Tread portion of an automobile tire

FIG. 1 is a perspective view of a tread portion of an automobile tire;

FIG. 2 is a front view thereof;

FIG. 3 is a plane view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a fragmentary enlarged view showing the details of the tread portion thereof;

FIG. 6 is an end view taken along line 6 - 6 in FIG. 5 ; and,

FIG. 7 is an end view taken along line 7 - 7 in FIG. 5 .

Broken lines in the drawing figures are used to show environmental structure as well as a boundary between the claimed and unclaimed subject matter, and thus form no part of the claimed invention.