The tire secured external armor is held to the tire by rings of smaller diameter than the tire tread which rings are not secured to the wheel or tire but extend about the wheel at each side of the tread with the armor attached thereto. The ring may be sectional but does not include any part of the armor. This subclass includes rings consisting entirely of chain.
(1) Note. For the securing means, see this class, subclasses 172, 177, 179, 184, 191, 225, and indented subclasses, and 242.
