by redirecting working fluid

25/

thereby regenerating energy

25/

Warning devices

27/

Starting of machines or engines (starting combustion engines F 02 N)

27/

of reciprocating-piston engines

27/

by directing working-fluid supply, e.g. by aid of by-pass steam conduits

27/

specially for compound engines

27/

Means for moving crank off dead-centre (turning-gear in general F 16 H)

29/

Machines or engines with pertinent characteristics other than those provided for in preceding main groups

29/

Atmospheric engines, i.e. atmosphere acting against vacuum

29/

characterised by means for converting from one type to a different one

29/

from steam engine into combustion engine

29/

Reciprocating-piston machines or engines not otherwise provided for

29/

Engines (refrigeration machines F 25 B)

29/

Steam engines (toy steam engines A 63 H 25/00)

31/

Component parts, details, or accessories not provided for in, or of interest apart from, other groups (machine or engine casings, other than those peculiar to steam engines, F 16 M)

31/

De-icing means for engines having icing phenomena

31/

Means for equalising torque in reciprocating-piston machines or engines (compensation of inertial forces, suppression of vibration in systems F 16 F)

31/

Means for compensating relative expansion of component parts

31/

Cooling of steam engines (cooling of fluid machines or engines in general F 01 P); Heating; Heat insulation (heat insulation in general F 16 L 59/00)

31/

Lubricating arrangements of steam engines (of fluid machines or engines in general F 01 M)

31/

Arrangements of measuring or indicating devices (warning apparatus F 01 B 25/26; measuring instruments or the like per se G 01)

31/

Changing of compression ratio

31/

Silencers specially adapted for steam engines (arrangements of exhaust pipes or tubes on steam engines F 01 B 31/30; gas-flow silencers or exhaust silencers for machines or engines in general F 01 N)

31/

Draining

31/

of cylinders

31/

Idling devices, e.g. having by-passing valves

31/

Disengagement of connections between pistons and main shafts

31/

Other component parts, details, or accessories, peculiar to steam engines

31/

Cylinders or cylinder covers

31/

Arrangements of steam conduits

31/

Arrangements or adaptations of vacuum breakers

31/

Safety means against water hammer or against the penetration of water (steam traps F 16 T)

31/

automatically cutting-off steam supply