Core bar for rubber crawler

A core bar for embedding in a main body of a rubber crawler having a tread side, wherein the main body is made of a rubber elastic body, wherein the core bar has a length, a width, a height, an engagement part for engaging with a driving unit of a traveling device, wing parts extending longitudinally from the engagement part and having enlarged width parts, wherein the core bar has a width dimension that lies between the wing parts and the longitudinal center of the core bar, wherein the enlarged width parts are formed by extending the wing parts of the core bar in the width direction of the core bar to beyond the width dimension of the core bar along the entire length of the enlargement width part, whereby cracks are prevented in the rubber crawler adjacent to the longitudinal end parts, wherein each enlargement width part has a height equal to the minimum height of the wing part, and wherein the enlargement width parts are adapted to be embedded entirely in the main body of a rubber crawler.

A core bar for embedding in a main body of a rubber crawler having a tread side, wherein the main body is made of a rubber elastic body, wherein the core bar has a length, a width, a height, wing parts, and enlarged width parts, wherein the core bar has a width dimension that lies between the wing parts and the longitudinal center of the core bar, wherein each of the enlarged width parts has an inclination facing a tread side of the crawler and a height equal to the minimum height of the wing part, and wherein the enlarged width parts are formed by extending the wing parts of the core bar in the width direction of the core bar to beyond the width dimension of the core bar along the entire length of the enlargement width part.

In combination, a rubber crawler and a core bar for embedding in the rubber crawler,

• wherein the rubber crawler has a rubber elastic main body and a tread side, and
• wherein the core bar has a length, a width, a height, an engagement part for engaging with a driving unit of a traveling device, wing parts extending longitudinally from the engagement part and having enlarged width parts, wherein the core bar has a width dimension that lies between the wing parts and the longitudinal center of the core bar, wherein the enlarged width parts are formed by extending the wing parts of the core bar in the width direction of the core bar to beyond the width dimension of the core bar along the entire length of the enlargement width part, whereby cracks are prevented in the rubber crawler adjacent to the wing parts, wherein each enlargement width part has a height equal to the minimum height of the wing part, and wherein the enlargement width parts are embedded entirely in the main body of a rubber crawler.