Importance

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Abstract

A vibration damping mechanism for utility poles includes a cylindrical hollow tube including a sidewall having outer and inner side surfaces. The inner side surface forms an elongated inner chamber defining a longitudinal axis and having longitudinally spaced upper and lower ends. An unrestricted cylindrical rod disposed in the chamber is capable of limited movement in the chamber to damp oscillations. A section of the tube's sidewall is flat to form vertical flats along the outer and inner side surfaces. Formed portions of the sidewall disposed at respective upper and lower ends of the chamber are bent inwardly to extend across, and close, the upper and lower chamber ends, respectively. The lower one of the formed portions is shaped to define a raised pivot engaging a bottom face of the rod at a location laterally inwardly of the rod's outer side face.

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First Claim