Ships – Floating platform
Reexamination Certificate
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:
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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.
Jordan Travis R.
Otten Jeffrey D.
Trent David
Avila Stephen
Nichols Jr. Nick A.
Seahorse Equipment Corporation
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