Offshore platforms

Details Offshore platforms Offshore platforms

1975-12-08

1978-05-23

Gilliam, Paul R.

Boring or penetrating the earth

Below-ground impact members

With releasable means to detachably retain telescoping...

61 63, 175 85, E02B 1700

Patent

active

040903680

ABSTRACT:
An offshore platform including a deck with an aperture formed through it and a number of clamping means carried by the deck. The clamping means, which may comprise opposed doors, are mounted so as to be selectively movable between a retracted position, to leave the aperture freely open, and an extended position in which the clamping means extend into the aperture. The arrangement is to facilitate lowering and recovering heavy equipment such as a BOP stack.

REFERENCES:
patent: 2831448 (1958-04-01), Suderow
patent: 2848722 (1958-08-01), Choporis
patent: 2910834 (1959-11-01), Knaff
patent: 3189093 (1965-06-01), Devries
patent: 3528497 (1970-09-01), Lehman
patent: 3653354 (1972-04-01), Panaglia
patent: 3802209 (1974-04-01), Weaver
patent: 3902554 (1975-09-01), Hooper

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