An ornamentaldesign for a portable hanging device, as shown and described.
FIG. 1 is a front prospective view of a portable hanging device in an environment of use, where the portable hanging device is shown reduced in scale.
FIG. 2 is a rear perspective view of the portable hanging device shown in FIG. 1.
FIG. 3 is a front view of the portable hanging device of FIG. 2.
FIG. 4 is a rear view of the portable hanging device of FIG. 2.
FIG. 5 is a top view of the portable hanging device of FIG. 2.
FIG. 6 is a bottom view of the portable hanging device of FIG. 2.
FIG. 7 is a right side view of the portable hanging device of FIG. 2; and,
FIG. 8 is a left side view of the portable hanging device of FIG. 2.
The elements (e.g. the article and the support unit) shown in broken lines in FIG. 1 are for illustrative purposes only to disclose the environment related to the claimed design, and forms no part of the claimed design.