IPC Subgroup
F01B 3/1 Control of working-fluid admission or discharge peculiar thereto
Introduced: September 1968
Last revised: January 2006
Full Title
Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis > Control of working-fluid admission or discharge peculiar thereto
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- Subclass:
- MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES