The broken lines showing the opposing coupling and pin illustrate the environment of the claimed design and form no part of the claimed design. The remaining evenly spaced broken lines in the drawings illustrate portions of the coupling and form no part of the claimed design. The dot-dash-dot broken lines in the drawings define the bounds of the claim and form no part thereof.
The dot-dash-dot broken lines in the drawings define the boundary of the claim and form no part thereof.