Portable Drinking Device

FIG. 1 is a left, front perspective view of embodiment one of a portable drinking device, shown in environmental use, showing my new design; FIG. 2 is a front view thereof; FIG. 3 is a rear view thereof; FIG. 4 is a right-side view thereof; FIG. 5 is a left-side view thereof; FIG. 6 is a top view thereof; FIG. 7 is a bottom view thereof; FIG. 8 is a left, front perspective view of embodiment two of a portable drinking device, shown in environmental use, showing my new design; FIG. 9 is a front view thereof; FIG. 10 is a rear view thereof; FIG. 11 is a right-side view thereof; FIG. 12 is a left-side view thereof; FIG. 13 is a top view thereof; and, FIG. 14 is a bottom view thereof. The broken lines in FIGS. 6 , 7 , 13 and 14 show portions of the drinking device and form no part of the claimed design. The broken lines forming the can in FIGS. 1 and 8 are for the purpose of illustrating environment only and form no part of the claimed design. The dot-dash boundary lines of FIGS. 7 and 14 immediately adjacent to the claimed areas represent the boundaries of the design and form no part thereof. None of the broken lines form any part of the claimed design.