Bend stiffener

Details Bend stiffener Bend stiffener

2005-09-19

2009-08-04

Mayo-Pinnock, Tara (Department: 3671)

Hydraulic and earth engineering

Marine structure or fabrication thereof

Structure protection

C166S367000, C138S106000

Reexamination Certificate

active

07568861

ABSTRACT:
A bend stiffener to surround an end portion of an elongated, essentially cylindrical object, e.g. a flexible pipe or a cable, extending from a subsea installation to a surface vessel, and is connected to an end piece or end flange of the object at a connection to the vessel. A plurality of spaced apart clamp sets, each set has inner, essentially cylindrical clamp surrounding the object and semi-circular longitudinal grooves for receiving spring rods in an outer surface thereof, and outer clamp which in inner surface thereof has longitudinal semi-circular grooves for receiving the spring rods. The spring rods are secured in the end piece or the end flange or an adapted arrangement on the object. Each outer clamp is secured to the respective inner clamp and locks the spring rods relative to the inner clamp and the object.

REFERENCES:
patent: 3252192 (1966-05-01), Smith
patent: 4363567 (1982-12-01), Van der Graaf
patent: 4635970 (1987-01-01), Haines
patent: 5161828 (1992-11-01), Hynes et al.
patent: 5439323 (1995-08-01), Nance
patent: 6561714 (2003-05-01), Williams et al.
patent: 2 291 686 (1996-01-01), None
patent: 98/41729 (1998-09-01), None

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