Surface Treatment Device for Large Diameter Pipe Sections

Author:  Raymond M. Leliaert
Source:  US Patent 4,016,681
Doc ID:  1977018
Year of Publication:  1977
Abstract:  
A surface treatment device is disclosed which is capable of efecting surface treatment of the inside and outside of large diameter pipi sections. The device preferably employs an airless centrifugal blast wheel mounted on a support arm which is extensible into and out of the interior pipe section or, alternatively, along the exterior of the pipe section. the support arm contains the necessary power cables and ducts to connect the blast head to a dust collector and contro panel. the pipe section is rotated on a motorized roller bed.