The ornamental design of a feature of a foot of an uprightvacuumcleaner, as shown and described.
FIG. 1 is a top, front perspective view of a feature of a foot of an upright vacuum cleaner showing my new design;
FIG. 2 is a top elevational view thereof;
FIG. 3 is a front elevational view thereof; and,
FIG. 4 is a cross-sectional view taken along line 4—4 in FIG. 1.
The broken lines in FIGS. 1-3 showing the foot of an upright vacuum and associated details are for illustrative purposes only and form no part of the claimed design.