Speed reducer

[0001]FIG. 1 is a top perspective view of a speed reducer, showing our new design.

[0002]FIG. 2 is a bottom perspective view thereof.

[0003]FIG. 3 is a front view thereof.

[0004]FIG. 4 is a rear view thereof.

[0005]FIG. 5 is a top view thereof.

[0006]FIG. 6 is a bottom view thereof.

[0007]FIG. 7 is a left side view thereof; and,

[0008]FIG. 8 is a right side view thereof.

[0009]The broken lines shown in the drawings illustrate portions of the speed reducer that form no part of the claimed design.