IPC Subgroup
F01B 31/22 Idling devices, e.g. having by-passing valves
Introduced: September 1968
Last revised: January 2006
Full Title
Component parts, details or accessories not provided for in, or of interest apart from, other groups > Idling devices, e.g. having by-passing valves
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
1 direct subcode
Child Classifications
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- F01B 31/24 Disengagement of connections between pistons and main shafts