Hinged coupling

FIG. 1 is an isometric view of our design for a hinged coupling;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a left side rear view thereof with the right side view being a mirror image thereof.

The broken lines depict portions of the hinged coupling that form no part of the claimed design.