Self-regulating jacking system

Details Self-regulating jacking system Self-regulating jacking system

2007-03-06

2007-03-06

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With work deck vertically adjustable relative to floor

C405S196000

Reexamination Certificate

active

11228573

ABSTRACT:
The invention relates to mobile offshore jack-up structures and provides for a self-regulating jacking system for elevating and lowering of the legs and the hull. A central controller assembly regulates movement of each of the legs, depending on the relative speed of movement of each leg and inclination of the hull along two independent axes: forward-aft and starboard-port. Each chord of the supporting legs is inverter driven to ensure a bi-directional full rated torque control of the associated pinion assemblies at very low speeds. By regulating the relative speed of the leg vertical movement, the system monitors the hull inclination within allowable limits and prevents an excessive differential vertical travel of any of the leg chords, thereby minimizing a possibility of leg bending or jamming of the screw jacks of the jacking assemblies30.

REFERENCES:
patent: 4269543 (1981-05-01), Goldman et al.
patent: 4657438 (1987-04-01), Gillis
patent: 4885698 (1989-12-01), Kawasaki
patent: 5975805 (1999-11-01), Morvan et al.

Affiliated with

Also associated with

Rating

Self-regulating jacking system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-regulating jacking system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-regulating jacking system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3746672