Hydraulic and earth engineering – Marine structure or fabrication thereof – With work deck vertically adjustable relative to floor
Reexamination Certificate
2006-05-02
2006-05-02
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Marine structure or fabrication thereof
With work deck vertically adjustable relative to floor
C405S196000, C405S223100, C114S264000, C114S265000
Reexamination Certificate
active
07037044
ABSTRACT:
An extendable draft platform, having a deck and buoyancy columns installed in leg wells in the deck for vertical movement from a raised position to a submerged position, includes a connection arrangement for securing the columns to the deck when the columns are in the submerged position. In the connection arrangement, a plurality of first guide elements near the top of each column is engageable by a plurality of complementary second guide elements secured to the deck around each leg well when the column is lowered to its submerged position. A locking mechanism is operable between the columns and the deck when the first guide elements are engaged with the second guide elements. The first and second guide elements may be configured so that the connection between the deck and the columns may be enhanced by over-ballasting the columns and/or by welding the columns to the deck.
REFERENCES:
patent: 3118283 (1964-01-01), True et al.
patent: 3605669 (1971-09-01), Yu
patent: 4735526 (1988-04-01), Kawagoe et al.
patent: 6024040 (2000-02-01), Thomas
patent: 6718901 (2004-04-01), Abbott et al.
Abbott Phillip Andrew
Xu Qi
Klein Howard J.
Klein O'Neill & Singh, LLP
Lagman Frederick L.
Technip France
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