the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve

Full Title

Valve-gear or valve arrangements actuated non-mechanically > by fluid means, e.g. hydraulic > in which the action of a cam is being transmitted to a valve by a liquid column > with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem > the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve

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