Method and device for applying protective sheeting of polymer material to a pipeline
AssigneeSaipem S.P.A.
InventorValerio Bregonzio
Life of this patent
Estimating the term…
Abstract
A method of applying protective sheeting of polymer material to a pipeline, the method including the steps of advancing a carriage along an annular path extending about the longitudinal axis of the pipeline; extruding the protective sheeting on the carriage; winding the protective sheeting, as the protective sheeting is extruded, about a cutback on the pipeline; and plastifying the polymer material on board the carriage.
Claims29
1-26. (canceled)
A method of applying protective sheeting to a pipeline, the method comprising:
- advancing a carriage along an annular path extending about a longitudinal axis of the pipeline;
- plastifying a polymer material on board the carriage;
- on the carriage, extruding the plastified polymer material into a protective sheeting;
- and
- as the protective sheeting is extruded, winding the protective sheeting about a cutback on the pipeline.
The method of claim 39, which includes initiating the winding of the protective sheeting about the cutback when the initial portion of the protective sheeting is gripped between the pipeline and the roller.
A polymer material protective sheeting application device comprising:
- a carriage configured to move along an annular path extending about a longitudinal axis of a pipeline, said carnage configured to apply a protective sheeting to a cutback on a pipeline;
- and
- a plastifying and extrusion assembly mounted on the carriage and configured to:
- plastify a polymer material from which the protective sheeting is made, and
- extrude the protective sheeting on board the carriage.
Dependencies are inferred from the claim text.