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IPC Main Group
F01L 27/00

Distribution or expansion-valve gear peculiar to free-piston machines or engines and not provided for in groups

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
Subclass:
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

2 direct subcodes

Child Classifications

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  • F01L 27/02 the machine or engine having rotary or oscillatory valves
  • F01L 27/04 Delayed-action controls, e.g. of cataract- or dash-pot-type