Worm gear adjuster

FIG. 1 is a front perspective view of the worm gear adjuster disposed on a headband;

FIG. 2 is a front perspective view of the worm gear adjuster disposed on a helmet;

FIG. 3 is a front side view of the worm gear adjuster;

FIG. 4 is a rear side view of the worm gear adjuster;

FIG. 5 is a bottom view of the worm gear adjuster;

FIG. 6 is a top view of the worm gear adjuster;

FIG. 7 is a right side view of the worm gear adjuster; and,

FIG. 8 is a left side view of the worm gear adjuster.

The headband, the helmet, and certain features of the worm gear adjuster are shown in broken lines for illustrative purposes only and form no part of the claimed design.