IPC 6 English version  Class F01
SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
ENGINES OR PUMPS

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)

F 01 C

ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (internal-combustion aspects F 02 B 53/00, F 02 B 55/00)

F 01 D

NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F 03; non-positive-displacement pumps F 04 D)

F 01 K

STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F 02; steam generation F 22; nuclear power plants, engine arrangements therein G 21 D)

F 01 L

CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES (valves in general F 16 K)

F 01 M

LUBRICATING OF MACHINES OR ENGINES IN GENERAL (lubricating in general F 16 N); LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING [2]

F 01 N

GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B 60 K 13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F 02 M 35/00; protecting against, or damping, noise in general G 10 K 11/16)

F 01 P

COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B 60 K 11/00; heat exchange in general, radiators F 28)
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