Trapezoidal sleeve for articulated piston has butt-joint which is positioned so that it is not on narrowest or widest section of sleeve, nor on axial lines which are equidistant from them

摘要

The trapezoidal sleeve for an articulated piston has a butt-joint (25). This is positioned so that it is not on the narrowest (21) or widest (22) section of the sleeve, nor on the axial lines (28, 29) which are equidistant from the narrowest and widest sections.