Directed Gas Flow Sheath

FIG. 1 is a bottom, front, right perspective view of a directed gas flow sheath, showing our new design. FIG. 2 is a top, rear, left perspective view thereof. FIG. 3 is a bottom, front perspective view thereof. FIG. 4 is a right side elevation view thereof. FIG. 5 is a left side elevation view thereof. FIG. 6 is a top plan view thereof. FIG. 7 is a bottom plan view thereof. FIG. 8 is a front elevation view thereof. FIG. 9 is a rear elevation view thereof; and, FIG. 10 is a front elevation view of detail 10 , identified in FIG. 8 . The broken lines in the drawings illustrate portions of the directed gas flow sheath, which form no part of the claimed design. The directed gas flow sheath is shown with symbolic breaks in its length. The appearance of any portion of the directed gas flow sheath between the break lines forms no part of the claimed design.