Arm for a task chair

FIG. 1 is an isometric view illustrating a chair arm incorporating my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof, the right side elevation being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines in FIGS. 1 through 5 are for illustrative purposes and the broken lines at the lower end of the arm form the boundary of the design. None of the broken lines are part of the claimed design.