Use of working pistons or piston-rods as fluid-distributing valves or as valve-supporting elements, e.g. in free-piston machines

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

Child Classifications

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• F01L 21/02 Piston or piston-rod used as valve member
• F01L 21/04 Valves arranged in or on piston or piston-rod