by changing the form of the inner or outer contour of the working chamber

Full Title

Control of, monitoring of, or safety arrangements for, machines or engines > characterised by varying the volume of the working chamber > by changing the form of the inner or outer contour of the working chamber

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES

Subclass:

ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES