Keel joint centralizer

Details Keel joint centralizer Keel joint centralizer

2006-03-21

2006-03-21

Avila, Stephen (Department: 3617)

Ships

Floating platform

C441S003000

Reexamination Certificate

active

07013824

ABSTRACT:
A riser centralizer for transferring lateral loads from the riser to a platform hull includes a keel centralizer mounted on a keel joint. The keel centralizer is received within a keel guide sleeve secured in a support mounted at the lower end of the platform hull. The keel centralizer includes a nonmetallic composite bearing ring having a radiused peripheral profile for minimizing contact stresses between the keel centralizer and the keel guide sleeve in extremes of riser and platform motion. The internal surface of the keel guide sleeve is clad with a corrosion resistant alloy and coated with a wear resistant ceramic rich coating.

REFERENCES:
patent: 2045030 (1936-06-01), Thompson
patent: 2212366 (1940-08-01), Donaldson
patent: 5873677 (1999-02-01), Davies et al.
patent: 5950737 (1999-09-01), Chou et al.
patent: 6283205 (2001-09-01), Cannon
patent: 6422791 (2002-07-01), Pallini et al.
patent: 6536527 (2003-03-01), Munk et al.
patent: 2001/0026845 (2001-10-01), Knight et al.

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