The color(s) red, yellow, black and white is/are claimed as a feature of the mark.
"TRAILER" and "CORPORATION"
The mark consists of three concentric rings comprising the general shape of a tire, the outermost being thin and yellow, the second being a wide black ring, and the third being a thin white ring, all such rings surrounding a yellow circle, with the words "CARRY-ON" and "CORPORATION" in yellow respectively within the upper and lower portions of the black ring, and with a horizontal red bar crossing the rings at their midpoint with the word "TRAILER" in white thereon, such bar extending on the right to include a trailer coupler also in red.