The ornamental design for an anti-impalement device, as shown and described.
FIG. 1 is a top perspective view of an anti-impalement device showing my new design having indeterminate length and width;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a left side elevation view thereof; the right side being a mirror image thereof;
FIG. 4 is a front elevation view thereof; the rear being a mirror image thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a cross section taken along lines 7-7 of FIG. 5; and,
FIG. 8 shows a bottom perspective view of an anti-impalement device shown in an environment.
The broken lines illustrate portions of the anti-impalement device that form no part of the claimed design as well as symbolic break lines. The broken lines in FIG. 8 also depict environment that forms no part of the claimed design. The anti-impalement device is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.