The ornamental design for a respiratorheadcradle, as shown and described.
FIG. 1 is a perspective view of a second embodiment of a new design for a respirator head cradle;
FIG. 2 is a top view of the second embodiment;
FIG. 3 is a back view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a left side view thereof, the right side view being a mirror image of the left side view; and,
FIG. 6 is a front view thereof.
The broken lines in the drawings are included for the purpose of illustrating portions of the respirator head cradle that form no part of the claimed design.