Back to results
US 5,671,953 AGranted
Pipe end fittings
AssigneesRoderick Charles Brewis, Pipe Equipment Specialists Limited
InventorsRoderick Charles Brewis, Steven James Kent
Life of this patent
Estimating the term…
Abstract
An end fitting, particularly a pipe towing head, has an expandable element (44; 144) that is surrounded by a skirt (18) of a tubular body (14), so that a pipe end portion can be gripped between them. The element may have pipe gripping ribs which get less aggressive rearwardly, since the element is expandable by a mandrel (45) that leads to the greatest expansion at the rear.
Claims16
An end fitting for a tubular element having:
- a threaded elongate element,
- a tubular body having a front portion with a bore through which the elongate element extends and a rear portion defining a skirt;
- an expandable element which, in use, is located around the elongate element and at least partly radially within the skirt, said expandable element being tubular having a tube body which is divided into a multiplicity of separate body pieces by slots extending the full axial length of the tube body;
- and
- an expansion mandrel having a threaded bore engageable by the thread of the elongate element so that, in use, the mandrel can be drawn forwardly to urge expansion of the expandable element by relative rotation of the elongate element.
2 more elements
Dependencies are inferred from the claim text.