Jack-up apparatus for marine-based platforms

Hydraulic and earth engineering – Marine structure or fabrication thereof – With work deck vertically adjustable relative to floor

Reexamination Certificate

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Details

C405S195100, C405S196000, C254S095000, C254S105000

Reexamination Certificate

active

06981822

ABSTRACT:
In a jacking system for a marine platform, a plurality of hydraulic continuous linear motion motors are engageable with a plurality of marine platform supporting logs to provide relative motion between the platform and its supporting legs, and to also maintain the platform and its supporting legs locked in a stationary relationship. In the jacking system, the number of hydraulic piston/cylinder units and the number and design of the teeth that are engaged in providing relative motion may be selected to substantially reduce material stresses on the system.

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