The dash-dot rectangle located within certain locations of the pipe is included to indicate an enlarged view of the claimed area of the pipe only and forms no part of the claimed design. The remaining dash-dot broken lines represent unclaimed boundaries of the claimed design.
The broken lines immediately adjacent to shaded areas represent unclaimed boundaries of the claimed design.
The pipe with alternating sections is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claim.
The remainder of the pipe shown in broken lines is for environmental purposes only and forms no part of the claimed design.