. "4B is a sectional view similar to that of FIG. 24A showing yet another type of inner shield part; [0061]FIG. 24C is a sectional view similar to that of FIG. 24A showing yet another type of inner shield part; [0062]FIG. 25 is a perspective view of an adaptation of an inner shield part made in accordance with an aspect of the present invention; [0063]FIG. 26 is a perspective view of another adaptati" . . .