Mobile offshore, self-elevating (jack-up) unit leg/hull rigidification system

Patent · Tue Feb 02 04:00:00 EST 1988

OSTI ID:7104925

Goldman, J L; Michael, W H; Breeden, J O.R.

A jack-up rig unit for offshore use is described comprising: at least one leg with a set of rack teeth fixedly connected thereto and disposed at least generally in a vertical direction along at least a substantial portion of the leg length; a floatable hull supportable above the water line on the leg(s); rack chock means carried by the hull for each of the leg(s) for rigidly locking the leg(s) to the hull for rigidification of the hull and leg(s) together without introducing any substantial bending movements in the leg(s), the rack chock means including as a part thereof laterally movable teeth engaging means for rigidly interdigitating with in locking, mating engagement the rack teeth of its respective leg in it rigidification disposition but laterally movable with respect to the rack teeth out of any engagement with the rack teeth when it is desired to jack the leg(s) up and down.

• Assignee: Friede and Goldman, Ltd., New Orleans, LA
• Patent Number(s): US RE 32589
• OSTI ID: 7104925
• Country of Publication: United States
• Language: English

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DESIGN
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