Brushing – scrubbing – and general cleaning – Machines – Scraping
Patent
1993-01-15
1994-11-01
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Scraping
1510404, 29 811, B08B 902
Patent
active
053597486
ABSTRACT:
The present invention includes a self-propelled-carriage assembly which is mounted on a pipeline for removing deteriorated coating formed thereon. The self-propelled carriage assembly includes a frame having first and second sections. The first section is positioned above and detachably connected to the second section to facilitate placement on and removal from the pipeline. Front and rear rollers are attached to the upper section of the frame for supporting the carriage assembly for movement along the pipeline. A motor is operably associated with at least one of the front and rear rollers for driving the same. A first drive pulley or sprocket is mounted on the upper portion of the frame such that when the carriage is positioned on the pipeline the first pulley is disposed above the pipeline. A second drive pulley or sprocket is mounted on the lower portion of the frame such that when the carriage is positioned on the pipeline the second pulley is disposed below the pipeline. The first pulley is offset from the second pulley along the longitudinal axis of the pipeline. A first endless flexible member travels under the outer surface of the pipeline and over first pulley at a high speed to remove the deteriorated protective coating from the pipeline. A second endless flexible member passes over the outer surface of the pipeline and under the second pulley.
REFERENCES:
patent: 2025337 (1935-12-01), Camden et al.
patent: 2641008 (1953-06-01), Smith
patent: 2779363 (1957-01-01), Laughton
patent: 5001801 (1991-03-01), Jarvis et al.
Pipeline Rehab, Inc.
Roberts Edward L.
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