We claim the ornamental design for a coupling device for vehicle rack, as shown and described.
FIG. 1 is a perspective view of a coupling device for vehicle rack constructed in accordance with the present invention.
FIG. 2 is a top plan view thereof.
FIG. 3 is a bottom plan view thereof.
FIG. 4 is a rear side elevation view thereof.
FIG. 5 is a front side elevation view thereof.
FIG. 6 is a right elevation view thereof; and,
FIG. 7 is a left elevation view thereof.
The dashed line(s) shown in the drawings are for illustrative purposes only and form no part of the claimed design.
The stippling and shading lines shown in the drawing(s) represent the approximate three-dimensional contour of the design, and are not intended to indicate surface decoration.
Portions of the coupling device for vehicle rack that are not shown in the drawing(s) form no part of the claimed design.