CYLINDER-PISTON DEVICE

摘要

A cylinder-piston device including a cylinder having an axis, two end walls and a cavity defined within said cylinder. An axially movable piston rod extends into the cavity through an aperture in at least one of said end walls and a piston unit within said cavity connects with the piston rod to define two working chambers within said cavity. A fluid is included within the cavity and a passage extends through the piston to connect the working chambers during at least part of the stroke of the piston's movement with respect to the cylinder.