Sacrificial stinger impact absorber

Details Sacrificial stinger impact absorber Sacrificial stinger impact absorber

2006-07-12

2011-11-08

Kreck, John (Department: 3672)

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

C405S168200, C188S371000, C188S376000

Reexamination Certificate

active

08052350

ABSTRACT:
A marine pipelaying vessel with a pipeline stinger connected to said vessel, preferably pivotable, and forming a downwardly directed support for pipeline to be laid. The vessel further includes a stinger suspension assembly between the stinger and the vessel from which the stinger is suspended at least during operation, preferably the stinger suspension assembly allowing to lower and raise said stinger. The stinger suspension assembly includes a sacrificial stinger impact absorber which is adapted to absorb impact energy resulting from a violent stinger motion, e.g. induced by a freak wave. Preferably, the impact absorber forms an elongatable structure, e.g. a telescopic structure, which is elongated under impact energy absorption.

REFERENCES:
patent: 3736760 (1973-06-01), Carstens et al.
patent: 4236695 (1980-12-01), Morrison
patent: 6488434 (2002-12-01), Graeff
patent: 2005/0087731 (2005-04-01), Scott
patent: 1 063 163 (2000-12-01), None
patent: 8 802 461 (1990-05-01), None
patent: WO-2005/123566 (2005-12-01), None

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