Implements or apparatus for applying pushing or pulling force – Step-by-step traveling bar – Clutch actuated
Patent
1978-04-24
1981-07-07
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Step-by-step traveling bar
Clutch actuated
B66F 100
Patent
active
042770513
ABSTRACT:
Method and apparatus for elevating a prefabricated, off-shore, well-drilling or other platform. The platform is elevated by jacking units on the platform having legs suspended from a superstructure on the support. At least one pair of preassembled jacking units is mounted upon the platform at each caisson well. A superstructure is premounted on the upper end of each caisson. A set of self-energizing "fail safe" slips is mounted in the superstructure near each of its ends. Each jacking unit includes a tubular jacking leg. Means are provided for positioning each jacking leg so as to positively lock its upper end in the slips in the superstructure after berthing. Each jacking unit also includes a jacking mechanism comprising two slip holders, each containing a set of self-energizing, "fail safe" slips surrounding the jacking leg. Lifting rods associated with slip holder housings are pivotally connected at their lower end to the platform. Each jacking unit also has a cylinder and piston on opposite sides of the jacking leg. Elastomeric members mounting the piston and cylinder assemblies in the slip holder housings yield to relieve stresses and provide uniform load distribution. The pistons and cylinders are operable to cause the slips to incrementally raise the platform on the suspended jacking legs and to hold it in its raised position. The slips also function automatically to hold the platform on the support in any position to which it is raised by wave action, thereby at all times preventing the platform from dropping back onto the water.
REFERENCES:
patent: 1211115 (1966-02-01), Dowty
patent: 2932486 (1960-04-01), Suderow
patent: 2944403 (1960-07-01), Smith
patent: 3290007 (1966-12-01), Yeilding
patent: 3335642 (1967-08-01), Rosaen
patent: 3347049 (1967-10-01), Faltersock et al.
patent: 3416284 (1968-12-01), Adler
patent: 3565400 (1971-02-01), Yamura
patent: 3604683 (1971-09-01), Sutton
patent: 3628336 (1971-12-01), Moore
Glemser Harry W. F.
Marine Engineering Company, C. A.
Watson Robert C.
LandOfFree
Tilt-up/jack-up off-shore drilling apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tilt-up/jack-up off-shore drilling apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tilt-up/jack-up off-shore drilling apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-189681