Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1987-08-21
1989-11-14
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
1510404, 294264, 125 14, 125 23R, 225103, 405154, 405188, 405191, 30 94, F16L 100
Patent
active
048803359
ABSTRACT:
An apparatus having improved safety and performance characteristics for the removal of a coating from a tubular member, and particularly adapted for the removal of a concrete weight coat from submerged oil pipelines, comprising a generally C-shaped rigid frame member which is maintained in proper alignment by contact with the upper coated surface, is provided with a plurality of opposed, inwardly directed driven crusher blades located proximate the ends of the frame member and controlled driving means which are adapted to move the crusher blades. The method comprises positioning the apparatus on the coated pipeline, crushing the coating, raising the entire apparatus to free the fractured coating from the pipeline, retracting the crusher blades, and moving the apparatus to a new position on the pipeline.
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Arabian American Oil Company
Spath Thomas E.
Taylor Dennis L.
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