F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type F01C; of non-positive-displacement type F01D; internal-combustion engines F02B; combustion-product engine plants F02G; machines or engines, other than of positive-displacement type, for liquids F03B; positive-displacement engines driven by liquids F03C; wind motors F03D; positive-displacement machines for liquids F04B; rotary-piston, or oscillating-piston, positive-displacement machines for liquids F04C)
Introduced: September 1968
Description
F01B encompasses machines and engines operating on positive-displacement principles, where a fixed volume of fluid is trapped and displaced in each cycle to produce work. This subclass covers steam engines, reciprocating engines, rotary positive-displacement machines, and other mechanisms where displacement is the primary operating characteristic. The classification includes piston engines, rotary vane machines, screw compressors operating in reverse as expanders, and similar devices that rely on mechanical displacement rather than dynamic pressure principles. F01B excludes dynamic machines (turbines, centrifugal compressors) and internal combustion engines with spark or compression ignition, which are classified elsewhere.
Title
Titles differ between systems:
IPC: MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
CPC: MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type F01C; of non-positive-displacement type F01D; internal-combustion engines F02B; combustion-product engine plants F02G; machines or engines, other than of positive-displacement type, for liquids F03B; positive-displacement engines driven by liquids F03C; wind motors F03D; positive-displacement machines for liquids F04B; rotary-piston, or oscillating-piston, positive-displacement machines for liquids F04C)
Full Title
Full titles differ between systems:
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type F01C; of non-positive-displacement type F01D; internal-combustion engines F02B; combustion-product engine plants F02G; machines or engines, other than of positive-displacement type, for liquids F03B; positive-displacement engines driven by liquids F03C; wind motors F03D; positive-displacement machines for liquids F04B; rotary-piston, or oscillating-piston, positive-displacement machines for liquids F04C)
Of 18 combined children, 16 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
8 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F01B 1/00 Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements (F01B3/00, F01B5/00 take precedence) IPC+CPC Available in IPC and CPC
- F01B 11/00 Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type +4 CPC IPC+CPC Available in IPC and CPC
- F01B 13/00 Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion IPC+CPC Available in IPC and CPC
- F01B 15/00 Reciprocating-piston machines or engines with movable cylinders other than provided for in group F01B13/00 +3 CPC IPC+CPC Available in IPC and CPC
- F01B 17/00 Reciprocating-piston machines or engines characterised by use of uniflow principle IPC+CPC Available in IPC and CPC
- F01B 19/00 Positive-displacement machines or engines of flexible-wall type IPC+CPC Available in IPC and CPC
- F01B 21/00 Combinations of two or more machines or engines (F01B23/00 takes precedence) IPC+CPC Available in IPC and CPC
- F01B 2250/00 Accessories of steam engines; Arrangements or control devices of piston pumps, compressors without crank shafts or condensors for so far as they influence the functioning of the engines 2nd only +9 CPC CPC only CPC only
- F01B 23/00 Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby IPC+CPC Available in IPC and CPC
- F01B 25/00 Regulating, controlling or safety means (controlling combustion engines F02D) IPC+CPC Available in IPC and CPC
- F01B 27/00 Starting of machines or engines (starting combustion engines F02N) IPC+CPC Available in IPC and CPC
- F01B 29/00 Machines or engines with pertinent characteristics other than those provided for in preceding main groups IPC+CPC Available in IPC and CPC
- F01B 3/00 Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis +4 CPC IPC+CPC Available in IPC and CPC
- F01B 31/00 Component parts, details or accessories not provided for in, or of interest apart from, other groups +1 CPC IPC+CPC Available in IPC and CPC
- F01B 5/00 Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis +2 CPC IPC+CPC Available in IPC and CPC
- F01B 7/00 Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft F01B1/08) IPC+CPC Available in IPC and CPC
- F01B 9/00 Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00 IPC+CPC Available in IPC and CPC