We claim the ornamental design for a mixing drum, as shown and described.
FIG. 1 is a front perspective view of a mixing drum showing our new design;
FIG. 2 is a front view of the embodiment of FIG. 1;
FIG. 3 is a rear view of the embodiment of FIG. 1;
FIG. 4 is a left side view of the embodiment of FIG. 1;
FIG. 5 is a right side view of the embodiment of FIG. 1;
FIG. 6 is a top view of the embodiment of FIG. 1;
FIG. 7 is a bottom view of the embodiment of FIG. 1; and,
FIG. 8 is a side sectional view of the embodiment of FIG. 1 taken along line 8-8.
The ornamental design which is claimed is shown in solid lines in the figures. Broken lines are for illustrative purposes only and form no part of the claimed design. Broken lines formed by equal length dashes show unclaimed portions of the design. Broken lines formed of unequal length dashes (i.e. dash-dot) show boundaries between claimed and unclaimed portions of the design. Broken lines having a jagged element show that no particular length of the portion is claimed.
While the accompanying drawings illustrate one or more exemplary embodiments, it should be understood that, according to other exemplary embodiments that should be considered to be within the possession of the inventors of the present application at the time this application is being filed, it is contemplated that any illustrated solid lines (or portions thereof) may be converted to broken lines and that any illustrated broken lines (or portions thereof) may be converted to solid lines so as to claim or disclaim portions, components, or sub-components of the designs shown. It is further contemplated that shading may be added or removed to claim or disclaim the corresponding surfaces.