The ornamental design for a socket for a roboticarm, as shown and described.
FIG. 1 is a perspective view of an embodiment of a socket for a robotic arm showing our new design.
FIG. 2 is a front view of the socket for a robotic arm of FIG. 1.
FIG. 3 is a left perspective view of the socket for a robotic arm of FIG. 1.
FIG. 4 is a right perspective view of the socket for a robotic arm of FIG. 1.
FIG. 5 is a bottom perspective view of the socket for a robotic arm of FIG. 1; and,
FIG. 6 is a top perspective view of the socket for a robotic arm of FIG. 1.
The socket for a robotic arm in FIGS. 1-6 includes broken lines depicting environmental or unclaimed portions of the socket for a robotic arm that form no part of the claimed design.