Speed reducer

FIG. 1 is a front view of a first embodiment of a speed reducer of the present invention.

FIG. 2 is a rear view of the speed reducer of FIG. 1 .

FIG. 3 is a top plan view of the speed reducer of FIG. 1 .

FIG. 4 is a bottom plan view of the speed reducer of FIG. 1 .

FIG. 5 is a right side view of the speed reducer of FIG. 1 .

FIG. 6 is a left side view of the speed reducer of FIG. 1 .

FIG. 7 is a front, top plan and right side perspective view of the speed reducer of FIG. 1 ; and,

FIG. 8 is a rear, bottom plan and left side perspective view of the speed reducer of FIG. 1 .

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design.